Avoiding tobacco, alcohol, and caffeine will help reduce the frequency of PVC's as these agents are known precipitating factors. I can't say why you feel PVC's more often with exercise or lying down - everyone s different. Vitamins and other remedies have no effect on PVC's. As you can see by the large number of responses your question has generated, many people have PVC's so you are not alone. I hope you find this information useful.
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