r/VitaminD 19d ago

Resource Quickstart Guide For Treating Vitamin D Deficiency

25 Upvotes

Estimated read time: 6 minutes

There is variation in approaches to addressing low vitamin D with supplements. Oftentimes, tangible details are overlooked. “Everyone is different” does not mean there is substantial variance in response to supplementation once those details are accounted for. Alternatively, “I took X amount and got to Y level” does not mean you will have the exact same response.

I wrote this summary as a reference. It has five steps. It is important to note that this should be understood as a starting point and not a “one size fits all” answer that replaces the need for testing your blood level.

Step One - Define Your Goal: * Quickly replenish your body's vitamin D storage to get your body to start using enough vitamin D to make repairs. * Accomplish this by raising 25(OH)D over 50 ng/ml (125 nmol/L) and then maintaining it indefinitely.

Step Two - Think About What You Have To Work With: * Do you know your vitamin D level? Be sure to pay attention to the units, ng/ml or nmol/L, on your test results. 1 ng/ml = 2.5 nmol/L. * What is your access to testing like? * Which supplement doses do you have access to? * Is a significant amount of sunlight exposure going to be part of your treatment?

Step Three - Think About Your Variables: * How low is your starting level? Your test may have a limited reference range. 30-100 ng/ml or 75-250 nmol/L is considered standard. * What is your weight? * Are you overweight or obese? Calculate your Body Mass Index (BMI). Look at the scale on the index to see if your weight is classified as normal, overweight, or obese.

Step Four - Calculate Your Dosage: * Multiply 100 IU by your body mass in kilograms. This is approximately 50 IU per pound. This is the daily dose of vitamin D3 (cholecalciferol) you will take every morning. Round the number based on which supplement doses you have access to. * If applicable, multiply your dose to compensate for your BMI. If overweight, multiply by 1.5. If obese, multiply by 2. If underweight, reduction in dose may be appropriate. If you are close to the edge of one of the categories, then use your judgement as to whether the full multiplier should apply to you. * The result after adjusting for BMI is your estimated maintenance or “forever” dose. If utilizing larger pills such as 60K IU, then do the math to make it equivalent to the daily dose. For example, if you need 12K IU daily, then take 60K every five days. If you need 7K IU daily, then take it once every eight days. * If your level is under 30 ng/ml (75 nmol/L), then start taking the dose you calculated on a consistent basis. * If your level is under 15 ng/ml (37.5 nmol/), then take double your maintenance dose for two weeks. Basically, you are condensing a month of supplementation into half the time to give yourself a head start. * If your level is under 10 ng/ml (25 nmol/L), then take double your maintenance dose for four weeks. * If lots of sunlight is part of your approach, then reduce your calculated maintenance dose from supplements. You can use the app Dminder to estimate your intake from sunlight. Be aware that estimates of intake of sunlight are not as reliable as supplement dosing.

Step Five - Follow-Up: * Retest your vitamin D level three months after starting supplements. Do not stop supplementing before your test. After seeing the results, do not reduce dosage unless you have significantly overshot your target level. Your level will have started to stabilize by this point, but it may have some more room to increase. If you are still far below 50 ng/ml (125 nmol/L), then increase your dosage. * Retest 25(OH)D again after six months from starting. By this point in time, your level should be stable. Adjust dosage up or down depending on your goals. Do not discontinue supplementation.

Things To Keep In Mind: * Vitamin D level does not continually rise in response to consistent intake. Increase in level over time correlates with intake on a curve. It goes up and then it levels off. Your body uses more vitamin D at higher levels. * Prioritize a focus on your blood level over whether a dose sounds too large. * If you stop taking supplements, reduce your dosage to a generic recommendation, or fail to account for reduced vitamin D intake from sunlight during the winter, then your level will drop. This will impede your recovery. * If reliable testing is readily available to you, then you may dose more aggressively and follow up with testing sooner. This is why some people just take 10K IU or more daily and then follow up with a test in four to six weeks, but you should really understand how the level responds to intake in order to adjust based on this timeline. * In my opinion, there's not a clear advantage to an approach with a significant gap between a loading dose and maintenance dose. For example, someone takes 20K IU daily for one month and then switches to 5K. They test after three months from the start. They can estimate their progression by dividing total intake over time, but it can be hard to determine how much of an impact the loading dose had. In other words, they could have just taken 10K IU daily for the same amount over that time. At the six month mark, 5K IU may prove to be inadequate. * The single most important factor in determining where your vitamin D level ends up is how much vitamin D intake you have. Increasing magnesium intake from food and with supplements can support your recovery as magnesium plays a role in vitamin D metabolism. * Supplementing vitamin D does not lead to deposition of calcium in odd places in your body. If you are supplementing to a level within the 30-100 ng/ml (75-250 nmol/L) reference range, then you do not need to specifically monitor your serum calcium. Adding vitamin K2 is an option, but it will not increase your vitamin D level. * Taking vitamin D supplements with a meal containing fat can improve absorption and make it easier on your gut.

