Do not take this medicine with any of the following medications:
-MAOIs like Carbex, Eldepryl, Marplan, Nardil, and Parnate

This medicine may also interact with the following medications:
-alcohol
-barbiturates, like phenobarbital
-furazolidone
-linezolid
-medicines for sleep
-other medicines for cold, cough or allergy
-procarbazine
-some herbal or nutritional supplements like St. John''s Wort

They need to know if you have any of these conditions:
-asthma
-heart disease
-glaucoma
-kidney disease
-liver disease
-long lasting (chronic) cough
-other health condition
-prostate problems
-taken an MAOI like Carbex, Eldepryl, Marplan, Nardil, or Parnate in last 14 days
-an unusual or allergic reaction to chlorpheniramine, dextromethorphan, other medicines, foods, dyes, or preservatives
-pregnant or trying to get pregnant
-breast-feeding

Tell your doctor or healthcare professional if your symptoms do not start to get better or if they get worse. See the doctor if the symptoms last more than 7 days or if a fever, rash, or long lasting headache is also present. Coughs that last more than 7 days or come back can be a sign of a serious health condition.

You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks.

Keep out of the reach of children.

Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Throw away any unused medicine after the expiration date.