I was on Carbo/Levo 25/100 manufactured by Teva. I was switched to the same drug, same strength but manufactued by Goldline. The Teva drug enabled me to feel normal. The Goldline disabled me. I could not walk. Went back to Teva's formulation and I'm back to normal. What is in the Goldline version of this drug that made my condition worse that is not in Teva's?