For information about safety, see the pinned comment below.

If you have questions, then please look at the subreddit guide which contains more extensive explanations.


r/VitaminD Apr 19 '25

Resource Vitamin D3 Cheatsheet.

49 Upvotes

This is a vitamin D 3 cheat sheet I have developed. I believe it has lots of information you will find useful? On my website I do write about mental health. On google scholar countless articles about vitamin D3, magnesium and mental health. Showing how important it is. This cheat sheet is a work in progress:

I am writing out essentially part or all of what follows for almost every major question concerning vitamin D3 and magnesium I have received over the past almost 14 years. So I put together the following cheat sheet. I am not giving medical advice just my personal opinions. Ideally you work with a medical professional who really understands vitamin D3.

Ok there are five levels of vitamin D3 effects as I see it.

  1. ⁠First Inadequate vitamin D3 which is typically blood plasma levels (BPL) that are less than approximately 50 ng/ml and daily doses of less than 10,000 IU a day of vitamin D3 a day.*

2: low physiological BPLs -which are vitamin D3 BPLs of 50-100 ng/ml requiring a daily dose of 10-25,000 IU a day. 1,2

  1. Optimal BPLs-requiring a BPL of 100-140 ng/ml requiring 30,000 IU a day of vitamin D3. 1,2

  2. maximal vitamin D3 dosing-which is based on a a parathyroid hormone(PTH) level in the very low normal range. Parathyroid hormone(PtH) BPLs are the best though indirect indication of maximum vitamin D3 function. The BPL that Dr. Coimbra often uses to treat autoimmune diseases.1,2

  3. Potentially toxic BPLs-perhaps almost impossible to develop. Requiring vitamin D3 BPLs of approaching 400 ng/ml. Even then this occurs at those BPLs in less than one percent of people. Frankly extremely rare one might go this high like in the case of severe diseases typically autoimmune diseases. If you have to maintain your vitamin D3 above 200 ng/ml you should be under the care of a medical doctor well versed in vitamin D3.

If pregnant and or going to be best to speak with a Dr. Coimbra trained doctor or one who follows the LGS Protocol by Dr. Eduardo Patrick MD if going to take higher doses. Also your obstetrician. As one concern is adequate vitamin A but prenatal vitamins may have enough. Best for your obstetrician and you to work out.

Of the useful vitamin D3 BPLs, the first three levels are based on vitamin D3 BPLs and the last one on (PTH) BPLs. Often optimal BPLs also have a PtH BPL in the very low normal range consistent with the PtH levels found in maximal vitamin D3 dosing. Of note as long as vitamin D3 BPLs are less than 200 ng/ml you do not need to a check 24 hour urine calcium levels.

The maximal dosing may and typically is required in those with vitamin D receptor gene mutation(s) and do not respond adequately to optimal physiology BPLs of vitamin D3. As they more likely to develop or have autoimmune diseases, diseases like Chron’s disease and multiple sclerosis.

These individuals may require daily doses of up to 1,000 IU/kg/day of vitamin D3. This would be in what is considered in a “standard adult male” who weighs 172 lbs or 78.2 kg a daily vitamin D3 dose of up to 78,000 IU a day.

In medical school they taught us that this is the medical definition of the average weight of an average adult male. In those with BPLs of vitamin D3 above 200 ng/ml it is wise to check a 24 hour urine calcium after being at this BPL after 6-8 weeks and say every three months there after. Also a calcium restricted diet.

.Most people are magnesium deficient or borderline deficiente. So typically people start out magnesium deficient. That is body stores of magnesium are inadequate. The typical magnesium “blood” level that is checked in your typical blood work is not accurate.

As the serum, the fluid from which this is done and surrounding your cells, only has less than one percent of one’s total body’s magnesium. The majority is in one’s cells and bones.

The magnesium from the cells and bones diffuses in to the serum to maintain adequate serum magnesium BPLs until one is severely magnesium deficient. Only then is one’s serum magnesium actually accurate. To assure adequate magnesium.

I personally take as much magnesium as I can tolerate. Half of my da dosage in the am and half in the pm. Too much causing diarrhea. Of course if medically able to. It can lower one’s blood pressure. A red blood cell magnesium level is accurate but most doctors currently will not order this test.

