Yep they took it off Amazon and mostly quit selling it everywhere and was quasi banned by the FDA that had sent letters to manufacturers saying they could be liable for selling a product used in hospitals to cure overdose thereby making it a drug. They did this a couple months ago.
Bulksupplements.com just changed the name to L Cysteine HCL, but they allso sell it as N Acetyl Cysteine There are many different names for it. Wikkipedia changed the page on NAC that use to have all the different names but now its not there anymore so thats how I know about L Cysteine HCL.
Dont confuse with Cystine...not the same thing.