Lisinopril/Hctz

Brand Names: Lisinopril/Hctz

Drug Class: Thiazide Diuretic

Overview

Lisinopril and hydrochlorothiazide tablets combine an angiotensin converting enzyme inhibitor, lisinopril, and a diuretic, hydrochlorothiazide. Lisinopril, a synthetic peptide derivative, is an oral long-acting angiotensin converting enzyme inhibitor. It is chemically described as (S)-1-[N2-(1-carboxy-3-phenylpropyl)-L-lysyl]-L-proline dihydrate.

Mechanism of Action

Lisinopril-Hydrochlorothiazide As a result of its diuretic effects, hydrochlorothiazide increases plasma renin activity, increases aldosterone secretion, and decreases serum potassium. Administration of lisinopril blocks the renin-angiotensin-aldosterone axis and tends to reverse the potassium loss associated with the diuretic. In clinical studies, the extent of blood pressure reduction seen with the combination of lisinopril and hydrochlorothiazide was approximately additive. The lisinopril and hydrochlorothiazide tablets 10 mg/12.5 mg combination worked equally well in Black and Caucasian patients. The lisinopril and hydrochlorothiazide tablets 20 mg/12.

Indications

  • Lisinopril and hydrochlorothiazide tablets are indicated for the treatment of hypertension, to lower blood pressure. Lowering blood pressure lowers the risk of fatal and non-fatal cardiovascular events, primarily strokes and myocardial infarctions. These benefits have been seen in controlled trials of antihypertensive drugs from a wide variety of pharmacologic classes including lisinopril and hydrochlorothiazide. Control of high blood pressure should be part of comprehensive cardiovascular risk management, including, as appropriate, lipid control, diabetes management, antithrombotic therapy,...

Common Doses

  • 10 mg
  • 80 mg
  • 12.5 mg
  • 50 mg

Dosage

Lisinopril monotherapy is an effective treatment of hypertension in once-daily doses of 10 mg to 80 mg, while hydrochlorothiazide monotherapy is effective in doses of 12.5 mg to 50 mg per day. In clinical trials of lisinopril/hydrochlorothiazide combination therapy using lisinopril doses of 10 mg to 80 mg and hydrochlorothiazide doses of 6.25 mg to 50 mg, the antihypertensive response rates generally increased with increasing dose of either component.

Black Box Warning

WARNING: FETAL TOXICITY • When pregnancy is detected, discontinue lisinopril and hydrochlorothiazide tablets as soon as possible. • Drugs that act directly on the renin-angiotensin system can cause injury and death to the developing fetus. See Warnings, Fetal Toxicity.

Contraindications

  • Lisinopril and hydrochlorothiazide tablets are contraindicated in patients who are hypersensitive to any component of this product and in patients with a history of angioedema related to previous treatment with an angiotensin converting enzyme inhibitor and in patients with hereditary or idiopathic angioedema. Because of the hydrochlorothiazide component, this product is contraindicated in patients with anuria or hypersensitivity to other sulfonamide-derived drugs. Lisinopril and hydrochlorothiazide tablets are contraindicated in combination with a neprilysin inhibitor (e.g., sacubitril).

Side Effects

  • Lisinopril and hydrochlorothiazide tablets have been evaluated for safety in 930 patients, including 100 patients treated for 50 weeks or more. In clinical trials with lisinopril and hydrochlorothiazide tablets no adverse experiences peculiar to this combination drug have been observed. Adverse experiences that have occurred have been limited to those that have been previously reported with lisinopril or hydrochlorothiazide.

Interactions

  • No major interactions listed on the FDA label. Always consult a healthcare professional.