Losartan Side Effects

Like all medications, Losartan can cause side effects. Most people do not experience serious adverse effects, but it is important to know what to look for and when to seek medical care.

Common Side Effects

→Dizziness from blood pressure lowering
→Headache
→Fatigue
→Hyperkalaemia

Serious Side Effects

→Angioedema (less common than with ACE inhibitors)
→Acute kidney injury
→Hyperkalaemia
→Hypotension

When to Seek Medical Care

→Swelling of face, lips, tongue, or throat
→Significant decrease in urine output
→Severe dizziness
→Muscle weakness (high potassium)

Safety Note

If you experience any unexpected or concerning symptoms while taking Losartan, contact your doctor or pharmacist. Do not stop taking Losartan without medical advice unless you experience a serious adverse reaction.

Frequently Asked Questions

Are side effects from Losartan common?

Most patients tolerate Losartan well at therapeutic doses. Common side effects are usually mild and often improve after the first few weeks. Serious side effects are less common but should be reported immediately.

What should I do if I experience side effects from Losartan?

Mild side effects: discuss with your pharmacist, as many resolve spontaneously. Serious side effects: seek medical care immediately and contact your prescriber. Do not stop Losartan abruptly for long-term conditions without medical advice.

More About Losartan

Dosage & Administration

Drug Interactions

Warnings & Precautions

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Medical Disclaimer: This drug reference is provided for informational purposes only and is not a substitute for professional medical advice. Always consult your physician or pharmacist before changing your medication. Information reviewed by the vHospital Editorial Team · Sources: WHO, BNF, FDA prescribing information.