levorphanol

noun 0.690

butalbital

noun 0.643

diprenorphine

noun 0.642

tramadol

noun 0.630

phenylbutazone

noun 0.623

oxyphenbutazone

noun 0.611

pentazocine

noun 0.606

tolbutamide

noun 0.606

oxycodone

noun 0.604

butyrophenone

noun 0.598

hydromorphone

noun 0.597

opioid

noun 0.591

hydrocodone

noun 0.591

fentanyl

noun 0.586

terbutaline

noun 0.582

methadone

noun 0.582

zolazepam

noun 0.580

butanediol

noun 0.569

remifentanil

noun 0.567

naloxone

noun 0.566

budesonide

noun 0.565

albuterol

noun 0.564

butylphenol

noun 0.563

piperonyl butoxide

noun 0.562

oxybutynin

noun 0.562

butanol

noun 0.561

midazolam

noun 0.558

ibutilide

noun 0.556

butachlor

noun 0.554

bucindolol

noun 0.553

pentobarbital

noun 0.553

thiopental

noun 0.552

morphine

noun 0.551

formoterol

noun 0.551

opiate

noun 0.551

ketorolac

noun 0.549

bute

noun 0.549

propoxur

noun 0.548

pirbuterol

noun 0.547

pethidine

noun 0.544

phenobarbital

noun 0.543

meperidine

noun 0.542

benzofuran

noun 0.542

pentothal

noun 0.538

oxycontin

noun 0.538

busulfan

noun 0.536

diacetylmorphine

noun 0.533

bromobutane

noun 0.529

monobutyl

noun 0.528

phenobarbitone

noun 0.528

ketamine

noun 0.528

ethylmorphine

noun 0.527

butyl

noun 0.527

codeine

noun 0.527

butanal

noun 0.526

butanone

noun 0.526

dexmedetomidine

noun 0.525

polybutadiene

noun 0.524

barbiturate

noun 0.523

butane

noun 0.523

propofol

noun 0.523

topiramate

noun 0.522

dihydrocodeine

noun 0.522

secobarbital

noun 0.521

bosentan

noun 0.519

benzphetamine

noun 0.518

butylated hydroxytoluene

noun 0.518

fenoterol

noun 0.517

dobutamine

noun 0.517

hexobarbital

noun 0.515

dibutyl

noun 0.513

narcotic

noun 0.513

benzodiazepine

noun 0.513

sodium thiopental

noun 0.512

lorazepam

noun 0.512

diamorphine

noun 0.511

dextromethorphan

noun 0.511

flurbiprofen

noun 0.510

haloperidol

noun 0.510

triazolam

noun 0.510

buprofezin

noun 0.509

nonnarcotic

noun 0.509

dronabinol

noun 0.509

bisoprolol

noun 0.509

etomidate

noun 0.508

atipamezole

noun 0.508

t-butyl

noun 0.507

etodolac

noun 0.506

polybutene

noun 0.506

naltrexone

noun 0.505

dextropropoxyphene

noun 0.505

butylbenzene

noun 0.505

sibutramine

noun 0.503

stanozolol

noun 0.503

flunitrazepam

noun 0.503

biobutanol

noun 0.503

ethchlorvynol

noun 0.502

benzothiadiazole

noun 0.501

bicalutamide

noun 0.501

acetaminophen

noun 0.501