Myo-Inositol vs Magnesium

for blood sugar

Stronger evidence: Myo-Inositol

Stronger effect: Myo-Inositol

Safety: Magnesium carries a minor interaction; Myo-Inositol has none recorded.

For blood sugar, Myo-Inositol has the stronger evidence grade.

grade B moderate certainty

improves insulin sensitivity and ovulatory function in PCOS in multiple RCTs

2–4 g/day myo-inositol, women with PCOS / insulin resistance

grade C moderate certainty

modest improvement in insulin sensitivity / fasting glucose, mainly in deficiency or diabetes

250–400 mg/day, adults with insulin resistance

sources: PMID:10000006 · PMID:42197052