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The antihypertensive drugs known as calcium channel blockers (e.g., Procardia, Cardizem, Adalat, and Calan), already implicated in increasing the risk of heart attack (see HealthFacts, September 1995), are now suspected of causing gastrointestinal bleeding and cancer in elderly people. Marco Pavor, M. D., Department of Preventive Medicine, University of Tennessee, Memphis, and colleagues followed 750 hypertensive persons, 71 years of age or older, from 1988 to 1992.(American Journal of Hypertension, July 1996). Participants were taking one of the following antihypertensives: a beta-blocker (e.g., Inderal, Tenormin, Lopressor); an angiotensin-converting enzyme (ACE) inhibitor (e.g., Vasotec, Capoten) ; or a CCB. negative side affects of viagra viagra for copd compare lavitra to cialis woman cialis for woman cock on viagra