dihydrocodeine

noun 0.745

hydrocodone

noun 0.716

oxycodone

noun 0.687

morphine

noun 0.667

cough syrup

noun 0.631

tramadol

noun 0.621

cocaine

noun 0.615

opiate

noun 0.611

opioid

noun 0.602

pethidine

noun 0.597

opium

noun 0.596

diacetylmorphine

noun 0.595

acetaminophen

noun 0.595

methadone

noun 0.595

oxycontin

noun 0.590

coke

noun 0.589

noscapine

noun 0.587

quinine

noun 0.585

dextromethorphan

noun 0.582

dextropropoxyphene

noun 0.580

ethylmorphine

noun 0.578

narcotic

noun 0.577

hydromorphone

noun 0.576

paracetamol

noun 0.576

diamorphine

noun 0.571

cordycepin

noun 0.568

colchicine

noun 0.566

guaifenesin

noun 0.566

laudanum

noun 0.563

barbiturate

noun 0.562

heroin

noun 0.560

antitussive

noun 0.560

painkiller

noun 0.560

caffeine

noun 0.558

controlled substance

noun 0.558

quinidine

noun 0.557

meperidine

noun 0.557

coxib

noun 0.555

chlorodyne

noun 0.555

phenobarbitone

noun 0.553

pentazocine

noun 0.553

coumadin

noun 0.551

coumarin

noun 0.548

cyanide

noun 0.547

cortisone

noun 0.542

drug

noun 0.540

nonnarcotic

noun 0.540

theobromine

noun 0.538

pseudoephedrine

noun 0.538

phenobarbital

noun 0.538

aspirin

noun 0.535

diphenhydramine

noun 0.534

prednisone

noun 0.533

fentanyl

noun 0.530

coca

noun 0.529

chlorphenamine

noun 0.527

butorphanol

noun 0.527

carbamazepine

noun 0.526

crack cocaine

noun 0.525

theophylline

noun 0.524

cannabidiol

noun 0.522

procaine

noun 0.521

secobarbital

noun 0.521

syrup

noun 0.520

pentobarbital

noun 0.519

cough

noun 0.518

pheniramine

noun 0.518

acetanilide

noun 0.516

ketamine

noun 0.516

decoction

noun 0.515

phenoxide

noun 0.514

warfarin

noun 0.513

zopiclone

noun 0.513

cyproterone

noun 0.512

cinchonine

noun 0.511

medication

noun 0.511

sedative

noun 0.510

clopidogrel

noun 0.509

analgesic

noun 0.509

lidocaine

noun 0.509

enkephalin

noun 0.509

ibuprofen

noun 0.509

prednisolone

noun 0.508

propofol

noun 0.508

benzodiazepine

noun 0.508

phenol

noun 0.508

kratom

noun 0.508

cocoa

noun 0.508

cannabinoid

noun 0.508

camphor

noun 0.508

levorphanol

noun 0.508

cannabis

noun 0.508

cytosine

noun 0.507

hydrocortisone

noun 0.507

diprenorphine

noun 0.507

prescription

noun 0.507

benzocaine

noun 0.507

code

noun 0.506

cognac

noun 0.506

naloxone

noun 0.505