About losartan potassium
Angiotensin II receptor blocker
Used for
- High blood pressure
- Kidney protection in some people with type 2 diabetes
- Heart failure when other treatments are unsuitable
Usual adult dose
High blood pressure: usually 50 mg once daily; may be adjusted. Other conditions require individualized dosing.
Usual dose in children
For children aged 6 years and older with high blood pressure: usually 0.7 mg/kg once daily, up to 50 mg; specialist supervision is needed.
Common side effects
- Dizziness
- Low blood pressure
- High potassium
- Changes in kidney function
Important warnings
- Can cause serious harm or death to an unborn baby; avoid during pregnancy.
- Potassium levels and kidney function may need monitoring.
- Risk of low blood pressure or kidney problems, especially with dehydration.
- Do not use with aliskiren in people with diabetes.
Pregnancy
Avoid during pregnancy, especially after the first trimester; it can seriously harm the unborn baby.
Breastfeeding
Breastfeeding safety is not well established; use in newborns or premature infants is generally avoided.
Interactions
- Potassium supplements or potassium-containing salt substitutes can raise potassium.
- NSAIDs such as ibuprofen may worsen kidney function and reduce blood-pressure effects.
- Lithium levels may rise.
- ACE inhibitors, aliskiren, or other blood-pressure medicines may increase low blood pressure or kidney risks.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.