Best Time to Take Vitamin D: Morning or Night?
Morning, evening or night does not matter: no study has found a best time, so take vitamin D when you will remember it every day. Taking it with a meal that has some fat helps; in one study, blood levels peaked 32% higher.
By Erin Rose Updated October 20, 2026 How we score
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One small softgel a day, on NSF/ANSI 173, 360 softgels for $14.44. 2,000 IU covers most adults and stays under the 4,000 IU daily limit.
NatureWise D3 2000 IU
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Morning or night?
Either. We searched for trials that compared morning and evening doses and found none. What matters is taking it every day, so tie it to a meal you never skip.
With food or on an empty stomach?
With food that has some fat. Vitamin D dissolves in fat. In 50 older adults given one large dose, blood vitamin D peaked 32% higher with a meal that had fat than with a fat-free meal (Dawson-Hughes 2015). In a monthly-dose study, blood levels at 30 and 90 days were the same with or without a meal (Dawson-Hughes 2013), and the body absorbs some vitamin D without fat (Silva 2018). So a meal helps, but you do not need one.
Softgel or tablet?
In a 4-week trial, a daily dose in a fish-oil capsule and the same dose in a multivitamin tablet raised blood levels about the same (Holvik 2007). Pick the form you will take.
Daily is the safe way
Take a normal dose each day rather than a big one now and then: 500,000 IU once a year raised falls and fractures in women 70 and older (Sanders 2010). How much to take: the dosage guide.
Questions people ask
Does vitamin D at night affect sleep?
No trial in healthy people has shown that an evening dose harms sleep. If you think it does, take it with breakfast instead.
Sources
- Dawson-Hughes B, et al. “Dietary fat increases vitamin D-3 absorption.” J Acad Nutr Diet. 2015. PubMed 25441954
- Dawson-Hughes B, et al. “Meal conditions affect the absorption of supplemental vitamin D3 but not the plasma 25-hydroxyvitamin D response to supplementation.” J Bone Miner Res. 2013. PubMed 23427007
- Silva MC, Furlanetto TW. “Intestinal absorption of vitamin D: a systematic review.” Nutr Rev. 2018. PubMed 29025082
- Holvik K, et al. “A randomised comparison of increase in serum 25-hydroxyvitamin D concentration after 4 weeks of daily oral intake of 10 microg cholecalciferol from multivitamin tablets or fish oil capsules in healthy young adults.” Br J Nutr. 2007. PubMed 17456248
- Sanders KM, et al. “Annual high-dose oral vitamin D and falls and fractures in older women: a randomized controlled trial.” JAMA. 2010. PubMed 20460620