Related by context. Frequent words. (Click for all words.) 60 cannabidiol 59 heroin morphine 59 alkaloid 56 morphine 56 tetrahydrocannabinol THC 56 alkaloids 55 digitalis 55 9 tetrahydrocannabinol 55 opiate 55 Opiates 55 synthetically produced 55 synthetic narcotic 55 Morphine 54 Buprenorphine 54 tetrahydrocannabinol 54 scopolamine 54 MDMA ecstasy 53 glycosides 53 Erythromycin 53 taxol 53 naturally occurring substance 53 psychoactive 52 narcotic analgesics 52 belladonna 52 shikimic acid 52 synthetic cannabinoid 52 acetic anhydride 52 anti histamines 52 psychoactive effects 52 illicit opium 51 vasodilators 51 Naloxone 51 psychotropic 51 cannabinoid 51 opiates 51 Digoxin 51 Black cohosh 51 opium 51 Benzodiazepines 50 acetylsalicylic acid 50 theophylline 50 cyclosporin 50 benzoic acid 50 saponins 50 addictive substances 50 morphine oxycodone 50 salicylates 50 Astragalus 50 cannabinoids 50 disulfiram 50 L dopa 50 laudanum 50 Psilocybin 50 oxidizing agent 49 Citalopram 49 Grapefruit juice 49 bacterial enzyme 49 hypnotics 49 Alprazolam 49 depressants 49 enzyme inhibitor 49 tartrate 49 Sinemet 49 Opioids 49 narcotic 49 naturally occurring substances 49 papain 49 Furosemide 49 biocatalysts 49 suboxone 49 phencyclidine 49 anticonvulsant 49 vitamin B1 49 sevoflurane 49 Nitroglycerin 49 ergot 49 anxiolytic 48 isomers 48 Amphetamine 48 selegiline 48 coumarin 48 ammonium chloride 48 Baclofen 48 Erythropoietin 48 Ephedrine 48 carbidopa 48 Hydrochloride 48 Chitosan 48 doda 48 Marinol 48 Diazepam 48 injected intravenously 48 transdermal patches 48 Cortisone 48 dimethyl 48 vitamin B3 48 vasodilator 48 spironolactone 48 Methylphenidate 48 opium poppy 47 psychoactive substances