Hi, Thanks for posting in HCM. I understand your concern. Lisinopril is a drug belonging to the class of angiotensin-converting enzyme (ACE) inhibitor class, which is used primarily in treatment of high blood pressure and congestive heart failure. Commonly reported side effects of use of lisinopril include dizziness, headache, hypotension, hyperkalemia (raised potassium levels), increased blood urea nitrogen and increased serum creatinine. You need to review your medication on consultation with Physician and take the one which would suit you to keep your blood pressure under control. Hope the information provided would be helpful. All the best.