Do not take this medication with any of the following:
-Cisapride
-Flibanserin
-Lomitapide
-Pimozide
-Red yeast rice
This medication may also interact with the following:
-Anesthetics
-Buspirone
-Carbamazepine
-Certain medications for blood pressure, heart disease, irregular heartbeat
-Certain medications for cholesterol like atorvastatin, lovastatin, and simvastatin
-Certain medications for sleep or anxiety
-Cimetidine
-Clonidine
-Cyclosporine
-Rifampin

They need to know if you have any of these conditions:
-Heart attack
-Heart disease
-Irregular heartbeat or rhythm
-Low blood pressure
-An unusual or allergic reaction to diltiazem, other medications, foods, dyes, or preservatives
-Pregnant or trying to get pregnant
-Breast-feeding

Visit your care team for regular checks on your progress. Check your blood pressure as directed. Know what your blood pressure should be and when to contact your care team.
Do not treat yourself for coughs, colds, or pain while you are using this medication without asking your care team for advice. Some medications may increase your blood pressure.
This medication may affect your coordination, reaction time, or judgment. Do not drive or operate machinery until you know how this medication affects you. Sit up or stand slowly to reduce the risk of dizzy or fainting spells. Drinking alcohol with this medication can increase the risk of these side effects.

Keep out of the reach of children and pets.
Store at room temperature between 20 and 25 degrees C (68 and 77 degrees F). Throw away any unused medication after the expiration date.