Educational dose math only — not medical advice, not a product recommendation, and not a pass/fail on whether a supplement will work for you.
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Trial reference

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Zahra 2020 meta-analysis, six RCTs pooled −0.96 kg (95% CI −1.81 to −0.11), I²=88% (Obesity Medicine 2020;9:100276, doi:10.1016/j.obmed.2020.100276; journal is not PubMed-indexed, no PMID). Meta did not report pooled mean dose; 3 g/day before meals, split into 1 g doses three times daily, is typical in constituent trials and the EFSA minimum for the weight claim. Psyllium 10.8 g/day is the stronger fiber anchor in this guide.

Educational only — not medical advice. Disclaimer.

Want the outcome before the arithmetic? The reason check opens any registry entry on this page with its trial result first, then compares your daily intake with the studied amount.

NIH DSLD market slice

Median1 g
Products219
Below96%

Bulk CSV dump 16 January 2026 · label entries through 2025. Disclosed amounts only — proprietary blends without gram weights excluded.

Trial floors

Primary

Typical trial dose (anchor, not meta mean) · 3 g over 8-12 weeks (limited evidence · how we grade this) · Secondary outcomes only — Zahra 2020 meta-analysis, six RCTs pooled −0.96 kg (95% CI −1.81 to −0.11), I²=88% (Obesity Medicine 2020;9:100276, doi:10.1016/j.obmed.2020.100276; journal is not PubMed-indexed, no PMID). Meta did not report pooled mean dose; 3 g/day before meals, split into 1 g doses three times daily, is typical in constituent trials and the EFSA minimum for the weight claim. Psyllium 10.8 g/day is the stronger fiber anchor in this guide.

Safety red flags

  • Take each dose with a full glass of water — dry swallowing is a documented choking risk.

Label reading notes

  • Meta did not compute mean g/day; 3 g/day is an anchor dose, not a pooled trial mean.
  • Split it: 1 g three times daily before meals, each with a full glass of water; choking risk if swallowed dry.
  • Not interchangeable with psyllium evidence; different fiber, different meta.
  • High heterogeneity (I²=88%); effect size varies sharply across trials.