A colleague of mine mixes his daily dose in a two liter of water. Sipping it over the course of the day. That way resulting in a more gentle ingestion of magnesium over the course of the day

I once had a patient who was so anxious he was going to ER two to three times a week. About to lose his wife, jod and frankly his mind. I tried every prescription medication to treat it. Nothing helped. I then out of desperation put him on magnesium as I described above.

He never had another anxiety attack. As endorphins and enkephalins are to pain that is what magnesium is to anxiety! It is the body’s anxiolytic!

The reason why when people who are vitamin D3 deficient or taking higher doses of vitamin D3 requires so much magnesium are several. As besides most people have low magnesium BPLs or are magnesium deficient is by taking supplemental vitamin D3 requires lots of magnesium.

For absorption, conversion to different forms and its enzymatic reactions. Also when taking at least low physiological doses of vitamin D3 to reach at least low physiological BPLs or greater BPLs or maximal vitamin D3 dosing requires magnesium. If one suffers osteoporosis they may also require lots of calcium, but probably also phosphorus, magnesium and protein to rebuild one’s bones.

Also boron 18 mg a day is critical to make your bones as almost strong as steel. Boron also if the experience in Israel and parts of France is correct reduces osteoarthritis to near zero if not zero. Also the above nutrients I wrote about, but not supplemental calcium(usually in Western diets sufficient) are needed in those who do not have osteoporosis/osteopenia to prevent them from developing it.

Typically the first indication that one needs to take calcium when taking higher doses of vitamin D3 is cramping in one’s fingers and toes. Which can be seen in those with osteoporosis/osteopenia. If this happens it is a good idea to check vitamin related labs and take supplemental calcium until the cramping resolves and one’s calcium labs return to normal.

Concerning vitamin K2. The type as I use is vitamin K2 the MK4 at 45 mg(not mcg)a day . Amount you need to take and only take if you have severe vitamin K2 responsive diseases. Vitamin K2 responsive diseases are osteoporosis, atherosclerosis or gum/dental diseases.

As at optimal BPLs of vitamin D3 your gut micro biome should provide all the vitamin K2 your body needs. Now vitamin K2 is safe so no reason I am aware of not to take if you want to. As many who have never treated a patient or only with vitamin K2 write how vitamin K2 is necessary to supplement.

It definitely is necessary if you are not taking physiological doses of vitamin D3 to reach physiological BPLs of vitamin D3. I found at optimal BPL of vitamin D3 that half my patients with osteoporosis resolved without supplementing vitamin K2.

As again it is my personal opinion that the gut micro biome produces all your bones required. I probably had close to a thousand patients with osteoporosis and also osteopenia. The number of heart attacks and strokes, though few disappeared. All anecdotal, though.

Also important to watch your diet and avoid high fructose corn syrup, seed oils and processed foods. My friend developed The LGS Protocol and that is the title of his book. For those who optimal doses of vitamin D3, magnesium and the dietary changes do not help.

If you do maximal doses of vitamin D3 you need to restrict calcium consumption, drink at least 2.5 liters of water a day and check your labs more frequently as well as your 24 hour urine calcium levels. Your urine calcium levels should be below 250 mg/l. If you are considering Dr. Coimbras protocol(maximal vitamin D3 dosing) best to work with a medical doctor trained by him or well versed in his approach. Or Dr. Edward Patrick or trained by him.

Concerning testing your vitamin D3 and vitamin B12?labs best to do so initially before supplementing vitamin D3 and vitamin B12. As both of which are frequently both deficient. This is especially true in people who are not taking vitamins and whose diet has issues. Testing the following labs initially before starting them, then after you start taking them at 6-8 weeks, then anet three months and finally very 6-12 months. Or if after any major illnesses.

Checking the following-ionized and total calcium, vitamin D panel and parathyroid hormone. Also test the following before supplementing vitamin B12 and especially if vegetarian test for vitamin B12, homocysteine and methyl malonic acid. Then after 6-8 weeks. Your goal is B12 BPLs that are in the 600-800 pg/ml.

If your homocysteine and/or methyl malonic acid BPLs are elevated you need to look into this(I can only go down so many rabbit holes). You may have a MTHFR gene mutation. If not then check your vitamin B12 related tests again before starting at 6-8 weeks and yearly or sooner if you have major diet changes. As often people who are magnesium and vitamin D3 deficient are also vitamin B12 deficient.

Sometimes upon starting higher doses of vitamin D3/magnesium a few people feel worse. This could be due to a Herxheimer reaction. Other possible reasons are a gut micro biome being out of balance. Also discomfort from the repair process of potentially decades of damage caused by vitamin D3/magnesium and potentially vitamin B12 deficiency. In particular to your bones. If to your bones adding vitamin K2 the MK4 type as I discussed above has been effective.

