A term from the book/movie A Clockwork Orange. Milk laced with drugs, such as LSD, synthetic mescaline, or adrenochrome, all are also known as either vellocet synthemesc or drencrom.(Nasdat vocabulary)
The Korova milkbar sold milk-plus, milk plus vellocet or synthemesc or drencrom, which is what we were drinking. This would sharpen you up and make you ready for a bit of the old ultra-violence.