It is used to treat many conditions, such as headache, muscle aches, arthritis, backache, toothaches, colds, and fevers. Doxylamine is an antihistamine. It blocks the effects of the naturally occurring chemical histamine in the body. Dextromethorphan is a cough suppressant. It suppresses an area in your brain that causes you to cough.
Pseudoephedrine is a decongestant.
Do not take acetaminophen without first talking to your doctor if you drink more than three alcoholic beverages per day or if you have had alcoholic liver disease. You may not be able to take acetaminophen. It is not known whether this medication will harm an unborn baby. Do not take this medication without first talking to your doctor if you are pregnant. This medication passes into breast milk and may harm a nursing infant.