I Accidentally Took Double Dose of Losartan (Cozaar)?


The most common medication blunder is taking or administering a double dose. Alternatively, someone becomes sidetracked and takes a prescribed medication once and then again. An excess dose of some medications can cause complications. For example, using too much blood pressure medication may cause dizziness. Diabetes medication taken in excess can result in low blood sugar. Furthermore, you may run out of drugs too quickly.

Antihypertensive medication errors are common, and there is a clear link between medication errors and poor blood pressure control, according to research. Even among individuals who take their medication appropriately, there is a 20% possibility that it is worsening their blood pressure levels.

What is Losartan?


Losartan, also known as Cozaar, is a medicine that is primarily used to treat high blood pressure. It is also employed in the treatment of diabetic renal disease, heart failure, and left ventricular hypertrophy. It is taken orally. It can be taken alone or in conjunction with other blood pressure medications.

How does losartan work?

Losartan belongs to the angiotensin receptor blocker (ARB) class of medicines. Losartan works by inhibiting the action of angiotensin II, a substance in your body that causes blood vessels to constrict and tighten. Losartan relaxes and dilates your blood vessels. This helps reduce your blood pressure.

This action aids in the treatment of high blood pressure as well as the other two disorders for which losartan is commonly prescribed. Because high blood pressure and left ventricular hypertrophy (LVH) raise your risk of stroke, lowering your blood pressure lowers your risk. Lowering your blood pressure also lowers your chance of kidney injury. This is because high blood pressure increases the risk of kidney damage caused by diabetes-related high blood sugar levels.

How should I take losartan?

Losartan should be taken exactly as directed by your doctor. Please follow all of the instructions on your prescription label. Your doctor may adjust your dose from time to time to ensure you get optimal outcomes. Take this medication in greater or lesser dosages or for a longer period of time than suggested. The following is the suggested losartan dosage:

Adult dosage (ages 18–64 years): The recommended starting dose is 50 mg once daily. Dosages range from 25 to 100 mg per day. Losartan is taken once or twice a day.

Child dosage (ages 6–17 years): The dosage is determined by your child’s weight. The typical dose is 0.7 mg/kg body weight, taken once per day. Your child’s doctor will adjust the dosage based on how your child responds to the drug.

Child dosage (ages 0–5 years): This medication should not be given to children under the age of six.

Senior dosage (ages 65 and older): There are no specific dose guidelines for seniors. Seniors may take longer to process medications. As a result, a typical adult dosage may result in greater than normal amounts of this medicine in your body. If you are a senior citizen, you may require a lower dose or a different dosing plan.

Losartan can be taken with or without food. If you are experiencing persistent vomiting or diarrhea, or if you are perspiring more than normal, contact your doctor. While taking this drug, you can easily get dehydrated, which might result in severely low blood pressure or a hazardous electrolyte imbalance.

Your blood pressure will need to be tested on a regular basis. Visit your doctor on a regular basis.

Losartan may take 3 to 6 weeks to have an effect on your blood pressure. Continue to take the medication as advised for the best outcomes. If your symptoms do not improve after three weeks of medication, consult your doctor.

If you are being treated for high blood pressure, continue to take your medicine even if you feel fine. Symptoms of high blood pressure are not always present. You could be on blood pressure medicine for the rest of your life.

What to do if you accidentally took a double dose of Losartan

drug overdose effects

If you happen to take more Losartan tablets than prescribed or if a child accidentally swallows some, it’s essential to contact your doctor immediately. Taking a double dose of Losartan can lead to side effects similar to the regular dose, but it may also cause symptoms of overdose, such as low blood pressure, an increased heartbeat, or possibly a decreased heartbeat. Remember, never take an extra dose to make up for a missed tablet.

The usual dose of Losartan is 50 mg, taken orally once daily. If you accidentally took two 25 mg tablets, it’s not likely to cause significant problems. However, if your doctor prescribed a lower dose for you, it’s essential to reach out to your healthcare provider as soon as possible.

Taking a double dose of Losartan can be especially concerning for those with existing kidney conditions, as the medication can affect kidney function. To take Losartan, swallow the tablets with a glass of water and try to take them around the same time each day. Continue taking the medication until your doctor instructs you otherwise. Regular adherence to your prescribed dose and communication with your doctor are essential for your health and well-being.

How long does it take for Losartan to get out of your system?

The body transforms losartan into an active metabolite after a dose. The metabolite is responsible for the majority of losartan’s blood pressure-lowering actions. Losartan has a half-life of around 2 hours, and metabolites have a half-life of 6 to 9 hours. This means that clearing losartan and its metabolites from your system may take a few days.

What is the most important information I should know about Losartan?

It’s important not to use losartan if you are allergic to it. Also, if you have diabetes, avoid taking losartan with any medication that contains aliskiren, which is a blood pressure medicine. This combination can be harmful, especially if you have kidney disease.

If you are pregnant, do not use losartan, and inform your doctor immediately if you become pregnant. Taking losartan during the second or third trimester can cause harm or even death to the unborn baby.

Before using losartan, tell your doctor if you have a history of kidney disease, liver disease, congestive heart failure, electrolyte imbalances (like high levels of potassium), are on a low-salt diet, or if you are dehydrated.

While using this medicine, avoid breastfeeding, as it may not be safe for the baby.

Losartan is not suitable for children under 6 years old and should only be used as directed by your doctor.

What are the side effects of Losartan?

If you experience signs of an allergic reaction, like hives, difficulty breathing, or swelling of your face, lips, tongue, or throat, seek emergency medical help immediately.

Call your doctor right away if you have any of the following symptoms:

  • Feeling light-headed as if you might faint.
  • Pain or burning sensation when you urinate.
  • High potassium level, which may cause nausea, weakness, tingling sensations, chest pain, irregular heartbeats, or loss of movement.
  • Kidney problems, including little or no urination, rapid weight gain, painful or difficult urination, and swelling in your hands, feet, or ankles.

Common side effects may include dizziness, back pain, or cold symptoms like a stuffy nose, sneezing, and a sore throat.

Remember that this list of side effects is not exhaustive, and other reactions may occur.

What drugs can interact with losartan?

Aliskiren, lithium, and medications that may raise the blood potassium level (such as ACE inhibitors like benazepril, lisinopril, and birth control pills containing drospirenone) are a few items that may interact with losartan.

Some items contain substances that can make your heart failure worse or raise your blood pressure. Inform your pharmacist of the products you take and ask how to use them properly, especially if you use diet supplements, NSAIDs like ibuprofen, or NSAIDs like naproxen.


A prescription medication called losartan is used to manage hypertension in diabetic individuals, stop stroke, heart failure, and slow kidney damage. Although uncommon, it is possible to take two doses of Losartan. However, if this happens, see a doctor right away. Losartan should not be double-dosed to make up for missing doses; instead, take the next dose as scheduled.


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