<unk>  is a vitamin from the vitamin B complex and a Cyanide Antidote that is FDA approved for the treatment of known or suspected cyanide poisoning.   Common adverse reactions include transient chromaturia, erythema, rash, hypertension, nausea, headache, and injection site reactions.
Hydroxocobalamin
Cyanocobalamin
Sodium aurothiomalate
Aluminium nicotinate
Sodium selenate
Acetylcysteine 
Thiocarboxime
Zinc gluconate