r/VitaminD is a subreddit with 16k members. The most common kinds of discussions are advice requests and pain & anger, and the community frequently discusses vitamin d, deficiency, levels, symptoms, and supplementation, and they frequently recommend/review vitamin and sleeping pills.
Discussion of the sunshine vitamin, deficiency, and supplements. SEE RULES BEFORE POSTING.
Popular Themes in r/VitaminD
#1
Advice Requests
: "Vitamin D level came to 50 ng/ml from 3 ng/ml"
42 posts
#2
Pain & Anger
: "My Vitamin D Levels are at 3 and the symptoms are insane"
10 posts
#3
Solution Requests
: "Doctor prescribed 50,000 IU weekly D2 for low vitamin D (23 ng/mL) but I was planning daily D3 + K2 + magnesium. Which protocol makes more sense?"
1 post
#4
Ideas
: "Mushrooms: a food-based solution to vitamin D deficiency to include in dietary guidelines"
1 post
#5
Self-Promotion
: "I built an iPhone app that calculates how much vitamin D you produce from the sun every day: looking for people to test it"
1 post
Popular Topics in r/VitaminD
#1
Vitamin D
: "Vitamin D knocked me back into reality"
165 posts
#2
Deficiency
: "What’s a vitamin D Deficiency symptom that not that many people talk about?"
53 posts
#3
Levels
: "My Vitamin D Levels are at 3 and the symptoms are insane"
47 posts
#4
Symptoms
: "My Vitamin D Levels are at 3 and the Symptoms are insane"
39 posts
#5
Supplementation
: "Success with Supplementation and sunshine!"
28 posts
#6
Struggling
14 posts
#7
Magnesium
: "Not sure if I should lower Magnesium or increase it."
14 posts
#8
Supplements
: "I just started taking Supplements and now I keep nodding off all the time now"
12 posts
#9
Vitamin D Levels
: "I feel so goood!!! 50,000iu weekly prescription"
10 posts
#10
Low Levels
: "Healing process from vitamin D"
6 posts
Products Discussed in r/VitaminD
Vitamin
11 reviews
#1
Dr. Berg
4.0★ from 2 reviews
#2
Sports Research
5.0★ from 1 review
#3
Bestvite
5.0★ from 1 review
Sleeping Pills
1 review
#1
Melatonin
3.0★ from 1 review
Flair Used in r/VitaminD
#1
Please Assist
: "Doctor told me to stop taking vitamin D"
111 posts
#2
Personal Experience(s)
: "Vitamin d knocked me back into reality"
76 posts
#3
Success Story
: "6 months of consistency; I'm feeling much better"
6 posts
#4
Research
: "75% of people on earth have below 30 ng/mL???"
3 posts
#5
Resource
: "I built an iPhone app that calculates how much vitamin D you produce from the sun every day: looking for people to test it"
2 posts
#6
Empirical Discussion
: "Noticeable increase in water consumption due to higher D3 levels!"
2 posts
Member Growth in r/VitaminD
Yearly
+5k members(41.3%)
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About
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Last updated: June 9, 2026