Losartan, marketed under the brand name Cozaar, is a medication that is widely used for the treatment of hypertension (high blood pressure). It belongs to a class of drugs known as angiotensin receptor blockers (ARBs).

Losartan works by blocking the action of angiotensin II, a hormone that constricts blood vessels. By blocking the effects of angiotensin II, Losartan causes the blood vessels to relax and widen. This results in a decrease in blood pressure and an improvement in blood flow. It also helps to reduce the workload on the heart, leading to improved cardiac function.

In addition to its use in hypertension, Losartan may be prescribed to individuals with diabetic kidney disease to help protect the kidneys from further damage. It is also sometimes used to reduce the risk of stroke in patients with an enlarged heart.

Losartan is typically taken once daily, with or without food. It is important to follow the prescribed dosage and any additional instructions provided by the healthcare provider. Regular blood pressure monitoring is necessary to ensure the medication is effectively controlling blood pressure levels.

As with any medication, Losartan may cause side effects, although not everyone experiences them. Common side effects may include dizziness, headache, and cough. It is important to report any persistent or severe side effects to a healthcare professional.

Patients should not stop taking Losartan without consulting their healthcare provider. Suddenly discontinuing the medication may cause blood pressure to rise abruptly, which can have serious consequences.

Overall, Losartan is an important medication in the management of hypertension and related conditions. It helps lower blood pressure, improves heart function, and may protect the kidneys in certain patients. Regular monitoring and communication with a healthcare provider are essential for optimal use and management of this medication.