The half-life of lisinopril is approximately 12 hours. This means that in the average person, lisinopril should disappear from the body within 3-4 days. However, since some of the effects of the drug last longer than that, the effects of this drug can last up to 1-2 weeks after stopping the drug.
I think it would be best for you to discuss with your doctor if there are other reasons for the change in your erections. You may also post your question with Health Central's Sexual Health Experts.
Also continue to monitor your blood pressure at home. If you have continuous elevated blood pressure reading call and inform your doctor.
American Heart Association Recommendations are as follows:
Normal-Systolic: less than 120 and Diastolic: less than 80
Prehypertension-Systolic: 120-139 or Diastolic: 80-89 High Blood Pressure
Stage I-Systolic: 140-159 or Diastolic: 90-99 High Blood Pressure
Stage II-Systolic: 160 or higher or Diastolic: 100 or higher
Hypertensive Crisis (Emergency Care Needed)-Systolic: Higher than 180 or Diastolic: Higher than 110.
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