Psyllium husk, derived from the seeds of Plantago ovata and widely known as Isabgol, is a soluble fiber supplement with one of the strongest evidence bases among herbal products. Research suggests that psyllium can significantly improve cholesterol levels, with studies showing reductions in LDL cholesterol when consumed regularly, and meta-analyses indicate it may also support blood sugar regulation by slowing carbohydrate absorption after meals. Its gel-forming properties make it particularly well studied for digestive health, where evidence supports its use as a bulk-forming agent for constipation relief, and interestingly, its water-absorbing capacity has also shown benefit in managing loose stools and certain symptoms associated with irritable bowel syndrome. Some research further points to modest effects on satiety and weight management, likely due to its ability to promote fullness.
Compare this supplementThese are commonly referenced dosage ranges for this supplement. They are not medical recommendations. Always consult a healthcare provider before supplementing.
| Form | Dose range | Frequency | Studied for | Source |
|---|---|---|---|---|
| Capsule | 500–3,000 mg | Three times daily | General digestive health and constipation relief | Common commercial capsule dosing; consistent with clinical study protocols |
| Powder | 10–20 g | Daily | Blood sugar regulation | Based on RCTs examining glycemic control in type 2 diabetes patients |
| Powder | 10–15 g | Daily | Cholesterol management | Common in clinical trials; FDA-approved health claim studies using ~10-15g/day split across meals |
| Powder | 5–10 g | Three times daily | Constipation relief | Common in clinical trials; doses typically taken before meals with adequate water |
| Powder | 10–30 g | Daily | IBS relief | Based on RCTs for IBS symptom management; range varies by symptom severity |
| Powder | 6–15 g | Daily | Weight management | Based on RCTs showing appetite suppression and satiety improvement |