Related by context. All words. (Click for frequent words.) 62 psychoactive substance 60 psychoactive substances 59 psychoactive effects 58 psychoactive stimulant 57 psychoactive drugs 55 psychostimulant drugs 55 opiod 55 cognitive enhancers 55 psycho stimulant 55 substances 55 caffeine nicotine 54 synthetic cannabinoids 54 potent hallucinogen 54 body metabolises 54 psychoactive compounds 54 alkaloids 54 prescription opiates 54 nonaddictive 53 intoxicating substances 53 synthetic stimulants 53 powerfully addictive 53 Salvinorin 52 illicit substances 52 polydrug 52 TFMPP 52 drugs 52 containing mouthwashes 52 CHRNA5 gene 52 pharmacologically 52 Anti depressants 52 Self medicating 52 nicotine inhalers 52 smokeable 52 synthetic cannabinoid 52 smokable form 52 highly addictive 52 lowers inhibitions 51 Nicotine addiction 51 powerfully addictive stimulant 51 addictive behaviors 51 psychoactive 51 Nicotine 51 Psychotropic drugs 51 oxycodone methadone 51 Anti depressant 51 disinhibiting 51 heroin morphine 51 addictions 51 Percocet Vicodin 51 alcoholics 51 pleasurable sensations 51 snorted injected 51 nicotine 51 inveterate smokers 51 sympathomimetic 51 potent carcinogen 51 mood altering 51 illicit drugs 51 Pathological gambling 51 addictive 51 impulsive behaviors 51 salvinorin 50 synthetic stimulant 50 Compulsive gamblers 50 heroin crack cocaine 50 injected snorted smoked 50 Meth addicts 50 inhalants 50 sideeffects 50 psychotropic 50 thebaine 50 painkillers methadone Oxycontin 50 addiction 50 GABA receptors 50 prescription opioids 50 addictive stimulant 50 serotonin dopamine 50 addictive nicotine 50 wean heroin addicts 50 Opiates 50 compulsive disorders 50 psychostimulants 50 MAO inhibitors 50 Prozac Zoloft 50 cortico steroids 50 Ozone disinfection produces 50 acamprosate 50 hallucinogens 50 nonsedating 50 opiods 50 psychoactive chemical 50 Ecstasy GHB 50 biphosphonates 50 methylxanthines 50 Nurofen Plus 50 Salvia Divinorum 50 Maushart admits 49 lorazepam Ativan 49 addictive narcotic 49 vaping 49 disulfiram 49 cough suppressant dextromethorphan 49 destructive behaviors 49 mu opioid agonists 49 legalizers 49 ingested orally 49 Stimulants 49 LSD ecstasy 49 synthetic opiates 49 nicotine addicts 49 ecstasy LSD 49 powerfully addicting 49 xenoestrogens 49 psychostimulant 49 caffeine guarana ginseng 49 wean addicts 49 Jimson weed 49 ubiquinone 49 dimethyltryptamine DMT 49 psychoactive component 49 morphine codeine 49 methylenedioxymethamphetamine 49 Vicodin OxyContin 49 Cough syrups 49 GABRA2 gene 49 vices 49 Inhalants 49 smoked snorted 49 Disulfiram 49 bupropion Zyban 49 benzylpiperazine BZP 49 pseudoephedrine decongestant 49 CNS depressant 49 CYP#E# 49 toxicants 49 alco pops 49 chemically alters 49 stimulant methamphetamine 48 Stimulant drugs 48 monoamines 48 Buprenorphine 48 ingredient dextromethorphan 48 cannabinoid receptors 48 snorted smoked injected 48 hormone disruptors 48 chronic relapsing 48 LSD Ecstasy 48 candy flavored 48 dextromethorphan DXM 48 hydrocodone acetaminophen 48 opiates 48 Barbiturates 48 hand sanitizer gels 48 strychnine arsenic 48 Liver toxicity 48 use disorders AUDs 48 stimulants 48 narcotic analgesic 48 THC tetrahydrocannabinol 48 cetirizine Zyrtec 48 containing DXM 48 MDVP 48 narcotic substances 48 neurotransmitters dopamine 48 synthetic opiate 48 Vigabatrin 48 hypnotics 48 CNS depressants 48 psychotherapies 48 Benzodiazepines 48 