thanks so much for your heads-up. My neurologist is going to thoroughly research this, and get back to me. I appreciate the time you took to warn me of treatement risks. Luckily, colonoscopy done at the same time as endoscopy showed GI was ok, otherwise. But the HP was found in a biopsy done on a node, so there's more to the story. Still, the fact that my stalevo has been so irrregularly working, means that there's a good chance that this is the rest of the explanation why I'm off so ridiculously often lately. Leonore