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Losartan: what it is for, how to use it and side effects

Losartan is a medication that causes blood vessels to dilate, facilitating the flow of blood, reducing its pressure in the arteries and facilitating the heart’s work. This medication is often used to lower high blood pressure and relieve symptoms of heart failure.

This medicine can be found in dosages of 25, 50 or 100 mg, in conventional pharmacies, in the form of a generic or with different trade names such as Losartan, Corus, Cozaar, Torlós, Valtrian, Zart and Zaarpress, for example.

what is it for

Losartan potassium is a drug that is indicated for:

1. High blood pressure treatment

Losartan potassium is indicated for the treatment of hypertension and heart failure when treatment with ACE inhibitors is no longer considered appropriate.

2. Reduced risk of cardiovascular disease

This drug can also be used to reduce the risk of cardiovascular death, stroke, and myocardial infarction in people who have high blood pressure and left ventricular hypertrophy.

3. Kidney protection in people with type 2 diabetes and proteinuria

Losartan potassium is also indicated to delay the progression of kidney disease and to reduce proteinuria. Learn what it is and what causes proteinuria.

How to use

The recommended dose should be guided by a general practitioner or cardiologist, as it varies according to the problem to be treated, the symptoms, other drugs being used and the body’s response to the drug.

The general guidelines state:

  • High pressure: 50 mg once a day is normally recommended, and the dose can be increased up to 100 mg;
  • Cardiac insufficiency: the initial dose is normally 12.5 mg once daily, but may be increased to 50 mg;
  • Reducing the risk of cardiovascular disease in people with hypertension and left ventricular hypertrophy: The starting dose is 50 mg once daily, which can be increased to 100 mg or added to hydrochlorothiazide, based on the person’s response to the initial dose;
  • Kidney protection in people with type 2 diabetes and proteinuria: The starting dose is 50 mg daily, which can be increased to 100 mg based on the blood pressure response to the initial dosage.

This remedy is usually taken in the morning, but it can be used at any time of the day, as it maintains its action for 24 hours. The tablet can be broken.

Possible side effects

Some of the most common side effects that may occur during treatment with Losartan include dizziness, low blood pressure, hyperkalemia, excessive tiredness and lightheadedness.

who shouldn’t take

Losartan potassium is contraindicated in people who are allergic to the active substance or to any component present in the formula.

In addition, this medicine should not be used by pregnant and breastfeeding women, as well as people with liver and kidney problems or who are being treated with medicines containing aliskiren.

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