Caffeinated beverages 48 benzos 48 suboxone 48 aspartame sucralose 48 robotripping 48 herbal incense 48 Heroin addiction 48 sedative hypnotic 48 Flavored cigarettes 48 illegalization 48 Valium Xanax 48 Caffeinated drinks 48 methadone buprenorphine 48 orally ingested 48 awareness charity Drinkaware 48 herion 48 Vicodin Lortab 48 opioid painkiller 48 adaptogens 48 opiate analgesics 48 antabuse 48 opioid dependent 47 enkephalins 47 addicts 47 Lasix diuretic 47 compulsive behaviors 47 decongestant nasal sprays 47 psychotropics 47 Overconsumption 47 anticonvulsants 47 NUCYNTA ™ 47 melatonin supplements 47 serotonin reuptake inhibitors 47 abusable 47 codeine morphine 47 Tetrahydrocannabinol THC 47 psychotropic substance 47 Opioids 47 synthetic THC 47 chlordiazepoxide 47 cough suppressant 47 marajuana 47 Anti malarial 47 caffine 47 mentholated cigarettes 47 caffeine 47 Dopamine agonists 47 nicotine addiction 47 hepatotoxic 47 consumptive lifestyles 47 endogenous opioid peptides 47 amphetamines ecstasy 47 Herbal medicines 47 caffeinated drinks 47 opiate agonist 47 Vicodin Percocet 47 Acetaldehyde 47 Ritalin Adderall 47 school behaving nonviolently 47 opioid peptides 47 Herbal remedies 47 cognition enhancers 47 opioid agonists legal 47 Adrian Dobs 47 opiate receptors 47 cannabidiol 47 compulsive behavior 47 opioid painkillers 47 oral ingestion 47 pharmacological treatments 47 hillbilly heroin 47 endogenous opioids 47 menthol flavoring 47 medicinal nicotine 47 deviant behaviors 47 Adipex P 47 powerfully addictive drug 47 anti histamines 47 meth amphetamine 47 drug addiction 47 piperazines 47 adult neurogenesis 47 Chewing tobacco 47 Ritalin stimulant 47 compulsive tendencies 47 Naltrexone 47 opiate 47 salvia divinorum 47 prescription meds 47 AETD VIP abstain 47 Salvia divinorum 47 intoxicating beverages 47 Atypical antipsychotics 46 Antabuse 46 smoked snorted injected 46 Artificial sweeteners 46 LSD PCP 46 caffeinated sodas 46 nicotine inhaler 46 narcotic 46 phencyclidine 46 neurotransmitter imbalances 46 rohypnol 46 tricyclic antidepressant 46 opiate addictions 46 anxiolytics 46 Decongestants 46 atypical antipsychotic medications 46 Generic Meridia 46 Adderall Ritalin 46 reefer madness 46 Counterfeit cigarettes 46 Ayahuasca 46 antidepressants antipsychotics 46 female hormones estrogen 46 Smoking hookah 46 caffeinated soft drinks 46 pharmacological approaches 46 Percocet Percodan 46 frequent tanners 46 ecstasy MDMA 46 Cabergoline 46 PDUFA reauthorization 46 opioid oxycodone 46 serotonin reuptake inhibitors SSRIs 46 Compulsive hoarders 46 Hallucinogens 46 caffeinated beverages 46 chemosignals 46 melatonin receptors 46 addictive opiate 46 Inhalant abuse 46 sucrose fructose 46 Prozac Paxil 46 Anxiety disorders 46 Zoloft Paxil 46 methaqualone 46 tiagabine 46 Ritalin methylphenidate 46 risky behaviors 46 oxycotin 46 non nutritive sweeteners 46 pharmacological intervention 46 psychotic illnesses 46 cough syrups 46 Sleeping pills 46 endocrine disrupter 46 plant Artemisia annua 46 Methadone clinics 46 opioid misuse 46 psychoactive ingredient 46 bio accumulative 46 caffeine taurine 46 active ingredient tetrahydrocannabinol 46 diazepam Valium 46 acetaminophen aspirin 46 aspirin paracetamol 46 flavored alcoholic beverages 46 nitrite poppers 46 stimulant Ritalin 46 Phenylephrine 46 artificially sweetened sodas 46 sweetener xylitol 46 Antihistamines 46 Detox diets 46 