Hello
Hi & Welcome to Chat Doctor. I appreciate your concern for possible switching over of the medicines for high BP. Since you have been taking Irbesartan 75 mg once daily and now travelling to a foreign country you can be taken Friday as you have been offered. In terms of effective control of BP Irbesartan 75 mg once daily can be considered equivalent to Losartan 25 mg once daily. Wishing you best of your health.