Best Supplements for Increased 25-hydroxyvitamin D Level
Ranked by research evidence. Compare 3 supplements across 7 papers from the biomedical literature, with effect direction, evidence strength, and dose range for each.
Top picks by evidence
- High evidence5 studies
Across all 5 studies, 5 reported beneficial effects on increased 25-hydroxyvitamin D levels, all statistically significant. The predominant effect size is moderate, with one study reporting a large effect. The median study duration was 90 days, indicating effects are typically observed at 8-12 weeks. The most-studied populations include older adults, healthy children, and clinical populations (Parkinson's disease, lupus, multiple sclerosis).
Dose: 1000-7000 IU/day (weekly dosing up to 100,000 IU used in one high-dose study)Product matchViva Naturals — Vitamin D3 with Organic Liquid Coconut Oil125 mcg · $15.16 · ★5.0 (208)
3 supplements
- HighVitamin DAcross all 5 studies, 5 reported beneficial effects on increased 25-hydroxyvitamin D levels, all statistically significant. The predominant effect size is moderate, with one study reporting a large effect. The median study duration was 90 days, indicating effects are typically observed at 8-12 weeks. The most-studied populations include older adults, healthy children, and clinical populations (Parkinson's disease, lupus, multiple sclerosis). · Dose: 1000-7000 IU/day (weekly dosing up to 100,000 IU used in one high-dose study)5 beneficial5 studies