title: A comparison of the angiotensin II antagonists valsartan and losartan in the treatment of essential hypertension.
abstract: We compared the angiotensin II receptor antagonist valsartan to losartan as an antihypertensive agent in an 8-week trial. Adults with uncomplicated essential hypertension (baseline seated diastolic blood pressure < 115 mm Hg and > or = 95 mm Hg) were randomized to receive 80 mg valsartan, 50 mg losartan, or placebo once daily. After 4 weeks doses of active medication and placebo were doubled. Seated systolic and diastolic blood pressures were measured and the response rate evaluated. Tolerability was assessed by the incidence of adverse events. Both angiotensin II receptor antagonists produced similar significant reductions in mean blood pressures at 4 and 8 weeks compared to placebo. Valsartan produced a significantly higher number of responders (62%) than losartan (55%, P = .02) at the 8 week treatment endpoint. The incidence of adverse experiences (AE) was similar in all three groups, with headache and dizziness reported most often. Valsartan (80/160 mg) monotherapy in this trial was as effective and well tolerated as 50/100 mg losartan in treating mild to moderate essential hypertension, and at 160 mg has a significantly higher responder rate than 100 mg losartan.
authors.affiliation: Klinfarm Sahlgrenska Sjukhuset, Göteborg, Sweden.
authors.forename: T
authors.initials: T
authors.lastname: Hedner
authors.forename: S
authors.initials: S
authors.lastname: Oparil
authors.forename: K
authors.initials: K
authors.lastname: Rasmussen
authors.forename: A
authors.initials: A
authors.lastname: Rapelli
authors.forename: M
authors.initials: M
authors.lastname: Gatlin
authors.forename: P
authors.initials: P
authors.lastname: Kobi
authors.forename: J
authors.initials: J
authors.lastname: Sullivan
authors.forename: P
authors.initials: P
authors.lastname: Oddou-Stock
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D057911:Angiotensin Receptor Antagonists; D000959:Antihypertensive Agents / Q000009:adverse effects / Q000627:therapeutic use*; D001794:Blood Pressure / Q000187:drug effects; D003971:Diastole; D004244:Dizziness / Q000139:chemically induced; D004311:Double-Blind Method; D005260:Female; D006261:Headache / Q000139:chemically induced; D006801:Humans; D006973:Hypertension / Q000188:drug therapy*; D019808:Losartan / Q000009:adverse effects / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D010352:Patient Dropouts; D013599:Systole; D013777:Tetrazoles / Q000009:adverse effects / Q000627:therapeutic use*; D016896:Treatment Outcome; D014633:Valine / Q000009:adverse effects / Q000031:analogs & derivatives* / Q000627:therapeutic use; D000068756:Valsartan
chemical_list: D057911:Angiotensin Receptor Antagonists; D000959:Antihypertensive Agents; D013777:Tetrazoles; D000068756:Valsartan; D014633:Valine; D019808:Losartan