Bisacodyl USP 5 mg. Gentle yet effective. Trusted for guaranteed relief. No. 1 Doctor recommended brand (Among stimulant laxatives). Overnight relief 6 to 12 hours. Easy-to-swallow, comfort coated Dulcolax Tablets are gentle enough for sensitive stomachs, yet strong enough for complete overnight relief. Trust Dulcolax Tablets to relieve constipation in 6 to 12 hours. Made in Mexico.