How does losartan work?
Losartan blocks the action of angiotensin II, a hormone that causes blood vessels to tighten. This helps blood vessels relax, lowering blood pressure and improving blood flow.
What is losartan used to treat?
Losartan is commonly prescribed for:
- High blood pressure (hypertension)
- Reducing the risk of strokes in people with high blood pressure and heart disease
- Protecting kidney function in people with diabetes
- Heart failure (to improve heart function and reduce symptoms)
Who can take losartan?
Losartan is suitable for most adults and some children over 6 years old with high blood pressure.
Who might not be able to take losartan?
Losartan may not be suitable if you:
- Have severe kidney or liver disease
- Have low blood pressure
- Are dehydrated
- Are taking certain diuretics or other blood pressure medications
Can I take losartan if I’m pregnant or breastfeeding?
Losartan should not be taken during pregnancy, as it can harm the baby. If you are breastfeeding, consult your doctor before taking it.
What if I miss a dose?
If you forget a dose, take it as soon as you remember. If it’s close to your next dose, skip the missed one—do not take two doses at once.
How effective is losartan?
Losartan is highly effective at lowering blood pressure and protecting the heart and kidneys when taken consistently.
What should I do if I take too much?
Taking too much losartan can cause dizziness, fainting, or dangerously low blood pressure. If you think you’ve taken too much, seek medical help immediately.
What dose of losartan is usually taken?
- For high blood pressure: 50mg to 100mg once daily
- For kidney protection in diabetes: 50mg to 100mg once daily
- For heart failure: Starting dose of 12.5mg once daily, increasing as needed
Your doctor will determine the best dose for your condition.
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What are the side effects of losartan?
Common side effects include:
- Dizziness or lightheadedness
- Fatigue
- Increased potassium levels (which may cause muscle weakness)
- Stuffy nose or cold-like symptoms
Serious side effects, such as severe dizziness, swelling of the face, or kidney problems, require urgent medical attention.
How should I take losartan?
Losartan is taken as a tablet, once daily, swallowed whole with water.
When should losartan be taken?
Losartan can be taken at any time of day, but it’s best to take it at the same time each day.
What are the brand names for losartan?
Losartan is available as a generic medicine, but some branded versions include:
- Cozaar
Final thoughts
Losartan is an effective medication for lowering blood pressure and protecting the kidneys. To get the best results, take it as prescribed and have regular check-ups. If you experience side effects, speak to your doctor or pharmacist.
