Lisinopril induced cough symptoms
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Lisinopril-Induced Cough: Symptoms and Incidence
Lisinopril, an angiotensin-converting enzyme (ACE) inhibitor, is well known to cause a persistent, dry, nonproductive cough in some patients. The cough is often described as tickling or irritating in the throat and can be persistent as long as the medication is continued, typically resolving within days to weeks after stopping the drug 26. The onset of cough usually occurs within the first week of therapy but can also develop after several weeks or months of use 26.
Frequency and Risk Factors for Lisinopril-Induced Cough
The incidence of cough with lisinopril varies across studies, but it is generally reported in about 8–19% of patients, with some studies noting even higher rates in those with a prior history of ACE inhibitor-induced cough 1346+3 MORE. Notably, women are significantly more likely to develop lisinopril-induced cough than men, with some studies showing women report cough three times more often than men (12.6% vs. 4.4%) 138. Nonsmokers also appear to be at higher risk compared to smokers .
Comparison with Other Antihypertensive Medications
Lisinopril-induced cough is more common than with other antihypertensive agents such as nifedipine, valsartan, losartan, or hydrochlorothiazide. For example, studies show that the incidence of cough is significantly higher with lisinopril (up to 68.9–87.5%) compared to valsartan, losartan, or hydrochlorothiazide, where the rates are similar to placebo (about 19–36%) 47910. This makes angiotensin II receptor blockers (ARBs) like losartan and valsartan preferred alternatives for patients who develop cough with ACE inhibitors 47910.
Mechanism of Lisinopril-Induced Cough
The cough is believed to be caused by the accumulation of bradykinin and substance P, which are normally broken down by ACE. Lisinopril inhibits this breakdown, leading to increased levels of these mediators, which stimulate cough reflex pathways in the lungs and central nervous system 256. Experimental studies also suggest a central protussive action of lisinopril, mediated by bradykinin and substance P in the brainstem .
Clinical Management and Resolution
Lisinopril-induced cough is not dose-dependent and can occur regardless of the combination with other antihypertensive drugs 68. The cough typically resolves within 1 to 4 weeks after stopping lisinopril . In some cases, nonsteroidal anti-inflammatory drugs (NSAIDs) like indomethacin have been reported to reduce or eliminate the cough 28.
Conclusion
Lisinopril-induced cough is a common, bothersome side effect, especially in women and nonsmokers. The cough is dry, persistent, and usually resolves after discontinuation of the drug. ARBs such as losartan and valsartan are effective alternatives with a much lower risk of cough. The underlying mechanism involves increased bradykinin and substance P, which stimulate the cough reflex. Recognizing and managing this side effect is important for patient comfort and adherence to antihypertensive therapy.
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