Best Supplements for Improved Insulin Levels
Ranked by research evidence. Compare 66 supplements across 75 papers from the biomedical literature, with effect direction, evidence strength, and dose range for each.
Top picks by evidence
- Moderate evidence3 studies
Across all 3 studies, vitamin D supplementation showed beneficial effects on insulin levels, with moderate-sized effects observed in two studies and a small effect in one meta-analysis. The evidence includes a randomized controlled trial in 60 women with gestational diabetes mellitus (1000 IU/day for 42 days), which reported a significant reduction in serum insulin, and two meta-analyses in type 2 diabetes and MAFLD populations showing significant pooled reductions. Effects were typically observed at approximately 6 weeks of supplementation, though study durations were limited.
Dose: 1000 IU/dayProduct matchViva Naturals — Vitamin D3 with Organic Liquid Coconut Oil125 mcg · $15.16 · ★5.0 (208) - Low evidence3 studies
Across 3 studies, 1 reported a beneficial small effect of black cumin on insulin levels, while 2 meta-analyses found neutral effects. The predominant effect size across all studies was small. The median study duration was 56 days, and the only study reporting a dose used 2000 mg/day in overweight/obese women.
- ModerateVitamin DAcross all 3 studies, vitamin D supplementation showed beneficial effects on insulin levels, with moderate-sized effects observed in two studies and a small effect in one meta-analysis. The evidence includes a randomized controlled trial in 60 women with gestational diabetes mellitus (1000 IU/day for 42 days), which reported a significant reduction in serum insulin, and two meta-analyses in type 2 diabetes and MAFLD populations showing significant pooled reductions. Effects were typically observed at approximately 6 weeks of supplementation, though study durations were limited. · Dose: 1000 IU/day3 beneficial3 studies
- LowBlack CuminAcross 3 studies, 1 reported a beneficial small effect of black cumin on insulin levels, while 2 meta-analyses found neutral effects. The predominant effect size across all studies was small. The median study duration was 56 days, and the only study reporting a dose used 2000 mg/day in overweight/obese women.1 beneficial2 neutral3 studies