NEW
🌾 Psyllium Husk
GoodMeds Psyllium Husk Fiber 520mg Capsules Supplement Soluble…
Cost per serving
$0.03
800 servings · ~800-day supply
$26.99Price from Amazon.com
GoodMeds · Amazon.com 0
See the offer Best Psyllium Husk for constipation
Psyllium husk is a soluble fiber that holds water and softens stool — the ingredient in Metamucil and the most-studied fiber supplement for regularity. Below, the psyllium husk products people use ranked by real cost per dose (to the commonly-studied 5,000 mg dose). A value comparison, not medical advice.
Updated September 2026
What the evidence actually shows
Good evidence. A 2022 meta-analysis in the American Journal of Clinical Nutrition found fiber supplements help chronic constipation, with psyllium at more than 10 g a day for at least four weeks performing best, and the 2023 AGA/ACG guideline suggests fiber supplements as a first step. Take each dose with a full glass of water and increase slowly to limit bloating.
Commonly used: 10 g/day or more, split into doses, each with a full glass of water.
How this list is built: these are psyllium husk products ranked by real cost per dose across our whole psyllium husk catalogue — not filtered or re-ordered by constipation. We don’t hold per-product evidence for a specific use, so we don’t pretend to rank for one. Products whose own label says they are for something else are left out.
Background on psyllium husk from the NIH Office of Dietary Supplements .
The dose, the studies and what to watch for, in full: Psyllium husk: the fiber dose, cholesterol, and cost per gram.
Ranked by cost per dose
NEW
🌾 Psyllium Husk
Nutricost Psyllium Husk 1500mg Per Serving
Cost per serving
$0.04
500 servings · ~500-day supply
$19.95Price from Amazon.com
Nutricost · Amazon.com 0
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🌾 Psyllium Husk
NOW Foods Psyllium Husk 500mg, 500 Capsule (2 Pack)
Cost per serving
$0.05
1000 servings · ~1000-day supply
$45.67Price from Amazon.com
NOW Foods · Amazon.com 0
See the offer NEW
🌾 Psyllium Husk
NOW Foods Supplements, Psyllium Husk Caps 500 mg, Non-GMO…
Cost per serving
$0.05
500 servings · ~500-day supply
$23.09Price from Amazon.com
NOW Foods · Amazon.com 0
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🌾 Psyllium Husk
GoodMeds Psyllium Husk Fiber 520mg Capsules Supplement Soluble…
Cost per serving
$0.05
200 servings · ~200-day supply
$9.99Price from Amazon.com
GoodMeds · Amazon.com 0
See the offer NEW
🌾 Psyllium Husk
NOW Foods Supplements, Psyllium Husk Caps 500 mg, Non-GMO…
Cost per serving
$0.06
200 servings · ~200-day supply
$11.00Price from Amazon.com
NOW Foods · Amazon.com 0
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🌾 Psyllium Husk
NOW Foods Supplements, Psyllium Husk Caps 700 mg with 50 mg…
Cost per serving
$0.06
360 servings · ~360-day supply
$23.09Price from Amazon.com
NOW Foods · Amazon.com 0
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🌾 Psyllium Husk
Yerba Prima Psyllium Husks Veg Caps
Cost per serving
$0.07
800 servings · ~800-day supply
$56.97Price from Amazon.com
Yerba Prima · Amazon.com 0
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🌾 Psyllium Husk
Yerba Prima Psyllium Husks Veg Caps
Cost per serving
$0.07
400 servings · ~400-day supply
$29.97Price from Amazon.com
Yerba Prima · Amazon.com 0
See the offer See the full ranking, benchmarks and lab-tested brands on best psyllium husk by cost per dose.
Frequently asked
Does psyllium husk help with constipation?+
Good evidence. A 2022 meta-analysis in the American Journal of Clinical Nutrition found fiber supplements help chronic constipation, with psyllium at more than 10 g a day for at least four weeks performing best, and the 2023 AGA/ACG guideline suggests fiber supplements as a first step. Take each dose with a full glass of water and increase slowly to limit bloating. This page ranks the products people take by real cost per dose; it does not claim a supplement treats or cures anything. Not medical advice — talk to a clinician about constipation.
Which psyllium husk is cheapest for constipation?+
As of September 2026, the best value we track is GoodMeds Psyllium Husk Fiber 520mg Capsules Supplement Soluble Dietary Colon Support for Women and Men, Restore Digestive Regularity and Balance (800 Count). The full ranking by cost per dose is above; Price ÷ servings ÷ dose — the number retailers rarely divide out.
How much psyllium husk for constipation?+
Commonly 10 g/day or more, split into doses, each with a full glass of water. This is a general reference, not a prescription — confirm the right amount for you with a clinician. Not medical advice.