Losartan is available as a generic medication [1]. The U.S. Food and Drug Administration (FDA) approves generic drugs, confirming they are safe and effective, and have the same active ingredient, dosage, strength, and administration route as their brand-name counterparts [1].
When Did Generic Losartan Become Available?
Generic versions of losartan became available following the expiration of its patents. The original brand-name drug, Cozaar, was first approved in the United States in 1995 [2]. Patent expirations allow other manufacturers to produce and market generic versions of the drug.
What Are the Different Forms of Losartan?
Losartan is typically prescribed as losartan potassium tablets [3]. These tablets are available in various strengths, commonly ranging from 25 mg to 100 mg [3]. Some formulations may combine losartan with other medications, such as hydrochlorothiazide, a diuretic [4].
Who Manufactures Generic Losartan?
Multiple pharmaceutical companies manufacture generic losartan. These include major generic drug manufacturers and smaller regional companies [5]. Patients can often find generic losartan at most pharmacies.
Why is Losartan Prescribed?
Losartan is primarily used to treat high blood pressure (hypertension) [2]. It belongs to a class of drugs called angiotensin II receptor blockers (ARBs), which work by relaxing blood vessels, thereby lowering blood pressure and reducing the risk of stroke and heart attack [2]. It is also prescribed to protect the kidneys in patients with type 2 diabetes who have protein in their urine and to treat heart failure [2].
What is the Difference Between Brand-Name and Generic Losartan?
The primary difference between brand-name losartan (Cozaar) and its generic versions is the inactive ingredients and the manufacturer [1]. Generic losartan is bioequivalent to the brand-name drug, meaning it works in the same way and has the same therapeutic effect [1]. The cost is often significantly lower for generic medications [1].
What Are the Potential Side Effects of Losartan?
Common side effects of losartan can include dizziness, fatigue, and upper respiratory tract infection [3]. More serious, though less common, side effects may involve kidney problems, low blood pressure, and allergic reactions [3]. Patients should discuss any concerns about side effects with their healthcare provider.
How Does Losartan Compare to Other Blood Pressure Medications?
Losartan, as an ARB, offers an alternative to other classes of blood pressure medications such as ACE inhibitors, calcium channel blockers, and diuretics [6]. ARBs like losartan are often chosen for patients who experience side effects with ACE inhibitors, such as a persistent cough [6]. The choice of medication depends on individual patient factors, including medical history, other conditions, and response to treatment [6].
Can Losartan Be Used During Pregnancy?
Losartan should not be used during pregnancy, especially during the second and third trimesters, as it can cause injury and even death to the fetus [3]. Women who are pregnant or planning to become pregnant should consult their doctor about alternative medications [3].
Sources:
1. https://www.drugpatentwatch.com/
2. https://www.accessdata.fda.gov/scripts/cder/daf/index.cfm?event=searchdetail.process&ApplNo=050740
3. https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/050740s038lbl.pdf
4. https://www.accessdata.fda.gov/scripts/cder/daf/index.cfm?event=searchdetail.process&ApplNo=050747
5. https://www.accessdata.fda.gov/scripts/cder/daf/index.cfm?event=processmanagement.section.generics.page
6. https://www.mayoclinic.org/diseases-conditions/high-blood-pressure/in-depth/blood-pressure-medications/art-20047341