Introduction: High blood pressure is a systemic disease which has major clinical and psycho-social repercussions, involves a high morbidity-mortality rate and generates high costs for the health system. Its treatment involves the use of antihypertensive drugs, which are commercialized as trademark, generic or similar drugs.
Purpose: To verify the antihypertensive effect produced by a similar dose of different trademarks of enalapril maleate in spontaneously hypertensive rats (SHR).