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Losartan Potassium

Losartan Potassium 50MG

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What is Losartan Potassium?

Losartan Potassium is a medication used to treat high blood pressure. It helps lower blood pressure and may reduce the risk of stroke in certain patients. It is also used for kidney disease in people with type 2 diabetes.

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What is Losartan Potassium ?

Losartan Potassium is a medication used to treat high blood pressure. It helps lower blood pressure and may reduce the risk of stroke in certain patients. It is also used for kidney disease in people with type 2 diabetes.

Source: MedlinePlus, U.S. National Library of Medicine

  • Confusion, weakness, uneven heartbeat, trouble breathing, numbness or tingling in your hands, feet, or lips
  • Rapid weight gain, swelling in your hands, ankles, or feet
  • Lightheadedness, dizziness, fainting
  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
  • Change in how much or how often you urinate
  • It is not safe to take this medicine during pregnancy. It could harm an unborn baby. Tell your doctor right away if you become pregnant.
  • Tell your doctor if you are breastfeeding, or if you have kidney disease, liver disease, congestive heart failure, or diabetes. Tell your doctor if you have had angioedema that was caused by a blood pressure medicine.
  • This medicine could lower your blood pressure too much, especially when you first use it or if you are dehydrated. Stand or sit up slowly if you feel lightheaded or dizzy.
  • Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.
  • Keep all medicine out of the reach of children. Never share your medicine with anyone.
What is losartan potassium used for?
Losartan potassium is FDA-approved to treat high blood pressure, to lower the risk of stroke in people who have high blood pressure along with left ventricular hypertrophy (though it may not reduce stroke risk in Black or African American patients), and to treat diabetic kidney disease in people with type 2 diabetes and high blood pressure. Your prescriber determines the right use for you.
What are the most common side effects of losartan?
The most common side effects include dizziness, upper respiratory infection, nasal congestion, and back pain. Losartan can also raise potassium levels, lower blood pressure too much (especially if you are dehydrated or on a low-salt diet), and affect kidney function. Rarely, it can cause angioedema (serious swelling). Contact your doctor or pharmacist if side effects concern you.
Is losartan the same as Cozaar?
Yes. Losartan potassium is the generic version of the brand-name drug Cozaar. They contain the same active ingredient and work the same way. The generic is typically much less expensive than the brand.
What foods and medications should you avoid while taking losartan?
Because losartan can raise potassium, use caution with potassium supplements, salt substitutes that contain potassium, and potassium-sparing water pills unless your prescriber approves. Combining losartan with ACE inhibitors requires caution, and it should not be used with aliskiren if you have diabetes. Always give your doctor and pharmacist your full list of medications and supplements so they can check for interactions.
Why can't you take losartan while pregnant?
Losartan carries a boxed warning because medicines that act on the renin-angiotensin system can injure or cause the death of a developing baby. If you become pregnant or think you might be, stop taking losartan and contact your prescriber right away to discuss a safer option.
How much does Losartan Potassium cost without insurance?
The price of Losartan Potassium without insurance varies by pharmacy, dosage, and quantity. Rx.com compares cash prices at more than 60,000 US pharmacies so you can find the lowest price near you. Many people save up to 90% off retail prices with a free Rx.com coupon.
What are the common side effects of Losartan Potassium?
Common side effects of Losartan Potassium may include: Confusion, weakness, uneven heartbeat, trouble breathing, numbness or tingling in your hands, feet, or lips, Rapid weight gain, swelling in your hands, ankles, or feet, Lightheadedness, dizziness, fainting, Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing, Change in how much or how often you urinate. This is not a complete list — consult your pharmacist or doctor for full side effect information.
Is there a generic version of Losartan Potassium?
Generic versions may be available for Losartan Potassium. Generics contain the same active ingredients as brand-name drugs and are typically 80–90% cheaper. Search Losartan Potassium on Rx.com to compare generic and brand prices at pharmacies near you.
What is the cheapest pharmacy for Losartan Potassium?
The cheapest pharmacy for Losartan Potassium depends on your location and dosage. Rx.com compares prices at CVS, Walgreens, Walmart, Kroger, Costco, and thousands of independent pharmacies. Enter your ZIP code on Rx.com to find the lowest price for Losartan Potassium near you.

