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I have been taking Calan SR pills to control my heart palpitations for 10 years. I am being forced to move to the genetic Verapamil SR. I have a mitro valve prolapse. I have tried to use this generic before but it does not control by palpitations. What are the best manufacturers for this drug? Is there a different generic I can take that would help me? Thanks to all that answer ## Hello, John! How are you? Verapamil SR is the generic name for the medication, it is not the name of one by any particular manufacturer. Do you remember any other details about the one you tried, before, such as the manufacturer, how it looked, or the markings on it? The FDA lists the typical side effects of this medication as possibly including nausea, dizziness, headache, and increased urination.1 REPLY Updated
I am wondering what this tablets of medication are Yellow Oblong Tablet Markings Cal An on one side SR 240 on the other they are scored in the middle ## Hi Susan, The pill you are describing is identified as Calan SR (240 mg). The active ingredient in this pill is verapamil; which is used in the treatment of hypertension, angina pectoris, cardiac arrhythmia, and most recently, cluster headaches (migraines). To view information about this drug, please click on the link below... I hope this helps!1 REPLY Updated