Treatment of essential hypertension. This fixed dose combination is indicated in patients whose blood pressure is not adequately controlled with enalapril alone. This fixed dose may also replace the combination of 20 mg enalapril maleate and 12.5 mg hydrochlorothiazide in patients who have been stabilised on the individual active substances given in the same proportions as separate medications. (See sections 4.3, 4.4, 4.5 and 5.1). This fixed dose combination is not suitable for initial therapy.