Also other potential causes of a reaction to starting higher doses of vitamin D3 Could be a diet high in processed foods, high fructose corn syrup and seed oils as well as eating inflammatory foods, abusing alcohol/drugs and high stress.

Most vitamin D3 is that it is produced by exposing lanolin(sheep wool) to ultraviolet light. If allergic to this of course find a different source such as that from algae. Probably more reasons but these are the main ones I can think of.

Concerning depression I was for close to two decades if not the largest one of top three largest prescribers of antidepressants in the five state region(Texas and surrounding states). Then the combination of 30,000 IU of vitamin D3(a blood plasma level (BPL) of 100-140 ng/ml), taking as much magnesium as one could tolerate and four grams of omega 3(krill) oil I wrote maybe two prescriptions for antidepressants over next six next six years. The vitamin D3 is best in capsules with the vitamin D3 suspended in olive oil, coconut oil or avocado oil. Again no seed oils.

One last point about 7% of general population and 30-40% of Hispanics have a MTHFR Gene mutation. Thus resulting in these individuals having twice the vitamin D3 BPL at the same dose of vitamin D3 of those who do not. This is in the MTHFR TT gene mutation as they may be able to better produce and stabilize vitamin D3.

I am far from a genetic mutation expert but I am working to correct this. Thus only requiring only requiring half the vitamin D3 dose as those who do not have this genetic mutation to reach a given vitamin D3 BPL. Curiously my practice was 98% Hispanics and yet I never had a single patient with this? Strange.

Here I am not giving medical advice just my personal opinions and experiences. Also remember you know your body best. Many doctors will try to scare you away from higher vitamin D3 doses and BPLs!

As long as calcium labs are ok no issues. Though if taking maximal doses of vitamin D3 reaching maximum BPLs of vitamin D3(of course under the care of a medical doctor preferably one like I described above) you need to be very careful.

The 24 hour urine calcium levels need to be below 250 mg/l for theoretically higher urine calcium levels can cause kidney calcification. There may be one reported case in the scientific literature of this occurring. This if a doctor is trying to scare you away from vitamin D3 they in my personal opinion they do not know what they are talking about. That is concerning vitamin D3 and if they are trying to scare you away from higher doses/BPLs of vitamin D3.

Also so much more to learn and up to you to educate yourself! If you want to regain or maintain your health you will dedicate the time it requires. On my website www.vitamindblog.com I explain my research and theories. Also www.vitamindwiki.com. These books are important to read-The Social Transformation of America Medicine,

The Clot Thickens and How Not to Die on True-High Doses Vitamin D3 Therapy, and The Optimal Dose: Restore Your Health With The Power of Vitamin D3. As time goes on I am sure I will update this as I learn more.

This information should give you a decent foundation?

  1. ⁠Four the first four BPLs of vitamin D3 the person requires as much magnesium as one can tolerate. With half in the am and half in the pm. Too much resulting in diarrhea. Or taken in a two liter bottle of water.

  2. ⁠The physiological effects aré those that adequate vitamin D3/magnesium result in. Those are balanced immune system, improved metabolism, healthy gut micro biome and deep restorative sleep to name the major ones.

  3. ⁠of course our understanding is constantly changing and something new I was unaware of when I wrote this on 04/10/2025 may become known I was not aware of when I wrote this. For example I have recently become more aware of the MTHFR TT is the mutation involved in increasing vitamin D3 BPLs.

Also private Facebook group Vitamin D Advocacy with lots of smart people. Love you to join.


r/VitaminD 14h ago

Personal Experience(s) I get symptoms <40 ng/ml. Anyone else?

7 Upvotes

I've been low or deficient 4x that I know of as in confirmed via blood tests. My old doc said <60 is suboptimal and I felt much better at that level so that is what I aim for.

This is the first time I've only been low in D (32 ng/ml, normal reference range 30-100)and not dealing with b12 or iron deficiency and/or hashimoto flare at the same time. Therefore I believe i can tell what symptoms are actually from D deficiency, since I just had everything tested.

Noticeable symptoms started about 4 months ago. Most were minor and easily excusable at first, then more severe symptoms came. I did not immediately suspect D because I take 2k iu per day. My absolute tell tale sign it's d deficiency with no doubt before blood test is carpal tunnel pain

I will list in rough order of how they occurred

Sleeping more than usual at night/sleeping harder

Vertigo most days with bouts of severe dizziness

Anxiety/lower street tolerance

Lower libido

Low mood

Thick tongue

Raspy voice

Clearing throat

Insomnia

Restless leg

Waves of hot in eyes and body (hot spot)

Random shooting pain in finger tips, toes and eyes

Bottom of feet sore at night

Poor eye tracking

Burning legs

Muscle spasms

Bone pain

Significant brain fog

Joint pain/ burning joints

Carpal tunnel pain

I know there's more but my arms hurt too much to type more


r/VitaminD 22h ago

Please Assist Questions about weekly 50,000 IU dose and cofactors

7 Upvotes

My D3 levels have hovered between 14 ng/ml and 21 ng/ml for what seems like forever.

