I worry more about all the drugs and deaths from them, one report from 2010, mentioned 100,000 from drug/interactions.. I'm not worried about mad cow, it never enters my mind. I'm going to take these 2 for three months and maybe go off and see if the burning returns....

I've been taking supps for over 25 yrs and doing fine on my supps. To each his own, it's true... Thanks all.