Mucinex, Expectorant, Maximum Strength, 1,200 mg, 28 Extended-Release Bi-Layer T
Guaifenesin 1,200 mg Expectorant. 1,200 mg Guaifenesin Extended-Release Bi-Layer Tablets. Children under 12 years of age: Do not use. Take with a full glass of water. Adults and children aged 12 years and over: 1 tablet every 12 hours.