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TARKA is indicated for the treatment of hypertension.
This fixed combination drug is not indicated for the initial therapy of hypertension (see DOSAGE AND ADMINISTRATION).
In using TARKA, consideration should be given to the fact that an angiotensin converting enzyme inhibitor, captopril, has caused agranulocytosis, particularly in patients with renal impairment or collagen vascular disease, and that available data are insufficient to show that trandolapril does not have similar risk (see WARNINGS - Neutropenia/Agranulocytosis).
DOSAGE AND ADMINISTRATION
The recommended usual dosage range of trandolapril for hypertension is 1 to 4 mg per day administered in a single dose or two divided doses. The recommended usual dosage range of Isoptin-SR for hypertension is 120 to 480 mg per day administered in a single dose or two divided doses.
The hazards (see WARNINGS) of trandolapril are generally independent of dose; those of verapamil are a mixture of dose-dependent phenomena (primarily dizziness, AV block, constipation) and dose-independent phenomena, the former much more common than the latter. Therapy with any combination of trandolapril and verapamil will thus be associated with both sets of dose-independent hazards. The dose-dependent side effects of verapamil have not been shown to be decreased by the addition of trandolapril nor vice versa.
Rarely, the dose-independent hazards of trandolapril are serious. To minimize dose-independent hazards, it is usually appropriate to begin therapy with TARKA only after a patient has either (a) failed to achieve the desired antihypertensive effect with one or the other monotherapy at its respective maximally recommended dose and shortest dosing interval, or (b) the dose of one or the other monotherapy cannot be increased further because of dose-limiting side effects.
Clinical trials with TARKA have explored only once-a-day doses. The antihypertensive effect and or adverse effects of adding 4 mg of trandolapril once-a-day to a dose of 240 mg Isoptin-SR administered twice-a-day has not been studied, nor have the effects of adding as little of 180 mg Isoptin-SR to 2 mg trandolapril administered twice-a-day been evaluated. Over the dose range of Isoptin-SR 120 to 240 mg once-a-day and trandolapril 0.5 to 8 mg once-a-day, the effects of the combination increase with increasing doses of either component.
For convenience, patients receiving trandolapril (up to 8 mg) and verapamil (up to 240 mg) in separate tablets, administered once-a-day, may instead wish to receive tablets of TARKA containing the same component doses.
TARKA should be administered with food.
TARKA 2/180 mg tablets are supplied as pink, oval, film-coated tablets containing 2 mg trandolapril in an immediate release form and 180 mg verapamil hydrochloride in a sustained release form. The tablet is debossed with a triangle and 182 on one side and plain on the other side.
NDC 0074-3287-13 - bottles of 100
TARKA 1/240 mg tablets are supplied as white, oval, film-coated tablets containing 1 mg trandolapril in an immediate release form and 240 mg verapamil hydrochloride in a sustained release form. The tablet is debossed with a triangle and 241 on one side and plain on the other side.
NDC 0074-3288-13 - bottles of 100
TARKA 2/240 mg tablets are supplied as gold, oval, film-coated tablets containing 2 mg trandolapril in an immediate release form and 240 mg verapamil hydrochloride in a sustained release form. The tablet is debossed with a triangle and 242 on one side and plain on the other side.
NDC 0074-3289-13 - bottles of 100
TARKA 4/240 mg tablets are supplied as reddish-brown, oval, film-coated tablets containing 4 mg trandolapril in an immediate release form and 240 mg verapamil hydrochloride in a sustained release form. The tablet is debossed with a triangle and 244 on one side and plain on the other side.
NDC 0074-3290-13 - bottles of 100
Dispense in well-closed container with safety closure.
Store at 15°-25°C (59°-77°F) see USP.
Abbott Laboratories North Chicago, IL 60064, U.S.A. Rev: 8/2012.
Last reviewed on RxList: 9/24/2012
This monograph has been modified to include the generic and brand name in many instances.
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