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Evidence-Based Supplement Research
Evidence-Based Supplement Research

Best Supplements for Reduced Insulin Levels

Ranked by research evidence. Compare 49 supplements across 65 papers from the biomedical literature, with effect direction, evidence strength, and dose range for each.

Top picks by evidence

  • Low evidence3 studies

    Across 3 studies, 2 reported beneficial effects of vitamin D supplementation on reducing insulin levels, with effect sizes ranging from moderate to large, while 1 neutral study showed no significant improvement. The evidence is dominated by meta-analyses in clinical populations (patients with diabetes/prediabetes and women with PCOS), with the strongest effects observed in the PCOS population. The evidence base is small, and no consistent dose or duration data were reported.

    Product match
    Viva NaturalsVitamin D3 with Organic Liquid Coconut Oil
    125 mcg · $15.16 · ★5.0 (208)
  • Low evidence3 studies

    Across 3 studies, 2 reported beneficial moderate-sized effects of Lactobacillus salivarius UCC118 on reducing insulin levels, while 1 high-quality RCT found no effect. The predominant effect size is moderate, but the evidence is limited and inconsistent. Most studies focused on pregnant women with gestational diabetes.

    Product match
    MetagenicsUltraFlora Integrity
    20 mg · $67.50
49 supplements
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