In addition to being It's Always Sunny's biggest drunk, Charlie also has used the largest range of drugs in episodes of the show. Like with the rest of the cast, beer is his drug of choice, but the character has ingested everything from steroids, poppers, and marijuana to cocaine, LSD, and various inhalants. Frank, on the other hand, has more discerning tastes, and has consumed just seven drugs in total across the show's run, including the fictional Adderall/Ritalin cross, Ridderall.