Blue Velvet

The ‘street’ name for an IV drug of abuse, said to produce euphoria and excitement, consisting of paregoric—elixir terpin hydrate—with codeine, and PBZ (pyribenzamine) or tripelennamine, a weak heroin substitute, triphenamine-HCl, mixed with talc
Adverse effects Depression, tachycardia, systolic murmur, rales, hepatomegaly with centrilobular hepatic necrosis, sudden death