Withdrawal symptoms 46 antidepressants SSRIs 46 hallucinogen 46 cola drinkers 46 snorted swallowed 46 Ritalin Prozac 46 galanin 46 zolpidem Ambien 46 intoxications 46 nonsteroidal anti inflammatories 46 smokable 46 psychotropic medicines 46 sedative hypnotics 46 CYP#E# gene 46 inhalant 46 acetaminophen Tylenol 46 treat nicotine addiction 46 Vicodin Oxycontin 46 OxyContin prescription painkiller 45 fluoxetine Prozac 45 intoxicating substance 45 Dimetapp Pediacare Robitussin 45 treat opiate addiction 45 cannabis ecstasy 45 phenylacetic acid 45 potent carcinogens 45 potencies 45 Novartis Ritalin 45 Laxatives 45 Controlled substances 45 Muscle relaxants 45 selective serotonin uptake 45 sedating antihistamines 45 steroid precursors 45 Darvocet Darvon 45 appetite suppressants 45 Herbal supplements 45 sedatives tranquilizers 45 pentazocine 45 Percodan 45 illicit brews 45 relaxants 45 warn Smokeless tobacco 45 OxyContin Vicodin 45 socially undesirable 45 varenicline Chantix 45 neuro toxin 45 Hillbilly Heroin 45 synthetic musks 45 smokeless nicotine 45 antidepression 45 Methylphenidate 45 freebase nicotine 45 altering substances 45 diethylpropion 45 Nalmefene 45 nicotine craving 45 cathinones 45 Percocet Oxycontin 45 opiate dependence 45 dimethyltryptamine 45 herbal concoctions 45 Fluoroquinolones 45 waterpipe tobacco smoking 45 self medicating 45 Tagamet 45 hallucinogenics 45 homoeopathic remedies 45 ephedrine pseudoephedrine 45 tobacco specific nitrosamines 45 paco 45 Neurological disorders 45 Rivotril 45 commercializes VIVITROL ® 45 inhalant abuse 45 Homeopathic medicines 45 induced neurotoxicity 45 painkiller acetaminophen 45 caffeine stimulant 45 antisocial behaviors 45 hypokalaemia 45 Wernicke Korsakoff syndrome 45 naturally occurring toxins 45 Psychotropic 45 endoxifen 45 hallucinogenic substances 45 smoked snorted swallowed 45 Prozac Zoloft Paxil 45 abortifacients 45 genetically predetermined 45 lysergic acid diethylamide LSD 45 psychoactive medications 45 cocaine opiates 45 Nora D. Volkow 45 chlorpromazine 45 Compulsive gambling 45 Benzodiazepine 45 anti convulsants 45 narcotic analgesics 45 hallucination inducing 45 CYP#A# inhibitors 45 Percocet OxyContin 45 aromatic compounds 45 nicotine gum patches 45 benzodiazepines 45 endocrine disrupting chemicals 45 Amphetamine 45 curing huts 45 Marinol 45 legalizing cannabis 45 ergogenic aids 45 Synthetic cannabinoids 45 barbituates 45 dopamine norepinephrine 45 Grapefruit juice 45 www.electroniccigarette#.com 45 nonmedically 45 caffeine guarana taurine 45 pharmacotherapies 45 herb salvia 45 Prozac fluoxetine 45 partial opioid agonist 45 Synthetic marijuana 45 mutagens 45 tabacco 45 NUCYNTA R 45 Cocaine Heroin 45 prenatal exposures 45 Exercise releases endorphins 45 methylparaben 45 Opioid dependence 44 analgesic effects 44 Adipex 44 glibenclamide 44 flunitrazepam 44 sweetened beverages 44 librium 44 patches lozenges 44 bismuth subsalicylate 44 Ritalin 44 inhibit CYP#A# 44 pentathol 44 butalbital 44 Xanax alprazolam 44 cannabinoids 44 monoamine oxidase inhibitors 44 opioids 44 oral NSAIDs 44 robo tripping 44 methampethamine 44 neurobiological mechanisms 44 Inorganic arsenic 44 Milk thistle 44 anti epileptics 44 GABA receptor 44 liver metabolizes 44 MAO inhibitor 44 oxycodone morphine 44 cannabis amphetamines 44 methylenedioxymethamphetamine MDMA 44 psychotropic drugs 44 Weaning ourselves 44 fermentable