Dextromethorphan and promethazine and Nuedexta

• Generic Name: dextromethorphan / promethazine
• Dosage Forms: n.a.
• Other Brand Names: Promethazine with Dextromethorphan, Promethazine with DM, Phenergan with Dextromethorphan, Promethazine DM

Dextromethorphan is a cough suppressant. It affects the signals in the brain that trigger cough reflex.

Promethazine is an antihistamine. It blocks the effects of the naturally occurring chemical histamine in your body.

The combination of dextromethorphan and promethazine used to treat cough, itching, runny nose, sneezing, and itchy or watery eyes caused by colds or allergies.

Dextromethorphan will not treat a cough that is caused by smoking, asthma, or emphysema.

Dextromethorphan and promethazine may also be used for purposes other than those listed in this medication guide.

• Generic Name: dextromethorphan / quinidine
• Dosage Forms: capsule, gelatin coated
• Other Brand Names: Nuedexta

Nuedexta contains a combination of dextromethorphan and quinidine. Dextromethorphan affects the signals in the brain that trigger cough reflex and is generally used as a cough suppressant. Quinidine affects the way that the heart beats and is generally used in people with certain heart rhythm disorders.

Nuedexta is used for the treatment of pseudobulbar affect (PBA).

Nuedexta treats involuntary outbursts of crying or laughing in people with certain neurological disorders, including multiple sclerosis and amyotrophic lateral sclerosis (ALS, or Lou Gehrig's disease).