Psyllium HuskNew

Reviewed Sep 16, 2026

Psyllium (Plantago ovata) is a soluble, gel-forming viscous fiber and one of the few supplements with an FDA-authorized health claim linking its soluble fiber to a reduced risk of coronary heart disease. Its cardiometabolic evidence base is unusually mature. A 2025 dose-response meta-analysis of 41 randomized controlled trials (2,049 participants) found that psyllium significantly lowered LDL cholesterol by a weighted mean of about 8.6 mg/dL (95% CI 4.2–12.9; p<0.001) and total cholesterol by about 9.1 mg/dL (95% CI 4.4–13.7), with a small, non-significant rise in HDL and a non-significant reduction in triglycerides (Genes & Nutrition, 2025). An earlier high-quality meta-analysis of 28 trials at a median dose of roughly 10 g/day reported an LDL reduction of 0.33 mmol/L (about 13 mg/dL) together with reductions in non-HDL cholesterol and apolipoprotein B, graded as moderate-to-high quality evidence (American Journal of Clinical Nutrition, 2018). Psyllium’s effect on blood sugar appears proportional to baseline control: a meta-analysis of 35 trials found little glucose change in people with normal blood sugar but a fasting-glucose reduction of roughly 37 mg/dL and an HbA1c reduction of about 0.97% in people being treated for type 2 diabetes (American Journal of Clinical Nutrition, 2015), and an umbrella review of medicinal-plant meta-analyses ranked psyllium among the most effective botanicals for lowering HbA1c (Frontiers in Pharmacology, 2021). Typical study doses range from 5 to 15 g/day taken with a large glass of water before meals; introduce it gradually to limit bloating and gas, always take it with adequate fluid to avoid choking or throat/esophageal obstruction, and separate it from oral medications by 2–4 hours, since the gel can slow their absorption. Psyllium is a dietary supplement, not a drug, and is not intended to diagnose, treat, cure, or prevent any disease; discuss use with your physician, especially if you take glucose-lowering or cholesterol medications.