This category lists pages about alcohol, nicotine, cocaine, LSD, and related recreational substances. Its members include Alcohol, Nicotine, and LSD. The category is organized as individual substance pages, each reached from the member list. Open a named entry for its page content, and use to browse the wider substance index.

Alcohol, nicotine, cocaine, LSD, and related substances from a bioenergetic perspective. The focus is on understanding metabolic impact and minimizing damage.