Hello. Thank you for posting.
Always read the information that comes with any medication so you know what to expect. Losartan is used to treat high blood pressure (hypertension). It is also used to lower the risk of stroke in certain people with heart disease.
Common side effects may include:
cold or flu symptoms such as stuffy nose, sneezing, sore throat, fever
pain in your legs or back
stomach pain, diarrhea
a headache, dizziness
tired feeling or sleep problems (insomnia).
Call your doctor for medical advice about side effects.