Losartan Potassium Coupons & Prices

Losartan Potassium 50MG

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Losartan Potassium Tablet — prescription drug image
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Losartan Potassium 100mg (90)
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Compounded GLP-1 medications are not FDA-approved and are prepared by state-licensed compounding pharmacies. They are not affiliated with, endorsed by, or equivalent to any brand-name medication or manufacturer. Prescription required; eligibility is determined by a licensed provider. Prices are estimates and may vary.

Looking for a losartan potassium coupon? Losartan potassium is the low-cost generic version of Cozaar, a widely prescribed blood pressure medication. Even though the generic is already inexpensive, the cash price can vary widely from one pharmacy to the next, so comparing before you fill matters. Rx.com checks prices at more than 60,000 pharmacies so you can find a discounted price near you. Enter your ZIP above to see today's price on losartan potassium.

What is losartan potassium and how does it work?

Losartan potassium is an angiotensin II receptor blocker (ARB). It works by blocking a natural substance in the body that tightens blood vessels, which helps blood vessels relax and lowers blood pressure. It is available as a generic and is sold under the brand name Cozaar.

Losartan is FDA-approved to treat high blood pressure (hypertension), either on its own or with other medicines; to lower the risk of stroke in people who have high blood pressure along with left ventricular hypertrophy (a thickening of the heart's main pumping chamber); and to treat diabetic nephropathy (kidney disease) in people with type 2 diabetes and high blood pressure. Note that in patients who are Black or African American, losartan may not reduce stroke risk. Your prescriber decides whether losartan is right for your situation.

Losartan potassium cost and how to save without insurance

Because losartan is a generic, it is generally one of the more affordable blood pressure medications, even for people paying cash without insurance. That said, the price you actually pay is not the same everywhere. Different pharmacies set different cash prices for the exact same prescription, and the gap between the highest and lowest price can be surprisingly large. That is why comparing pharmacies is worth a few seconds of your time.

Rx.com compares losartan potassium prices across more than 60,000 pharmacies and shows you a discount price you can use at the counter. Prices change often and are shown live, so enter your ZIP above to see today's price near you. There is no manufacturer savings card for generic losartan; the savings here come from comparing pharmacy cash prices.

Losartan alternatives and related medications

Losartan belongs to the ARB family, and there are several related medicines your prescriber might consider. Other ARBs include valsartan, olmesartan, irbesartan, and telmisartan. A closely related class, ACE inhibitors, includes lisinopril.

Losartan is also available combined with a water pill as losartan-hydrochlorothiazide for people who need added blood pressure control. The brand-name version of losartan alone is Cozaar. Only your prescriber can decide whether switching or combining medications is appropriate for you, but you can compare prices on each option here.

Safety information and side effects

Boxed warning — pregnancy: Losartan can cause serious harm or death to a developing baby. If you become pregnant or think you might be pregnant, stop taking losartan and contact your prescriber right away. Medicines that act on the renin-angiotensin system should not be used during pregnancy.

Losartan can raise potassium levels (hyperkalemia), lower blood pressure too much (especially if you are dehydrated or on a low-salt diet or water pills), and affect kidney function. Use caution when combining it with ACE inhibitors, potassium-sparing water pills, or potassium supplements, and avoid using it with aliskiren if you have diabetes. There is also a rare risk of angioedema (serious swelling). Common side effects include dizziness, upper respiratory infection, nasal congestion, and back pain. This is not medical advice — talk with your doctor or pharmacist about your full medication list and any conditions before starting or changing losartan.

Sources & accuracy

This Losartan Potassium information was written and reviewed against authoritative U.S. medical sources — MedlinePlus (U.S. National Library of Medicine), DailyMed, and FDA prescribing information — and checked for accuracy. It is provided for education and is not a substitute for professional medical advice.

Verify the official label: Losartan Potassium on DailyMed (FDA)

Reviewed against FDA labeling · Last reviewed July 2026

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Medical disclaimer: This information is provided for general educational purposes only and is not medical advice. It is not a substitute for professional diagnosis or treatment. Always consult a licensed physician, pharmacist, or other qualified healthcare provider before starting, stopping, or changing any medication or treatment. Never disregard professional medical advice or delay seeking it because of something you read here. If you think you may have a medical emergency, call your doctor or 911 immediately.


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