Best Supplements for Improved Fasting Plasma Glucose
Ranked by research evidence. Compare 32 supplements across 41 papers from the biomedical literature, with effect direction, evidence strength, and dose range for each.
Top picks by evidence
- Low evidence4 studies
Across 4 studies, 2 reported beneficial moderate-sized effects on fasting plasma glucose, while 2 reported neutral small-sized effects, indicating mixed evidence. The most studied dose was 1 g/day, and effects were observed in clinical populations (type 2 diabetes and PCOS) over a median study duration of 169 days.
Dose: 1 g/day - Low evidence3 studies
Across 3 studies, 2 reported beneficial small-sized effects of vitamin D supplementation on improved fasting plasma glucose, while 1 reported a neutral effect. The evidence is predominantly small in magnitude, with one RCT showing a significant reduction in fasting glucose (-3.6 mg/dL vs. +1.5 mg/dL, p=0.04) in 60 women with gestational diabetes over 42 days.
Dose: 1000 IU/dayProduct matchViva Naturals — Vitamin D3 with Organic Liquid Coconut Oil125 mcg · $15.16 · ★5.0 (208)
- LowL-CarnitineAcross 4 studies, 2 reported beneficial moderate-sized effects on fasting plasma glucose, while 2 reported neutral small-sized effects, indicating mixed evidence. The most studied dose was 1 g/day, and effects were observed in clinical populations (type 2 diabetes and PCOS) over a median study duration of 169 days. · Dose: 1 g/day2 beneficial2 neutral4 studies
- LowVitamin DAcross 3 studies, 2 reported beneficial small-sized effects of vitamin D supplementation on improved fasting plasma glucose, while 1 reported a neutral effect. The evidence is predominantly small in magnitude, with one RCT showing a significant reduction in fasting glucose (-3.6 mg/dL vs. +1.5 mg/dL, p=0.04) in 60 women with gestational diabetes over 42 days. · Dose: 1000 IU/day2 beneficial1 neutral3 studies