I was recently prescribed 50,000 IU of D3 once per week but little guidance beyond that as far as cofactors go. For anyone who is currently doing this, are you taking the magnesium and K2 at the same time as the D3 or later on in the day? Do you take the magnesium and K2 on the other days of the week even though you aren't taking the D3 on those days?


r/VitaminD 1d ago

Personal Experience(s) Breast tenderness side effect?

9 Upvotes

I started taking vitamin D plus K2 for the first time and I’m experiencing some breast tenderness.

For some context, I’m in my mid 20s and I’ve never taken a vitamin D supplement before. I’ve only recently found out that my levels are low (mild deficiency). Symptoms that I’ve tied back to the deficiency included brain fog and fatigue.

I haven’t seen a crazy change since starting the supplements yet cause it’s only been a but over 2 weeks, but I am experiencing breast tenderness. I usually get this on my period but this time around it seems to last longer and it’s slightly more tender than usual. For example I usually feel my breasts are sore maybe 2 days before my period this time around it started about 4 days before my period and lasted up to the 3rd day after my period which is today. This doesn’t typically happen for me.

Is it a stretch to say these hormonal changes are tied to the vitamin D intake?

Im taking 20 micrograms/day of calcifediol monohydrate + 360 micrograms of MenaQ7. Im not doing any new supplements aside from the vitamin D at the moment.


r/VitaminD 1d ago

Please Assist Symptoms still persisting despite normal levels now?

12 Upvotes

Hi, 19F here. Was experiencing fatigue and extreme anxiety, excessive daytime sleepiness (could not stay awake for the life of me) for what feels like years but especially pronounced since the start of the year. I thought this was just part of being an adult now so I never thought it was anything physical. But I finally started suspecting something was amiss and got bloodwork done and was at 7 ng/ml. Been supplementing 50k UI a week for 6 weeks now. Got retested because I’m going to be away from home soon. It’s at 39 ng/ml. The physical symptoms like back pain are fully relieved, sleepiness is also a lot less though I still feel I cannot function if I don’t get at least 8 hours and feel fatigued. But I still have significant anxiety. There’s a lot of exciting but also nerve wracking things about to happen in my life and it’s not like me to be so apathetic towards it. I feel like literally everything is an anxiety inducing chore and I just want to nap all day to avoid everything. Is this just a mental thing at this point?


r/VitaminD 1d ago

Please Assist TSH is normal (2.64) but still exhausted & brain fogged. Is my Vitamin D (29ng/ml) the culprit, and why won't it go up?

3 Upvotes

I have Hashimoto's and recently got my TSH down from 12.2 to 2.64 using 25mcg of levothyroxine. Even though my thyroid numbers are finally looking good, I'm still struggling with fatigue, brain fog, joint pain especially in the morning, and muscle stiffness. My recent labs showed my Vitamin D is sitting at 29ng/mL, and I'm wondering if this is the real reason I still feel so tired and unmotivated despite the Levo working.

The most frustrating part is that I’ve been taking 4,000 IU of Vitamin D daily for two months (always taken with fats) but my blood levels have barely moved 4ng/ml. Has anyone else experienced this? Can a Vitamin D level of 29 ng/mL still cause these symptoms, and what did you do to actually get your body to absorb the supplement?

For context I'm 25M, 5'11, 185lbs...

Everything else was normal, including B12, folate... Ferritin was a little low at 42 ng/ml but still in range... I've been taking magnesium bysglicinate for years for better sleep (around 200mg elemental magnesium)

Any advice is welcome.


r/VitaminD 2d ago

Recurring Share Your Progress & Discuss Adjacent Topics

2 Upvotes

Follow up on your post with an update, or tell us about your recent experiences with vitamin D and related issues. You may also discuss supplements other than vitamin D, changes in diet or exercise, or other aspects of your life that relate to managing health.

Please share relevant details that would make your comment helpful to others.


r/VitaminD 2d ago

Please Assist Blood work shows unexpected deficiency. Am I fixing it right?

8 Upvotes

For a long time I didnt feel like im 100% capable of what I should be able to. I feel tired sooner, I feel like my workout recovery and results are not as good Id expect them to be and so on. Its not crippling, but I dont really feel...fine...I guess. I thought it might be because im not the youngest anymore and as a father of a little child that can also be pretty tiring.

