I takemeoprolol,and amlodipine. After I take these drugs. I get,lightheadness,shortness of breath,itching ,rash,hot flash,headache.i have had a pig valve. I swim and do exercises, about an hour a day. For three to four times a week. Sometimes I only swim,three times a week got 30 minutes. I am 78 years old.I feel great after I exercise.