Clonazepam
"There are various manufacturer of clonazepam. I always made sure to stay with the same manufacturer. However, a week into taking the pills from my new prescription I started to feel very ill. I still had several pills from my previous refill because I only required  1/2 of the 0.5 mg. It was prescribed for me for chronic neck pain. The manufacturer changed the ingredients and now I have been suffering for months to find a replacement to no avail. It's been working well for years but right now the horrible effects I'm getting I don't think I'd recommended to any one. Please try every option before having to suffer the consequences in the long run."