Tiazac (TIE-a-zac), a new once-daily diltiazem for hypertension

Forest Labs is now marketing Tiazac (TIE-a-zac), a new once-daily diltiazem for hypertension.

It's an alternative to Cardizem CD or Dilacor XR...and makes it now a three-way fight to get on formularies. Every indication is that they are therapeutically equivalent.

But these products AREN'T officially bioequivalent...because of their different sustained-release formulations. Pharmacists will not AUTOMATICALLY substitute these three drugs.

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