Guaifenesin 1,200 mg Extended-Release (Maximum Strength 12 HR)
Mucinex and its twins. Expectorant. Active ingredients: Guaifenesin 1200 mg.
16 options at Amazon, Walmart, Target, Walgreens, Kroger, CVS. Cheapest: 75¢ per pill; typical Mucinex: $1.18 per pill. Prices are estimates from Oct 2026.
Cheapest options
- Amazon Basic Care Mucus ER Maximum Strength 1200 mg Tablets — Amazon, 14 tablets, $10.49 (75¢ per pill)
- Equate Maximum Strength Mucus Relief ER 1200 mg Tablets — Walmart, 14 tablets, $10.97 (78¢ per pill)
- up&up Maximum Strength Mucus Relief ER 1200 mg Tablets — Target, 14 tablets, $11.99 (86¢ per pill)
- Walgreens Mucus Relief ER Maximum Strength 1200 mg Tablets — Walgreens, 28 tablets, $24.99 (89¢ per pill)
- Kroger Maximum Strength Mucus Relief ER 1200 mg Tablets — Kroger, 14 tablets, $12.99 (93¢ per pill)
- CVS Health Maximum Strength Mucus Relief ER 1200 mg Tablets — CVS, 28 tablets, $25.99 (93¢ per pill)
- Mucinex Maximum Strength 12 Hour Chest Congestion Expectorant — Walmart, 28 tablets, $26.47 (95¢ per pill)
- Mucinex Maximum Strength 12 Hour Chest Congestion Expectorant — Amazon, 28 tablets, $26.99 (96¢ per pill)
Where to find it
Look for the “Cough, Cold & Flu” aisle sign.
Good to know
- Each Maximum Strength tablet has twice the guaifenesin of a regular Mucinex tablet (1,200 mg vs 600 mg), so one tablet here equals two regular ones — compare prices per 1,200 mg, not just per tablet.
- Mucinex Maximum Strength also comes as DM (adds dextromethorphan 60 mg) and D (adds pseudoephedrine HCl 120 mg, sold from behind the pharmacy counter).