butorphanol

noun 0.690

hydromorphone

noun 0.620

ethylmorphine

noun 0.606

hydrocodone

noun 0.596

diprenorphine

noun 0.593

oxycodone

noun 0.586

morphine

noun 0.579

tramadol

noun 0.575

opioid

noun 0.569

levonorgestrel

noun 0.568

diacetylmorphine

noun 0.557

naloxone

noun 0.557

levofloxacin

noun 0.551

levothyroxine

noun 0.549

meperidine

noun 0.543

remifentanil

noun 0.543

pentazocine

noun 0.542

dextromethorphan

noun 0.542

methadone

noun 0.539

alvimopan

noun 0.533

oxycontin

noun 0.531

haloperidol

noun 0.530

nonnarcotic

noun 0.529

opiate

noun 0.529

diamorphine

noun 0.528

ethchlorvynol

noun 0.525

melphalan

noun 0.522

enkephalin

noun 0.522

dextropropoxyphene

noun 0.521

leucovorin

noun 0.518

dihydrocodeine

noun 0.515

prodynorphin

noun 0.514

fentanyl

noun 0.514

heroin

noun 0.514

fluphenazine

noun 0.512

pethidine

noun 0.511

lorazepam

noun 0.509

codeine

noun 0.508

orphan drug

noun 0.506

phenobarbitone

noun 0.505

narcotic

noun 0.504

midodrine

noun 0.504

ketorolac

noun 0.503

levocabastine

noun 0.502

phenobarbital

noun 0.502

tolvaptan

noun 0.502

lomefloxacin

noun 0.501