Psyllium Husk Fiber
Psyllium husk is a soluble fiber derived from the seed coatings of Plantago ovata, a plant native to India and western Asia. When mixed with water, it forms a viscous gel that passes through the digestive tract, making it one of the most well-studied fiber supplements for digestive health and cardiovascular risk reduction.
Research Evidence
Feeds beneficial gut bacteria as a prebiotic fiber
LimitedReduces LDL and total cholesterol levels
StrongSupports healthy blood pressure levels
ModerateLowers post-meal blood glucose spikes
ModerateRelieves constipation and improves bowel regularity
StrongMay aid weight management through increased satiety
ModerateExpert Evidence
43 references from 3 experts
“In addition to plenty of non-starchy vegetables and fruits, I supplement with an additional 2 1/2 g of psyllium husk.”
5 Supplements with STRONG Evidence of Benefit
0:4330 references in 15 episodes from 2020–2025
Safety & Cautions
Side Effects
- Bloating and gas, especially when starting
- Abdominal cramping at higher doses
- Potential choking if taken without sufficient water
- Rare allergic reactions in sensitive individuals
Psyllium is generally well-tolerated at standard doses and has a long safety record. However, it should always be taken with plenty of water to prevent esophageal or intestinal obstruction, and people on medications should take them at least one to two hours apart since psyllium can delay drug absorption.
Pairs Well With
Price Comparison
From $0.02/ct
N
NOW FoodsBest Value
4.6
•500 ct$0.02/ct
$9.90 total
N
Nutricost
4.5
•500 ct$0.04/ct
$19.95 total
M
MEMBER´S MARK
4.7
•400 ct$0.04/ct
$16.25 total
S
Sunergetic
4.5
•240 ct$0.09/ct
$21.95 total
M
Metamucil
4.6
•300 ct$0.07/ct
$19.99 total
K
Konsyl
4.6
•90 ct$0.29/ct
$25.99 total