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Psyllium Dosage

Medically reviewed by Drugs.com. Last updated on Apr 4, 2025.

Applies to the following strengths: 3.5 g/3.7 g; 3.4 g/3.7 g; 3.3 g/7 g; 3.4 g/11 g; 4.03 g/6 g; 3.4 g/5.8 g; 3.4 g; 3.4 g/7 g; 100%; 6 g; 85%; 3.4 g/6.5 g; 2 g/7 g; 520 mg; 3.4 g/12 g; 3.5 g/5.8 g; 50%; 3.4 g/5.2 g; 500 mg; 1.7 g; 3.4 g/5.4 g; 400 mg; 525 mg; 2 g; 2.5 g; 2.4 g/3.7 g; 2.5 g/7 g

Usual Adult Dose for:

Usual Pediatric Dose for:

Additional dosage information:

Usual Adult Dose for Constipation

Daily fiber:
Adults 19 to 50 years: Male: 38 g/day; Female: 25 g/day
Pregnancy: 28 g/day
Lactation: 29 g/day

Dose:
1 to 2 rounded teaspoonfuls, 1 to 2 packets, 1 to 2 wafers, or 5 to 6 capsules orally with 8 ounces of fluid 1 to 3 times a day

Usual Adult Dose for Irritable Bowel Syndrome

Daily fiber:
Adults 19 to 50 years: Male: 38 g/day; Female: 25 g/day
Pregnancy: 28 g/day
Lactation: 29 g/day

Dose:
1 to 2 rounded teaspoonfuls, 1 to 2 packets, 1 to 2 wafers, or 5 to 6 capsules orally with 8 ounces of fluid 1 to 3 times a day

Usual Pediatric Dose for Constipation

Daily fiber:
Children 1 to 3 years: 19 g/day
Children 4 to 8 years: 25 g/day
Children 9 to 13 years: Male: 31 g/day; Female: 26 g/day
Children 14 to 18 years: Male: 38 g/day; Female: 26 g/day

Constipation:
Children 6 to 11 years: 1.25 to 15 g orally per day in divided doses
Children greater than or equal to 12 years and Adults: 2.5 to 30 g per day in divided doses

Renal Dose Adjustments

No adjustments recommended

Liver Dose Adjustments

No adjustments recommended

Dialysis

No adjustments recommended

Other Comments

Obstruction of the esophagus, stomach, small intestine, and colon has occurred when bulk-forming laxatives are administered without adequate fluids or in patients with intestinal stenosis.

Clinical studies have shown that 7 g per day of soluble fiber from psyllium husk may help reduce the risk of heart disease when used as part of a diet low in saturated fat and cholesterol.

Frequently asked questions

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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