Best Supplements for Increased 25-hydroxyvitamin D Level
Ranked by research evidence. Compare 3 supplements across 17 papers from the biomedical literature, with effect direction, evidence strength, and dose range for each.
Top picks by evidence
- High evidence14 studies
Across 14 studies, 12 reported beneficial effects of vitamin D supplementation on increasing 25-hydroxyvitamin D levels, with effect sizes ranging from small to large (most commonly small to moderate). The predominant evidence comes from randomized controlled trials and meta-analyses in clinical populations (e.g., older adults, people with HIV, children), with a median study duration of 90 days. Doses varied widely but commonly ranged from 400 to 4000 IU/day, with some studies using higher weekly or single-dose regimens.
Dose: 400–4000 IU/dayProduct matchViva Naturals — Vitamin D3 with Organic Liquid Coconut Oil125 mcg · $15.16 · ★5.0 (208)
3 supplements
- HighVitamin DAcross 14 studies, 12 reported beneficial effects of vitamin D supplementation on increasing 25-hydroxyvitamin D levels, with effect sizes ranging from small to large (most commonly small to moderate). The predominant evidence comes from randomized controlled trials and meta-analyses in clinical populations (e.g., older adults, people with HIV, children), with a median study duration of 90 days. Doses varied widely but commonly ranged from 400 to 4000 IU/day, with some studies using higher weekly or single-dose regimens. · Dose: 400–4000 IU/day12 beneficial2 neutral14 studies