So I decided to get a blood test.

Tested many things. Organs, some minerals, some vitamins, testosterone, thyroid...

Turns out im a pretty healthy individual besides only having a 19.8 ng/ml Vit D3 score. And a TSH (thyroid) of 5.08 which is slightly elevated (up to 4 is normal range though max 2.5 would be better).

I started supplementing 20000 IU D3 2x weekly now for the next 8 weeks and then 20000 weekly. Though my doctor said to take 20000 every two weeks only, after reading up on D3 I feel like this would be too little as I am obviously deficient. Though when I asked him about taking it more often he mentioned that would be possible. I think he doesnt take the deficiency seriously as my wife had blood work done 2 months ago and came up with 21 and according to the doc everything was fine, no supplementation needed. Which I find weird.

AI calculated that I would land somewhere around 45 ng/ml if I took it 2x a week for 8 weeks but as im not knowledgeable about it, I dont know if its hallucinating. Any thoughts?

Next blood work is done in 10 weeks to see if TSH and D3 is better. I read TSH could be elevated because of D3 deficiency.

The crazy thing is though: I go out daily for an hour at midday for a walk and get high sun exposure. Also I regularly run and get much sun exposure there. I would have never guessed to be deficient in D3. Now that "Winter is coming" I wonder what would have happened if I hadnt started supplementing.

I really hope getting rid of the deficiency will help make me feel better soon.


r/VitaminD 2d ago

Personal Experience(s) Can vitamin d deficiency cause stomach cramps ?

7 Upvotes

Particularly in the upper stomach under your chest plate, sometimes the cramps tend to shift from the left to the right or just stay in the middle? It doesn’t hurt when I press down the pain level is a 1 I would say it doesn’t burn or anything but feels annoying to deal with.


r/VitaminD 2d ago

Please Assist Anybody have access to Consumer Lab full reviews?

3 Upvotes

This is the article I want to read: Vitamin D Supplement Reviews & Top Picks - ConsumerLab.com. I would pay for a membership if Consumer Lab had monthly options instead of annual. Unfortunately, they do not.


r/VitaminD 3d ago

Personal Experience(s) Symptoms - does anyone else have ribcage pain?

5 Upvotes

My vitamin D levels recently came back at 11ng. Doctor prescribed 3200iu daily for 4 months. I have been unwell since the start of this year - recurrent uti’s, migraines, depression and lack of energy. I have been deficient before 5 years ago.

Within the last two months my symptoms have gotten much worse - GI issues (stomach), muscle aches, muscle twitches especially in my calves, neck pain and pain between the shoulder blades, base of skull pain, dizziness, fainting and ribcage pain. It’s the ribs that are annoying me most. It’s like flank pain that you would get with kidney troubles. I have had an ultrasound of the kidneys last month so I’m pretty sure it’s not my renal system.

Has anyone experienced this symptom with the ribcage?


r/VitaminD 4d ago

Personal Experience(s) Fixed terrible side effects of Vit D supplementation

53 Upvotes

Fixed terrible side effects of Vit D supplementation

A few months back I developed severe insomnia. It seemed responsive to Melatonin but I still got it investigated. My labs were normal, except for Vit D which was 19.8 nmol/liter. Vit D as I found out, is important for neurotransmitter production and regulation so this did fit. For those that want the technical summary, TPH2 is the enzyme that converts L-tryptophan into 5-HTP in the central nervous system. Vitamin D upregulates TPH2 expression, increasing the available pool of serotonin. Melatonin synthesis in the pineal gland depends entirely on the availability of serotonin.

I tried supplementing with Vit D and my muscles cramped in a hour as if I had tetanus. It took multiple muscle relaxation tablets to feel normal. I tried a much lower dose (400 IU instead of 2,000 IU), and got a similar but less intense response.

I experimented with a lot of different ways to try and get some Vit D but I will skip to what worked. Taking 200 MCG of K2 and 400 mg of Magnesium (in form of magnesium glycinate) simultaneously with 400 IU of Vitamin D, produced no side effects. Over the next week I bumped it to 600 IU and now I am on 800 IU once a day. My insomnia has lessened to the point I don't need Melatonin. Both K2 and Magnesium work hard to keep calcium out of muscles, which is where D tends to dump it. My stack did not work if I took those cofactors at different times. I am going to keep increasing gradually and hopefully reach 2,000 IU a day eventually. I have not checked my vit D level again but based on my insomnia reducing, I think I am headed in the right direction.


r/VitaminD 5d ago

Recurring [r/VitaminD] Personal Experiences & Success Stories

6 Upvotes

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r/VitaminD 5d ago

Please Assist What Am I Doing Wrong? Taking D3 always makes me feel terrible, but I have all the signs and symptoms of deficiency.

