Low-dose captopril for the treatment of mild to moderate hypertension

E. D. Freis, Barry J Materson, W. W. Neal

Research output: Contribution to journalArticle

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Abstract

Short-term results of this double-blind control trial (previously reported) in patients with initial diastolic blood pressures (DBP) in the range of 92-109 mm Hg indicated that doses of 12.5 or 25 mg captopril (C) three times daily (t.i.d.) and 37.5 mg twice daily (b.i.d.) had similar antihypertensive effectiveness as 50 mg t.i.d. After 7 weeks of C, the addition of hydrochlorothiazide (H) to two-thirds of the patients enhanced the antihypertensive response. This report presents the results of unchanged and uninterrupted treatment for 9.5 months in 46 patients taking C alone, and for 7.8 months in 94 patients taking C plus H or H alone. With C alone, reductions in DPB averaged 8.3, 11.0, 15.1, and 17.5 mm Hg with the 12.5, 25, 37.5, and 50 mg doses respectively. The response to the 12.5 mg dose only was significantly less than the 50 mg dose. With H alone, the reduction in DBP averaged 10.6 mm Hg and with C plus H reductions averaged 15.6, 18.1, 16.8, and 18.7 mm Hg with the 12.5, 25, 37.5, and 50 mg doses of C, respectively. Reductions in DBP with C plus H regimens were significantly different from H alone. There was no waning of effectiveness from short to long term except for the 12.5 mg dose of C alone. During the long-term phase, two patients developed rash and one lost the sense of taste. Neutropenia in one patient probably was not drug-related. There was no terminations for elevated DBP > 104 mm Hg on two successive visits. Thus, C was well tolerated and remained effective over the long term.

Original languageEnglish
JournalHypertension
Volume5
Issue number5 II SUPPL. 3
StatePublished - Dec 1 1983
Externally publishedYes

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Captopril
Blood Pressure
Hypertension
Therapeutics
Antihypertensive Agents
Hydrochlorothiazide
Exanthema
Neutropenia
Pharmaceutical Preparations

ASJC Scopus subject areas

  • Internal Medicine

Cite this

Freis, E. D., Materson, B. J., & Neal, W. W. (1983). Low-dose captopril for the treatment of mild to moderate hypertension. Hypertension, 5(5 II SUPPL. 3).

Low-dose captopril for the treatment of mild to moderate hypertension. / Freis, E. D.; Materson, Barry J; Neal, W. W.

In: Hypertension, Vol. 5, No. 5 II SUPPL. 3, 01.12.1983.

Research output: Contribution to journalArticle

Freis, ED, Materson, BJ & Neal, WW 1983, 'Low-dose captopril for the treatment of mild to moderate hypertension', Hypertension, vol. 5, no. 5 II SUPPL. 3.
Freis ED, Materson BJ, Neal WW. Low-dose captopril for the treatment of mild to moderate hypertension. Hypertension. 1983 Dec 1;5(5 II SUPPL. 3).
Freis, E. D. ; Materson, Barry J ; Neal, W. W. / Low-dose captopril for the treatment of mild to moderate hypertension. In: Hypertension. 1983 ; Vol. 5, No. 5 II SUPPL. 3.
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