Telmisartan is used to lower high blood pressure. Telmisartan may also be
used to lower your risk for heart attack, stroke, or death from heart disease.
It’s given to adults who are 55 years or older and at high risk of major heart
disease events who can’t take angiotensin-converting enzyme (ACE)
inhibitors.

Telmisartan works by blocking the effect of angiotensin. This makes your
blood vessels relax more. It also allows your kidney to get rid of excess water
and salt. This helps lower your blood pressure.

Serious side effects

• Faintness , dizziness
• Kidney disease. If you already have kidney disease, this drug may
  make it worse. Symptoms include,swelling in your feet, ankles, or
  hands , unexplained weight gain
• Allergic reaction. Symptoms include: swelling of your face,
  trouble breathing,