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  • Title: Increased efficacy and tolerability with losartan plus hydrochlorothiazide in patients with uncontrolled hypertension and therapy-related symptoms receiving two monotherapies.
    Author: Naidoo DP, Sareli P, Marin F, Aroca-Martinez G, Maritz FJ, Jardim PC, Guerrero AA, Thompson CA, Bero T, Drazka J, Kosmalova V, Dumortier T, Smith RD.
    Journal: Adv Ther; 1999; 16(5):187-99. PubMed ID: 10915394.
    Abstract:
    The efficacy and tolerability of losartan 100 mg/hydrochlorothiazide (HCTZ) 25 mg and enalapril 10 mg/HCTZ 25 mg were compared in a double-blind, randomized trial in hypertensive patients inadequately controlled and experiencing side effects on prior therapy. Patients with moderate or severe hypertension, currently treated with at least two single-agent drugs (excluding angiotensin-converting enzyme inhibitors), with a sitting diastolic blood pressure (DBP) above 90 mm Hg, and at least one undesirable drug-related symptom were randomized to once-daily treatment with one of the combinations for 12 weeks. Losartan/HCTZ lowered sitting DBP from the prior therapy baseline by 13.7 mm Hg and sitting systolic blood pressure 19.3 mm Hg; similar reductions occurred with enalapril/HCTZ. Trough sitting DBP was reduced to normal levels (< 90 mm Hg) in 63% of patients switched to the losartan combination and in 58% of those treated with the enalapril combination. Each combination was associated with improved tolerability compared with prior therapy, although fewer patients reported each of 24 undesirable symptoms after 12 weeks of losartan/HCTZ. The improvement from prior therapy in the occurrence of cough was significantly greater with losartan/HCTZ (P = .005). Enalapril/HCTZ, but not losartan/HCTZ, increased serum uric acid levels at week 12. In conclusion, the combination of losartan 100 mg/HCTZ 25 mg offers a beneficial therapeutic option for patients with a history of moderate to severe hypertension whose blood pressure is not adequately controlled or who exhibit side effects while on two or more single-agent antihypertensive drugs. In this population, the switch from prior antihypertensive therapies to once daily losartan 100 mg/HCTZ 25 mg improves blood pressure control and reduces side effects.
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