Losartan

• Antihypertensive Agents
• Antiarrhythmic Agents
• Angiotensin II Receptor Antagonists
• ATC:C09CA01

• Cozaar
• DUP 89
• Hyzaar
• Lacidipine
• Lortaan

• Hyzaar

C₂₂H₂₃ClN₆O

http://www.rxlist.com/cgi/generic/losar.htm

Losartan FDA

Losartan MSDS

D. J. Carini et al., U.S. Pat. 5,138,69 (1992)

422.911 g/mol

183.5-184.5 ^oC

0.82 mg/L

Solid

5.438

Tablet

For the treatment of hypertension.

Losartan is the first of a class of antihypertensive agents called angiotensin II (AG II) receptor antagonists. It is, along with its longer acting active metabolite (E-3174), a specific and selective AT1 receptor antagonist. Losartan blocks the vasoconstrictor and aldosterone-secreting effects of angiotensin II by selectively blocking the binding of angiotensin II to the AT1 receptor found in many tissues, (e.g., vascular smooth muscle, adrenal gland).

Well absorbed, the systemic bioavailability of losartan is approximately 33%

Hypotension and tachycardia; Bradycardia could occur from parasympathetic (vagal) stimulation, LD₅₀= 1000 mg/kg (orally in rat)

PATIENT INFORMATION

Losartan potassium is used to treat high blood pressure. It may be used alone
or with other medications for high blood pressure. This medication should,
generally, not be used during pregnancy. If you are pregnant or considering
becoming pregnant, inform your physician immediately to discuss the risks
versus benefits. There are few side effects associated with losartan potassium.
Those most frequently reported, cough, upper respiratory infection and
dizziness, occurred no more frequently than in patients who did not take this
medication. You may take this medication with or without food. You should have
your blood pressure checked regularly

Humans and other mammals