From the manufactures website:
When you’re sick, mucus can be a master of mayhem. But quick, long-lasting chest congestion relief is just a dose away — with Mucinex extended-release bi-layer tablets release immediately and last for 12 hours.* Mucinex In…Mucus Out®
- Thins and loosens mucus to make coughs more productive and help relieve chest congestion
- Immediate and extended relief that lasts up to 12 hours.
- Mucinex is the #1 doctor recommended OTC expectorant among Internists, General Practitioners & Family Practitioners
Warning: Do not use for children under 12 years of age. Ask a doctor before use if you have: persistent or chronic cough such as occurs w/smoking, asthma, chronic bronchitis, or emphysema, cough accompanied by too much phlegm (mucus). Stop use & ask a doctor if cough lasts more than 7 days, comes back, or occurs w/fever, rash, or persistent headache. These could be signs of serious illness. If pregnant or breast-feeding, ask a health professional before use. Keep out of reach of children. In case of overdose, get medical help or contact a poison control center right away.
*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.
Recommended use: Adults and children 12 years of age and older: take 1 tablet every 4 hours with a full glass of water while symptoms persist. Do not exceed 6 doses in 24 hours.Children under 12 years of age: do not use.