Losartan can raise blood potassium levels. Medicines and supplements that also increase potassium may raise the risk further.
Official prescribing information specifically warns that combining losartan with other drugs that raise serum potassium can result in hyperkalemia.
Tell your healthcare provider about all medicines and supplements you take, including over-the-counter products.
Your doctor may occasionally order blood tests to monitor potassium levels and kidney function.
## A Special Warning About Pregnancy
Losartan should not be used during pregnancy because drugs that act on the renin-angiotensin system can seriously harm an unborn baby.
Official U.S. prescribing information states that losartan should be discontinued as soon as pregnancy is detected.
If you become pregnant or think you may be pregnant while taking losartan, contact your healthcare professional promptly.
## Final Thoughts
