My company does not sell products that have "dangerous" side effects, or indeed "dangerous" anything, nor will it ever in the future. We leave that honour to the pharmaceutical industry. I come from a family that has been involved with naturopathic medicine since the 1950's, and have been a natural health practitioner for over 25 years. We do not sell "dangerous" meaning "toxic" products, with "side-effects" meaning in reality"toxic" effects. However I do encourage customers to use the product as per the advice on our web page. So I hope that answers your question. Mark Lester - founder and owner, The Finchley Clinic Ltd.