It depends on your doseage, but the rule of thumb is 3-4 weeks. Benicar is the most potent medication of it's class. You may see a noticeable drop in 2-5 days, but most recipients report differences in 7-10 days.
Taking Benicar for one week will cause blood pressure to begin to drop and will significantly drop blood pressure to nonhypertensive levels after two weeks.
Benicar is prescribed for high blood pressure patients and normally Benicar takes seven to ten days to take effect. If it on 20mg, within 5 days it is found to reduce the blood pressure.
the anti hypertensive drug Benicar will take 7-10 days for giving the required expected result. sometimes the drug shows it's effect on 5th day onwards