What Happens If You Take a Double Dose of Losartan?

Losartan, a commonly prescribed medication for high blood pressure, plays a crucial role in managing cardiovascular health. However, like any medication, it’s essential to take it correctly to avoid potential risks. In this blog post, we’ll delve into what happens if you accidentally take a double dose of losartan, the effects on your body, and steps to mitigate any adverse consequences.

Understanding Losartan

What Is Losartan?

Losartan, marketed under the trade name Cozaar, belongs to a class of drugs known as angiotensin receptor blockers (ARBs). Its primary purpose is to treat high blood pressure (hypertension), but it’s also prescribed for diabetic kidney disease, heart failure, and left ventricular enlargement. By blocking the action of angiotensin II, losartan helps relax and widen blood vessels, ultimately lowering blood pressure.

Proper Dosage

Before we explore the implications of a double dose, let’s review the recommended dosages:

Adults (ages 18–64 years): The typical starting dosage is 50 mg once daily, with dosages ranging between 25 and 100 mg per day. Losartan can be taken once or twice daily.
Children (ages 6–17 years): The dosage is weight-based, usually around 0.7 mg/kg of body weight taken once daily. Adjustments may occur based on the child’s response to the medication.
Seniors (ages 65 years and older): No specific recommendations exist for senior dosages.

What Happens If You Take a Double Dose?

Taking a double dose of losartan can lead to several consequences:

Low Blood Pressure (Hypotension)

Losartan’s primary action is to relax blood vessels, which lowers blood pressure. A double dose could cause excessive blood vessel relaxation, resulting in dizziness, weakness, or fainting.

Increased Heart Rate

An overdose may lead to an elevated heart rate (tachycardia), potentially putting additional strain on the cardiovascular system.

Possibly Decreased Heart Rate

In some cases, losartan overdose might paradoxically slow down the heart rate (bradycardia), affecting blood flow and oxygen delivery.

Risk of Running Out of Medication

Taking an extra dose means you’ll deplete your medication supply faster, potentially leaving you without proper treatment until your next refill.

Immediate Steps to Take

If you accidentally take a double dose of losartan, follow these steps:

Stay Calm: Panicking won’t help. Breathe deeply and focus on the next steps.
Contact Medical Help: Call your doctor or seek medical attention promptly. They will guide you based on your specific situation.
Monitor Symptoms: Pay attention to any symptoms like dizziness, rapid heartbeat, or weakness.
Avoid Future Errors: Set reminders or use a pill organizer to prevent accidental double dosing.


While losartan is beneficial for managing blood pressure and related conditions, responsible medication management is crucial. Always adhere to your prescribed dosage, and if an accidental double dose occurs, seek professional advice promptly. Your health matters, and proper medication administration ensures optimal well-being.

Remember, it’s better to be cautious than to risk potential complications. Let’s prioritize our health and make informed choices when it comes to medications like losartan

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