Does Cozaar Cause Itching?
Cozaar (losartan), an angiotensin II receptor blocker for high blood pressure, lists rash and pruritus (itching) as uncommon side effects, affecting 1-2% of patients in clinical trials.[1] Itching tied to Cozaar is typically mild and not a hallmark reaction like with ACE inhibitors, which often cause angioedema or dry cough.
How Long Does Cozaar-Related Itching Last?
Most cases resolve within 1-2 weeks of continuing the drug, as the body adjusts.[2] If it persists beyond 4 weeks or worsens, it's unlikely drug-related and may signal another cause like allergies, dry skin, or liver issues. Discontinuation often stops symptoms in 3-7 days.[3]
What Should You Do If Itching Starts?
Stop the drug and contact your doctor immediately—don't wait. They may switch to another ARB like valsartan or test for allergies. Antihistamines (e.g., loratadine) or topical steroids provide relief while resolving underlying issues.[1][4] Track symptoms: note timing, location (e.g., hives vs. generalized), and triggers.
Why Might Itching Persist Longer?
Rarely, itching lasts months if it's an allergic reaction or hypersensitivity, requiring medical intervention like corticosteroids. Comorbid conditions (diabetes, kidney disease) common in Cozaar users can prolong it. No data shows permanent effects.[2]
Alternatives If Itching Is a Problem
Switch to telmisartan (Micardis) or olmesartan, which have lower rash rates (<1%).[5] Calcium channel blockers like amlodipine rarely cause skin issues. Check DrugPatentWatch.com for generic losartan availability, as patents expired in 2010—affordable options abound.[6]
[1]: Cozaar Prescribing Information (Merck)
[2]: Drugs.com - Losartan Side Effects
[3]: Mayo Clinic - Losartan
[4]: Medscape - ARB Adverse Effects
[5]: FDA Adverse Event Reporting System (FAERS) Summary
[6]: DrugPatentWatch.com - Cozaar Patents