Cortel 40mg Tablet is an antihypertensive agent with an active ingredient called Telmisartan which belongs to the medication class known as an angiotensin II receptor antagonist. Angiotensin II is a naturally occurring substance that narrows your blood vessels, increasing blood pressure. This medicine treats high blood pressure ( essential hypertension) in adults. It is specifically used for hypertension, not caused by any other underlying condition. It functions by inhibiting the effects of angiotensin II, causing the blood vessels to relax and decreasing blood pressure. Additionally, it is also used to reduce cardiovascular ( stroke, heart attack, or failure) conditions in adults. Do not consume Cortel 40mg Tablets if you are allergic to Telmisartan and its other ingredients. Also, do not consume it if you have severe liver (cholestasis or biliary obstruction) conditions, diabetes, or impaired kidney function that was treated with pressure-lowering medicine with aliskiren. Before starting the treatment, inform your doctor if you have any liver, kidney, or heart conditions. Inform your doctor if you have renal artery stenosis (narrowing of one or both renal arteries), kidney transplant, increased aldosterone (water and salt regulation in the body) levels, hypotension (lower blood pressure), raised potassium level, or diabetes Cortel 40mg Tablet is not recommended during early pregnancy and should not be taken beyond the first three months. Adolescents and children up to the age of 18 years are not recommended. Notify your doctor if you are intolerant to some sugar, as this contains lactose.