Penbutolol nonclinical toxicology

Penbutolol
LEVATOL ® FDA Package Insert
Indications and Usage
Dosage and Administration
Contraindications
Warnings and Precautions
Adverse Reactions
Drug Interactions
Use in Specific Populations
Overdosage
Description
Clinical Pharmacology
Nonclinical Toxicology
How Supplied/Storage and Handling
Patient Counseling Information
Labels and Packages
Clinical Trials on Penbutolol
ClinicalTrials.gov

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Sheng Shi, M.D. [2]

Nonclinical Toxicology

Studies in rats indicated that the combination of penbutolol, triamterene, and hydrochlorothiazide (up to 40, 50 and 25 mg/kg respectively) increased the incidence and severity of renal tubular dilation and regeneration when compared to that in rats treated only with triamterene and hydrochlorothiazide. Dogs administered the same doses of triamterene and hydrochlorothiazide alone and in combination with penbutolol had an increase in serum alkaline phosphatase and serum alanine transferase, but there were no gross or microscopic abnormalities observed. No significant toxicologic findings were observed in rats and dogs treated with a combination of penbutolol and hydrochlorothiazide.