I have, it was caused by Vitamin E. Hence why the stuff I use does not have that particular substance. Just because people got sick does not mean every cart is bad. You do realize they have sold millions upon millions of them both on the legal market and off without issue don't you? Doesn't it strike you that there are methods for creating safe carts? I can even by carts now at Shoppers Drug Mart here in Canada with my prescription. I produce my own and am not concerned about getting sick from them, I have done my research. Thanks for your concerned.