Do not take this medicine with any of the following medications:
-bromocriptine
-cocaine
-ergot alkaloids like dihydroergotamine, ergonovine, ergotamine, methylergonovine
-MAOIs like Carbex, Eldepryl, Marplan, Nardil, and Parnate

This medicine may also interact with the following medications:
-digoxin
-indomethacin
-mecamylamine
-medicines for blood pressure
-medicines for colds or allergies
-medicines for depression, anxiety, or psychotic disturbances
-medicines for sleep
-methyldopa
-reserpine
-some herbal or nutritional supplements
-some medicines for Parkinson''s disease
-stimulant medicines for attention disorders, weight loss, or to stay awake

They need to know if you have any of the following conditions:
-blood vessel disease
-diabetes
-fever
-glaucoma
-heart disease or heart rhythm problems
-high blood pressure
-other chronic disease
-over active thyroid
-prostate trouble
-an unusual or allergic reaction to guaifenesin, pseudoephedrine, other medicines, foods, dyes, or preservatives
-pregnant or trying to get pregnant
-breast-feeding

Tell your doctor or health care professional if your symptoms do not improve within 5 days or if they get worse. If you have trouble falling asleep at night, take the last dose of the day at least a few hours before bedtime.

Drink water as instructed while you are taking this medicine to help loosen mucus.

Your mouth may get dry. Chewing sugarless gum or sucking hard candy, and drinking plenty of water may help. Contact your doctor if the problem does not go away or is severe.

This medicine may cause dry eyes and blurred vision. If you wear contact lenses you may feel some discomfort. Lubricating drops may help. See your eye doctor if the problem does not go away or is severe.

Keep out of the reach of children.

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