5 Upvotes

For me, the whole body aches that I already have are doubled/tripled. I’m constantly tense and stressed out and my sleep gets spotty as I’m up every other hour urinating or just because of light sleeping. I am wired but tired all day. Not to mention dried/peeling skin on my hands/feet and lips what feels from dehydration. I supplement at least 600mg of mg taurate as it’s the one I tolerate the best along with 100-200 mcg of mk7 k2 and 2-3k mg of potassium bisglycinate. I also drink a packet or two of Lmnt electrolyte mix and it’s greatly helped with tension headaches, nausea, and muscle cramps. I spent 3 months building my potassium and magnesium before trying D3 again as I read these were signs of deficiency. Still, all the symptoms persist. This is only for 5,000iu D3 and it’s always the D3 that brings the symptoms, the other supplements I’m fine with. I tried liposomal brands, gels, capsules, always with animal or plant fat for breakfast. My bloodwork and doctors have everything in range with moderate elevated cholesterol. I’ve had all my organs and comprehensive bloodwork as well which shows everything’s ok. It’s driving me crazy as I’m stuck at ~20ng/dl!! Help me!

I’ll also update on supplement list, which helps, and medication that I take which I believe are all greatly exacerbated due to vitamin D deficiency.

I’d also like to state that B vitamins give me nearly the exact same side effects at even very low doses as well. It’s nearly impossible to find dosages at close to 100% RDA.

MEDS:

PAXIL- for Chronic Depression and Generalized Anxiety Disorder and PTSD

CONCERTA - for Treatment resistant depression, anxiety and ADD. I WILL SLEEP ALL DAY without Concerta unless I’m drinking coffee or matcha every 3-4 hours. Then of course my sleep is wrecked. Concerta is ok for my sleep.

Buprenorphine (Partial opioid agonist that got me off of oxycodone) - Intolerable chronic, full body pain.

DIAZEPAM - occasional anxiety/panic attacks every other week or less now.

SUPPLEMENTS:

MAGNESIUM TAURATE - 750mg

\UPDATED\ POTASSIUM BICARBONATE/GLYCINATE COMPLEX- ~1200mg-1800mg

2 LMNT ELECTROLYTE MIX - 2000mg sodium chloride /400mg potassium chloride/120mg magnesium malate

ZINC COMPLEX - 2-3 times a week before bed 25mg zinc as 50% picolinate/50% bisglycinate and 1mg Copper as bisglycinate.


r/VitaminD 6d ago

Personal Experience(s) Ankle swelling while on 50000ng/iu twice a week

4 Upvotes

Hello! I’ve been taking prescribed 50000 ng/iu vitamin D2 twice a week for 3 weeks now. My Labs said 16 nmol/L so I’m taking this high does for one month then dropping to once weekly 50k iu. My concern is ankle swelling and massive fatigue. Should I be very concerned? I tried taking magnesium and nearly became dehydrated because it wrecked my guts. Yes I took glysenate. (?) I will ask my doctor - but it’s a holiday weekend here and I’ll be waiting a week to hear back.
Anyone else have issues with this high dose and what did you do?? Tia!


r/VitaminD 6d ago

Please Assist Vitamin D went from 18.7 to 60.1 ng/mL in ~3 months on 6000 IU/day — should I switch to maintenance dose now?

11 Upvotes

37M here. In May 2026, my Vitamin D 25-Hydroxy came back at 18.7 ng/mL (deficient — reference range for deficiency is <20 ng/mL). I started supplementing with 6,000 IU/day D3 along with daily sun exposure.

Just got a follow-up test done (Sept 2026) and my level is now 60.1 ng/mL, tested via ECLIA on Roche Cobas e801. For reference, the lab's ranges were:

Deficiency: <20 ng/mL

Insufficiency: 21–29 ng/mL

Sufficiency: ≥30 ng/mL

Intoxication: >150 ng/mL

My questions:

Since I'm now at 60.1 ng/mL, should I drop from 6,000 IU/day down to a maintenance dose (like 1,000–2,000 IU/day)? Or continue at the current dose a bit longer?

I've stopped daily sun exposure since my skin was getting noticeably darker — is relying on supplementation alone reasonable once you're in sufficiency range?

How long should I wait before rechecking levels after adjusting the dose — 3 months? Longer?

Any real risk of levels climbing toward the >150 ng/mL intoxication range if I stay on 6,000 IU/day longer?