carbohydrates 44 cola drinks 44 naturally occurring substances 44 Decriminalization 44 noncaloric 44 paranoia hallucinations 44 zarda 44 propranolol Inderal 44 endocannabinoid system 44 dopamine agonist 44 activate AMPK 44 Harsher punishments 44 metabolization 44 nicotinic acetylcholine receptors 44 fattening foods 44 commonly prescribed antidepressants 44 relaxant 44 gabapentin Neurontin 44 Bingeing 44 OxyContin oxycodone 44 bupe 44 haloperidol Haldol 44 phenolphthalein 44 nicotine nasal spray 44 stimulant ADHD 44 opiate dependency 44 mint flavoring 44 Xanax XR 44 addicted 44 proteasome inhibitors 44 Theophylline 44 Campral 44 Tylox 44 psycho stimulants 44 Paxil Zoloft 44 phenethylamine 44 Adderal 44 Cough syrup 44 Ketamine 44 Zyprexa Risperdal 44 paroxetine Paxil 44 dietary supplements containing ephedrine 44 mouthwashes 44 phenanthrene 44 narcotic painkiller OxyContin 44 Yohimbine 44 Bath salts 44 benzyl acetone 44 antiseizure drugs 44 Personality disorders 44 fruit flavored cigarettes 44 Mellaril 44 glitazones 44 Ephedrine 44 Oxycontin Vicodin 44 Inhalant 44 Abusers crush 44 moist snuff chewing tobacco 44 Prof McKeganey 44 Snake venom 44 Rohypnol 44 CELEBRATE RECOVERY Bible 44 nonprescription medications 44 synthetic fragrances 44 Imipramine 44 reinforcers 44 tobacco 44 amyl nitrate 44 Palladone 44 yohimbine 44 patented botanical 44 Robo tripping 44 Stimulant 44 Saint Laurent Valentino 44 stimulant laxatives 44 neuropsychiatric diseases 44 gel sanitizers 44 neurotransmitters 44 Ecstasy LSD 44 naltrexone hydrochloride 44 injected snorted 44 dopamine receptors 44 Cox 2s 44 vaporized nicotine 44 stereotypy 44 Nitrosamines 44 glutamate receptors 44 indoor tanning beds 44 Coca leaf 44 bipolar Manji 44 pramipexole Mirapex 44 intoxicating fumes 44 undesirable behaviors 44 pthalates 44 crystal meth addicts 44 sugared drinks 44 Vitamin supplements 44 eat unhealthily 44 containing dextromethorphan 44 alcoholism 44 nicotine chewing gum 44 Endocannabinoids 44 dextromethorphan 44 Overindulgence 44 psychiatric disorders 44 Topiramate 44 SSRI antidepressant 44 nasal decongestant 44 PharmacoSurgery TM platform 44 atypical neuroleptics 44 carb blockers 44 psychotropic drug 44 impulsive behavior 44 constipating 44 Lester Grinspoon 44 CYP #A# 44 dopamine agonists 44 induced hallucinations 44 prescription psychotherapeutic 44 alchohol 44 biological predisposition 44 depressive moods 44 behaviors 44 herbal stimulants 44 Ionamin 44 perscription drugs 44 ibogaine 44 Risperdal Zyprexa 44 naturally occurring substance 44 Prescription medications 44 activity MAOA 44 Valproate 44 allopregnanolone 44 stimulant 44 sweetened soft drinks 44 flavored cigarillos 44 AETD abstain 44 alchol 44 salicylates 44 ashwagandha 44 Antacids 44 antidiarrheal 43 depressants 43 Sugary drinks 43 Premenstrual Dysphoric Disorder 43 prescription opioid painkillers 43 stimulant medications 43 dopamine pathways 43 pseudophedrine 43 victimless crimes 43 neurotoxic 43 dopamine D2 receptors 43 Vocci 43 MDMA ecstasy 43 racemic mixture 43 amino acid taurine 43 Halcion 43 Elavil 43 drinking caffeinated beverages 43 Therapeutic nicotine 43 oral antihistamines 43 reactive oxygen molecules 43 PGI2 43 Fatty foods 43 topiramate Topamax 43 addictive tendencies 43 opium morphine 43 neurotransmitter serotonin 43 prescription painkiller abuse 43 cravings 43 Legalizing marijuana 43 Dormicum 43 cheap soma 43 cough