I've tried many things but couldn't believe how effective this is. I've been using it for nearly a year & can unreservedly say that it truly helps. I take it when the tingling starts, cut out chocolate & nuts and I will also take it when one is just starting to form but in both cases neither of them eventuate! whereas normally it would have. I can say this with confidence because I've used it for long enough to know. Highly recommend!