Does Losartan Cause Dry Cough Like Lisinopril?
No, losartan does not cause dry cough like lisinopril. Lisinopril, an ACE inhibitor, triggers cough in 5-20% of patients by blocking the breakdown of bradykinin, a peptide that irritates airways.[1] Losartan, an angiotensin II receptor blocker (ARB), works downstream by blocking receptors without affecting bradykinin levels, so cough occurs in under 2% of users—similar to placebo rates.[2][3]
Why Lisinopril Causes Cough but ARBs Like Losartan Don't
ACE inhibitors like lisinopril raise bradykinin accumulation, leading to inflammation in the lungs and throat. ARBs such as losartan, valsartan, or candesartan avoid this pathway entirely. Clinical trials show cough rates for losartan at 1.1-1.9%, versus 2.5-10% for ACE inhibitors.[4] Patients switching from lisinopril to losartan see cough resolve in 70-90% of cases within weeks.[5]
Common Side Effects of Losartan
Losartan patients report dizziness (4%), back pain (2%), and nasal congestion (1%) more often than cough. Hyperkalemia and kidney function changes occur in those with pre-existing conditions, but cough rarely prompts discontinuation.[2]
When Cough Happens on Losartan Anyway
Isolated cough reports exist, often tied to upper respiratory infections, allergies, or concurrent meds rather than the drug itself. Risk factors include female sex, smoking, or asthma—same as with ACE inhibitors. If cough persists, doctors check for these before switching.[3][6]
Best Alternatives for Cough-Prone Patients
| Drug Class | Examples | Cough Risk | Notes |
|------------|----------|------------|-------|
| ACE Inhibitors | Lisinopril, Enalapril | High (5-20%) | First-line for blood pressure but avoid if cough-sensitive |
| ARBs | Losartan, Valsartan | Low (<2%) | Preferred switch for ACE cough; similar efficacy |
| Calcium Channel Blockers | Amlodipine | Very low | Good for hypertension without bradykinin effects |
| Diuretics | Hydrochlorothiazide | Low | Often combined with ARBs |
Guidelines from the American Heart Association recommend ARBs over ACE inhibitors for patients with prior cough.[7]
Sources
[1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2722693/
[2] Losartan prescribing information, Merck
[3] https://www.nejm.org/doi/full/10.1056/NEJM199904083401304
[4] https://pubmed.ncbi.nlm.nih.gov/11030474/
[5] https://www.ahajournals.org/doi/10.1161/01.CIR.0000029795.48002.40
[6] https://www.mayoclinic.org/drugs-supplements/losartan-oral-route/side-effects/drg-20067341
[7] https://www.ahajournals.org/doi/10.1161/HYP.0000000000000065