suppressants 43 negative externalities 43 Ativan Soma Dalmane Prexige 43 Pot growers 43 Ghodse 43 Cocaine 43 Generic Acomplia 43 addictive disorders 43 compulsivity 43 harmful substances 43 amino acid tryptophan 43 pimozide 43 antipsychotic medicines 43 opioid 43 Antipsychotic drugs 43 Puff puff puff 43 stimulant caffeine 43 freebase 43 McCargar bribed 43 ursodeoxycholic acid 43 Dextromethorphan 43 glycyrrhizin 43 amphetamines methamphetamines 43 neurotransmitter GABA 43 neuroleptic drugs 43 PCOD 43 Gum chewers 43 Imprinted genes 43 self medicates 43 nasal inhalers 43 Cannabinoids 43 environmental toxicants 43 hypochondriasis 43 decrease SPRYCEL plasma 43 Oxy Contin 43 Xanax Valium 43 dopamine receptor gene 43 hallucinogenic 43 cigarettes bidis 43 metabolizing enzymes 43 glycosides 43 Acetaminophen Tylenol 43 Sedative 43 Pethidine 43 protein tyrosine phosphatases 43 MAOIs 43 infused whipped cream 43 prescription drugs 43 Axid 43 Nardil 43 OTCBB AJGH leading 43 infectious autoimmune 43 alkaloid 43 Cannabinoid receptors 43 Avoid caffeine 43 depressant 43 Wellbutrin bupropion 43 MDMA Ecstasy 43 injectable naltrexone 43 nalmefene 43 fluorides 43 hormone DHEA 43 unhealthy behaviors 43 teratogens 43 #mg tablet [002] 43 endogenous cannabinoid 43 accidentally ingests 43 aspartame sweetened 43 Pictorial warnings 43 Cannabis sativa 43 cannabinoid 43 anticonvulsant medications 43 disinhibited 43 H2 receptor antagonists 43 Swedish snus 43 dextromethorphan cough suppressant 43 Flavored malt beverages 43 naturally occurring compounds 43 neuropsychiatric disorders 43 heroin methamphetamines 43 chewed wad 43 butorphanol 43 bingers 43 caffeine guarana 43 stimulate neurogenesis 43 levetiracetam Keppra 43 baclofen 43 signaling cascades 43 caffeine infused 43 odorless colorless tasteless 43 polyamines 43 blood thinner Warfarin 43 anticholinergic effects 43 Bulimics 43 anticonvulsant drugs 43 body metabolizes 43 decongestant pseudoephedrine 43 smoking cessation therapies 43 tonic clonic seizures 43 nonmedical purposes 43 Valium diazepam 43 pharmacological therapies 43 inhibitory neurotransmitters 43 Essential oils 43 Cotinine 43 Zyban bupropion 43 adrenal hormones 43 gamma aminobutyric acid 43 containing xylitol 43 neurotoxins 43 Acamprosate 43 Mexican DTOs 43 schizophrenia manic depression 43 hydrocodone oxycodone 43 jimson weed 43 stimulatory effects 43 ibuprofen acetaminophen 43 glutamate signaling 43 vaporizer accessories 43 tranquillizers 43 Triclosan 43 anti depressant Seroxat 43 ketamine hydrochloride 43 mescaline 43 salvia 43 Methodone 43 olfactory receptor cells 43 attentional bias 43 obesogenic environment 43 nicotine lozenge 43 Sororities antics spur 43 psychopathological disorders 43 daytime drowsiness 43 sugars fats 43 mouthwashes containing 43 main psychoactive substance 43 dopamine antagonists 43 hallucinations paranoia 43 antibiotic resistant germs 43 Relaxation techniques 43 inhibiting dopamine 43 blocking cannabinoid receptors 43 flavored tobacco 43 amyl nitrite 43 antidepressive 43 Psilocybin 43 herbal ingredients 43 codeine laced cough syrup 43 painkillers sedatives 43 colorectal carcinogenesis 43 sugary fatty 43 gastric juices 43 bath salts 43 adulterants 43 opiate painkillers 43 heroin addicts 43 rBGH milk 43 tobacco quitline 43 ethosuximide 43 Oxys 43 methylxanthine 43 psuedoephedrine 43 teratogen 43 antispasmodic 43 poisonous substances 43 