About Telmisartan
Medically reviewed by Dr Khizer Hussain Junaidy, MD Pharmacology, Diabetologist & Bariatric Physician, on 23 Oct 2026.
What it is for
Lowers blood pressure. It also lowers the risk of heart attack and stroke in people at high risk. In diabetes, it may help protect the kidneys.
How to take it
Take it once a day at the same time, with or without food.
Common side effects
- Dizziness when standing up quickly, mostly in the first days.
- High potassium in some people.
Call your doctor if
- You become pregnant or plan a pregnancy. It must be changed.
- Swelling of the face, lips or tongue.
- Very low urine output, or severe vomiting and diarrhoea.
Take care
Not for use in pregnancy. Avoid potassium salt substitutes unless the doctor says so. Avoid regular painkillers like diclofenac or ibuprofen unless the doctor agrees.
From our clinic: Your doctor will check kidney tests and potassium after starting or changing the dose.