User Reviews for Calan SR

I used Verapamil for 5 years to treat supraventricular tachycardia (SVT). With each visit to the doctor, they increased my dosage. I started out taking 30mg once a day, and ended with 180mg once a day. For the most part, my symptoms were never controlled. The drug caused extreme fatigue and tiredness. I often had severe headaches and was constipated. I have been switched to Atenolol 50mg once a day now. Hopefully I won't have as many unwanted side effects.

I have been taking CALAN SR 120 for over 10 years now. My episodes of SVT occur at most a couple of times a year and then for short duration. My pharmacy issued me a generic once because CALAN was not available and I had SVTs almost daily. I was very glad when CALAN became available again. I would not like to be without it.