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Review title: This stuff is not good for you
Product review: There should be a warning on how long you can take this..also there should be a warning that this may cause heart problems. Because of the caffeine in this vitamin i now have heart problems.. the caffeine in it caused me to have pre atrial contraction and pre ventricular contraction, my doctor said it was caused from caffeine. i have drank coke 0 for years so thats not where the caffeine came from. This drug should be taken off of the market. I may end up in a pacemaker over this