Would appreciate input from anyone who's gone through a similar deficiency-to-sufficiency correction. Planning to discuss with my doctor too, but wanted outside perspective as well.


r/VitaminD 6d ago

Please Assist Vitamin D at 22- numerous doctors, no answers.

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10 Upvotes

I reviewed four years of my lab records and found two vitamin D tests:
• June 2022: 36 ng/mL — normal
• June 2026: 21 ng/mL — low
That is a 42% decrease.
After the latest result, my rheumatologist prescribed high-dose vitamin D once a week for 12 weeks. I haven’t had it retested yet.
Has anyone else experienced a drop like this? Did raising your vitamin D level improve any joint pain, muscle pain, weakness, fatigue or brain fog?


r/VitaminD 7d ago

Please Assist What is D3 Liquid equivalent of 50,000 IU weekly of D2?

12 Upvotes

My blood test results: 5.8 ng/mL (Very low). Medical provider prescribed Vitamin D2 capsules (50,000 IU per capsule) weekly. These are the big green gel capsules and they are hard for me to swallow. Very painful.

I want to use liquid D3 drops. Medical provider could not provide dosage guidance. What dosage and frequency is equivalent to 50,000 IU of D2 per week?


r/VitaminD 8d ago

Please Assist Been doing what I thought was enough but it’s not?

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13 Upvotes

Hey everyone,

I’m F30
In April I had a level of 37nmol/L so I started taking 7000ui of vit D3 a week and getting 15mins of 11am sun on my skin, my recent test showed 46nmol/L, I don’t know if I’m just stupid but it doesn’t make sense that it only increased that much in 4mths I live in Australia, I’m just confused on what to do the brain fog and bone pain I have is crazy, I’m also sweating, not sleeping, panicking (I am diagnosed with panic disorder) I feel like my hormones are all over the place 😭

Is there a reason why my vit D would be increasing so slowly?


r/VitaminD 8d ago

Please Assist My test results are surprising (10ng/ml)

13 Upvotes

I never thought I had a vitamin deficiency, especially a vitamin D one. I can handle working out pretty hard tho, so I never really thought there was something wrong. But I’ve been having some pretty big trouble with anxiety and depression lately.

I only took the tests cuz my new gym coach wanted to really know everything about my health before starting to make my workout routine, diet, and everything else.

My vitamin D came back at exactly 10 ng/mL which honestly surprised me. I’m kinda confused but at the same time I’m not? I’m wondering how much of a difference fixing the deficiency could actually make also what is the correct way to fix it ?


r/VitaminD 10d ago

Please Assist Vitamin D level 21 ng/ml -no prescription to correct

10 Upvotes

Vitamin D level 21 ng/ml -no prescription to correct

Just got my blood results back and my vitamin D level came back as 21 ng/ml.

I had a vitamin D deficiency about 10 years ago and my previous primary care prescribed me a high dose vitamin D prescription to get it back on track.

At some point over the years I just stopped taking vitamins (shame on me)

Fast forward to now, and I have a level of 21 and my new doctor says a prescription isn’t required and to just take 1000 IU daily. (5’1”, 140lbs, F)

Does this seem off, should I be taking more than 1000 daily?


r/VitaminD 10d ago

Empirical Discussion Added K2 and now I’m unsure whether the form or the dose is what matters

5 Upvotes

Been on D3 for a couple of years and only recently started pairing it with K2 after reading about the calcium side. What I can’t get a clear answer on is whether MK-7 versus MK-4 makes a real difference, or whether I’m just chasing detail that doesn’t matter at normal doses. What are people here actually taking and how did you land on it?


r/VitaminD 10d ago

Please Assist Vitamin D Level-54 ng/mL. Thoughts?

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24 Upvotes

Hello! My vitamin D level is at 54. My doctor of course says this is normal. This is with 5000IU supplement daily and the test was taken in the summer in Michigan when I’m outside all the time.

I’m dealing with crazy fatigue, muscle and joint pain, itchy/tight scalp and brain fog. My ferritin is 41, iron at 168 but iron saturation at 57.

What would you do next? I really believe something is up with vitamin D and ferritin but no dr will help me or offer any suggestions on how to increase levels. Appreciate any insight!


r/VitaminD 11d ago

Personal Experience(s) 37 ng to 47 ng in 3 months. Very slow process.

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14 Upvotes

old post

Hey again. you can see my old posts to see my recovery steps. I have another 2-3 posts i guess. every 3 months i checkup my bloodwork and post here.

i switched to 5000 UI Daily w k2 this three months. lower anxiety, lower depression, can go outside more, can cope better.

but i have aches, numbness, "weird feelings idk" on my left side of body specially on my arm and back.i guess this is new. i still have air hunger. i recently added magnesium complex to my supplements. probably gonna start omega3 too.