Losartan is a medication used to treat high blood pressure and other related conditions. It is also known by other names such as Cozaar and Hyzaar. These drugs have the same active ingredient as Losartan and work to reduce blood pressure by relaxing blood vessels. Other common synonyms for Losartan include AT1 receptor antagonists, angiotensin receptor blockers, and ARBs. These drugs are commonly used to treat hypertension, kidney disease, and heart failure. It is important to note that each of these medications may have different side effects and dosages, so it is important to consult with a healthcare professional before taking any medication.