Losartan: What It Is, How It Works, and What Alternatives You Should Know

When you hear Losartan, a type of angiotensin II receptor blocker (ARB) used to treat high blood pressure and protect kidney function in people with diabetes. Also known as Cozaar, it works by relaxing blood vessels so your heart doesn’t have to work as hard. Unlike some older blood pressure drugs, Losartan doesn’t cause a dry cough—something many people appreciate after switching from ACE inhibitors like lisinopril.

It’s often prescribed alongside other meds like hydrochlorothiazide, which helps your body get rid of extra salt and water. That combo is common because it tackles high blood pressure from two angles. But Losartan isn’t just about lowering numbers—it’s also used to slow kidney damage in diabetics and reduce stroke risk in people with an enlarged heart. You’ll see it mentioned in posts about Candesartan, another ARB that works similarly but may last longer or have different side effects, and in comparisons with Valsartan, a close cousin often used in the same situations. People switch between these based on cost, side effects, or how well their body responds.

What you won’t always hear is how Losartan affects sleep, energy, or even your electrolytes. Some users report dizziness when standing up, especially at first. Others notice their potassium levels drop or rise, depending on what else they’re taking. That’s why it’s important to know how it interacts with other drugs—like NSAIDs or potassium supplements. You’ll find real-world stories in the posts below about people managing these issues, comparing Losartan to other options, and figuring out what works for their body.

Below, you’ll find detailed comparisons with similar drugs, tips for avoiding common side effects, and advice on how to tell if your medication is working—or if you need to talk to your doctor about switching. Whether you’re new to Losartan or have been on it for years, there’s something here that’ll help you take better control of your health.