superdrug means an especially potent or effective drug. Lexicurio rates it Sui generis — a strength score of 94 out of 100.
Etymology
From super- + drug.
noun
- An especially potent or effective drug.“Given the past history of mankind's susceptibility to alcohol, opiates, and nicotine, we cannot say that the human race is not capable of consciously destroying itself by taking a superdrug.”