Usage: Drains broncheal tubes, loosens phelgm (mucus), thins broncheal secretions, and makes coughs more productive
Active Ingredients: Guaifenesin
Each bottle contains Ultra-Pure Guaifenesin 600mg

Inactive Ingredients: Aerosil 200, Di-Calcium Phospahte, Copovidone, maltodextrin, Povidone, Sodium Starch Glycolate, Magnesium Stearate, Microcrystalline Cellulose, Stearic Acid.

Directions: Adults and children 12 years of age and older: 1/2 (300mg) caplet  to 1 caplets (600mg) every 4 - 8 hours as needed, not to exceed 4 caplets (2400mg) in 24 hours or as directed by a doctor