Shows in which drugs were essential to a plotline or the plot in general (in no particular order):
Breaking Bad (meth, heroin)
Sopranos (coke, heroin, speed, weed, heart condition meds, antidepressants, Peyote, alcohol, crack, MDMA, ketamine)
Mad Men(alcohol, weed, LSD, speed, nicotine)
It's Always Sunny (crack, LSD, alcohol, steroids, MDMA, coke, PCP, bath salts, weed, gasoline, glue)
Mr. Robot (morphine, Adderall, heroin)
Six Feet Under(weed, psilocybin, mdma, meth, crack)
You're The Worst (coke, alcohol, weed)
Euphoria (research chemicals, MDMA, coke, alcohol)
Peep Show (MDMA, coke, psilocybin, crack, alcohol)
Succession (cocaine, MDMA, ketamine)
Freaks and Geeks (weed and alcohol)
Dickinson (weed, opium)
Peaky Blinders (hash, opium, cocaine, alcohol)
Wilfred (weed, Ayahuasca)
Twin Peaks (coke, caffeine)
The Wire(cocaine, heroin, alcohol)
Fleabag (alcohol)