Alka Seltzer Plus Cough & Mucus DM, Maximum Strength, Extended-Release Tablets

Other Information: Each tablet contains: magnesium 25 mg. Store between 68-77 degrees F (20-25 degrees C). Misc: Guaifenesin 1200 mg/expectorant. Dextromethorphan hydrobromide 60 mg/cough suppressant. 12 hour. Controls cough. Thins and loosens mucus. New! Parents: learn about teen medicine abuse. www.StopMedicineAbuse.org. Questions or comments? 1-800-986-0369 (Mon-Fri 9am-5pm EST).