Oxycodone prescription painkiller 43 highly addictive narcotic 43 monoamine oxidase 43 chlorinated compounds 43 khaini 43 neuroleptics 43 cigarette smoking 43 Phencyclidine PCP 43 primidone 43 snorted cocaine produces 43 Mirtazapine 43 cocaine ecstacy 43 unwanted teenage pregnancies 43 traumatic childhoods 43 oxycodone hydrocodone 43 anti depressant 43 degenerative neurological diseases 43 PharmacoSurgery ™ platform 43 suppresses appetite 43 oxycodone Percocet 43 Schizophrenics 43 meta cognitive 43 tricyclics 43 anandamide 43 tamoxifen metabolism 43 endogenous cannabinoids 43 betel quid 43 withdrawl symptoms 43 acid suppressing 42 Endorphins 42 monoamine neurotransmitters 42 Ovide Pomerleau 42 Opioid addiction 42 chemical compounds 42 tricyclic antidepressants 42 sugary foods 42 Primary biliary cirrhosis 42 isoflavone supplements 42 malate 42 destructive tendencies 42 belladonna 42 endocannabinoids 42 sugared beverages 42 Heroin addicts 42 Postnatal depression 42 endocrine disrupting chemicals EDCs 42 Alcoholic drinks 42 Ecstasy MDMA 42 Suicidal thoughts 42 GlaxoSmithKline Plc Paxil 42 Percocet Oxycontin Vicodin 42 estrogenic 42 diclofenac Voltaren 42 resemble asthma inhalers 42 sensory cues 42 androgen hormones 42 magic mushrooms 42 acid reducers 42 induced psychosis 42 Bach Flower Essences 42 depakote 42 norpseudoephedrine 42 inhalant abusers 42 glamourisation 42 Mifepristone 42 Drug Abuse Counselor 42 crystal meth 42 crystal meth ecstasy 42 Schuckit 42 DRUGS AND ALCOHOL 42 nicotinic receptors 42 manufactures VIVITROL ® 42 druglike 42 premenstrual syndrome PMS 42 metabolises 42 glutamates 42 nutritive substances 42 Vicodin Valium 42 l cysteine 42 decriminalized marijuana 42 Wheelchair accessible valet parking 42 CB1 receptors 42 Lofexidine 42 snake venoms 42 Pyrethroids 42 carcinogens mutagens 42 banning menthol cigarettes 42 drugs cough suppressant 42 Overindulging 42 rat poisons 42 VigRX Plus 42 Oxycontin 42 endocrine disrupters 42 flatulent Fatties franchise 42 excessive urination 42 Cigar smokers 42 mitochondrial decay 42 Stressful situations 42 ogogoro 42 oxycodone painkiller 42 Anafranil 42 Prilosec omeprazole 42 adenosine receptors 42 papain 42 sedative midazolam 42 harmfulness 42 fatty sugary 42 nicotine lozenges 42 refined sugars 42 untreated ADHD 42 Indoor tanning 42 polyunsaturated vegetable oils 42 CB2 receptor 42 caffiene 42 antiepileptics 42 meth cookers 42 intensely pleasurable 42 Benzocaine 42 potent analgesic 42 serotonin neurotransmitter 42 Hoodia diet 42 addicting 42 Crack cocaine 42 contains theobromine 42 OxyContin 42 NUCYNTA TM 42 Oxycontin Percocet 42 paracetamol ibuprofen 42 NuMimetic TM 42 Methylmercury 42 Horny Goat Weed 42 diphenhydramine Benadryl 42 paranoid hallucinations 42 newer antidepressants 42 morphine fentanyl 42 hallucinogenic drugs 42 Benzoyl peroxide 42 finely milled tobacco 42 Methamphetamine 42 Anthenelli 42 sugary snacks 42 methadone synthetic opiate 42 erectile dysfunctions 42 ibuprofen Motrin 42 Tylenol acetaminophen 42 Meth cooks 42 Recovering alcoholics 42 sugarless gums 42 cigarettes 42 antiepileptic drugs AEDs 42 opiate painkiller 42 oxazepam 42 synthetic narcotic 42 Nutritionists warn 42 GHB gamma hydroxybutyrate 42 nonstimulant 42 specialty breath freshening 42 induce drowsiness 42 aerodigestive tract 42 carcinogenic compounds 42 cognitive enhancer 42 opioid fentanyl 42 Flame retardants 42 Alcohol