Psyllium husk is a soluble fibre used for cholesterol and regular bowel movements.
Calculator Official intake Study doses Best form Safety Sources
This is not an essential nutrient, so there is no official daily intake. Only study doses are shown.
These are doses tested in research, not personal advice. Some exceed the upper limit because they were short courses or given under medical care.
10 g a day
A meta-analysis of 28 trials (1,924 people) found a median of about 10 g psyllium a day lowered LDL cholesterol by 0.33 mmol/L, with moderate to high quality evidence.
Practical pick
Psyllium husk (g)
Why: Plain psyllium husk works; mix it with a full glass of water.
Psyllium husk; other soluble fibre from oats, barley and beans.
Take other medicines at a different time, as fibre can slow their absorption.
Always take with plenty of water. Start low to limit bloating.
Pregnant, breastfeeding, on medication, or managing a health condition? Check with a doctor or pharmacist before starting a supplement.
Values checked: November 12, 2026.