drug stack
A drug stack (or simply "stack") is taking several drugs at once. It can have potential health risks, so they should only be attempted by professionals.
1.) My grandpappy used to take a drug stack of L-dopa, blood pressure medicine, and diabetes stabilizers, and wash them down with prune juice.
2.) Candy stacking is a drug stack consisting of ecstasy and acid.
2.) Candy stacking is a drug stack consisting of ecstasy and acid.