Vitamin D reviews: what real users say
We read 3,058 first-hand mentions of Vitamin D from health and supplement communities. 1,101 of them say clearly how it went — and 67% of those say it helped.
Where people say it works: mood (88% of 393), energy (87% of 255), immunity (98% of 94), anxiety (64% of 90).
Most common complaints: insomnia, anxiety, hypercalcemia, nausea, irritability. All side effects →
Positive experiences
“First thing I noticed was my mood & libido, I have more 'feeling/sensitivity' down there.”
“Part of it was taking D3+K2 every day. After sticking to this regimen I have lost 30lbs in 5 months and felt great.”
“I take 10 to 15k ug a few times a week with k2...giving me a sex drive like I'm a teenager. I wake with woodys every morning...I definitely get an increase in energy and motivation.”
“Started with 50k IU twice per week for a month and then took 10k IU every day for a few month. Within a few weeks, my mental health had improved massively. Retested a few months later and my Vit D had gone up to 55.”
“Ever since adding JUST vitamin d in my diet... I am able to focus on things more easily... I feel more balanced as an individual overall.”
“supplementing ZMA, D3, creatine, sardines/DHA&EPA/other fatty fish works well for my health, sleep, and muscle gain.”
Negative and mixed experiences
“I'm able to take about 400 ius of Vitamin D per day. Anything beyond that, and I become very angry/rageful and feel mentally terrible.”
“I was taking 30,000 IU day sometimes...for the past 2 years, my sleep has basically been murdered.”
“I was deficient in vitamin D per a blood test. I started taking enough to get my levels to normal and didn't notice a difference.”
“The only tangible thing I ever found...is a vitamin d deficiency but even with supplementing...there was little to no improvement.”
“started getting what i can only describe as mania. Super elevated mood, abundance of energy.”
“She put me on a once-weekly 15,000 IU supplement for a month to boost my D3 levels and I could tell a difference immediately.”
Quotes are verbatim and link to the original public discussion. Information only — not medical advice. How we collect reports