Senna for Constipation
Medically reviewed by a licensed pharmacist · Last reviewed 5/24/2026
Dose
17.2-34.4mg of sennosides by mouth at bedtime as needed. Onset 6-12 hours. Limit to occasional use (not daily, not >7 days).
What to watch for
- Bowel obstruction
- Appendicitis suspected
- Ibd flare
Not for children under 12.
Sources
- FDA OTC Monograph
- American College of Obstetricians and Gynecologists
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Where to buy
This page is for general education and is not medical advice. It does not replace a consultation with a licensed pharmacist or your clinician. Always read and follow the product label. If symptoms are severe, worsening, or persistent, seek professional care.