I find that whenever I'm taking P&B shakes, I have a metallic taste in my mouth all day. I read somewhere that Bentonite should not come in contact with metal, so I use a plastic spoon. However, what about my mercury fillings??

Another question - why do I get terrible heartburn after a meal that includes taking a digestive enzyme? I don't get the heartburn if I don't take one though. In other words, I don't think it's what I'm eating. Is there something in the enzymes that would cause this?