Diltiazem

· Diltiazem ER=XR and they’re 24-hour release

· Diltiazem SR=CR and they’re 12 hour release

· Therefore, diltiazem ER/XR are NOT the same as SR/CR

· Tiazac and Tiazac XC (Cardizem LA) are not interchangeable.

Cardizem LA comes in tablet form. The tablets are extended-release (24hrs) and should not be broken, chewed, or crushed. Cardizem LA is known in Canada as Tiazac XC and it is a once daily dosing.

Cardizem CD (Diltiazem CD) comes in capsule form. It is extended-release and should not be opened, broken, or chewed. It releases diltiazem slowly over 24hrs and is usually administered ONCE DAILY.

Diltiazem CD and Diltiazem Hcl ER are both extended release meds. However, before we could process order for the other, we will be requiring doctor’s confirmation.