bromadoline
An opioid analgesic.

bucetin
A pharmaceutical drug that acts as an analgesic and antipyretic, withdrawn in the 1980s due to renal toxicity.

bucolome
A barbiturate derivative with analgesic and anti-inflammatory effects.

butinazocine
An opioid analgesic of the benzomorphan family, never marketed.

butorphanol
A synthetic analgesic and antitussive opioid drug (trademark Stadol) administered in the form of its tartrate C₂₁H₂₉NO₂·C₄H₆O₆ as a nasal spray or by injection especially for the relief of pain.

carbamazepine
A synthetic compound of the benzodiazepine class, used as an anticonvulsant and analgesic drug.

carbamazepines
plural of carbamazepine

carbasalate
An analgesic, antipyretic, and anti-inflammatory drug.

carbazocine
An opioid analgesic of the benzomorphan family, never marketed.

carbemazepine
Misspelling of carbamazepine.

carfentanil
A narcotic painkiller that is four orders of magnitude more potent than morphine, used for tranquilizing large animals and abused as a recreational drug.

carfentanyl
Alternative spelling of carfentanil.

carmazapine
Misspelling of carbamazepine.

cinchophen
An analgesic drug used to treat gout in animals (and, until the 1930s, in humans, when it was found to cause liver damage).

ciprefadol
An opioid analgesic derived from isoquinoline.

ciramadol
A particular narcotic painkiller.

cizolirtine
An analgesic drug.

clonitazene
A particular narcotic painkiller.

coanalgesic
An analgesic that also has an adjuvant property

coanalgesics
plural of coanalgesic

cogazocine
An opioid analgesic of the benzomorphan family.

conorfone
An opioid analgesic, an analogue of hydrocodone substituted with an 8-ethyl group and an N-cyclopropylmethyl group.

counternarcotics
The enforcement of laws against the use or distribution of narcotics

crotalphine
An analgesic peptide in the venom of the South American rattlesnake Crotalus durissus

crotetamide
An analgesic drug.

cuprofen
A mixture of codeine and ibuprofen used as an analgesic

decursinol
An analgesic coumarin (3S)-3-hydroxy-2,2-dimethyl-3,4-dihydropyrano[3,2-g]chromen-8-one present in the roots of Angelica gigas

deltrophin
Misspelling of deltorphin.

demmie
Demerol, especially when used as a recreational drug.

demmy
Alternative form of damme (“damn me”).

desmetramadol
An opioid analgesic and the main active metabolite of tramadol.

desomorphine
An opiate analogue derived from morphine, with sedative and analgesic effects.

dexmedetomidine
An aromatic imidazole derivative that is used as a sedative and analgesic

dexproxibutene
An analgesic drug.

dextromethorphan
An opioid that is used as an antitussive drug, found in many over-the-counter cold and cough preparations, and as an NMDA blocker used to treat pseudobulbar affect.

dextromoramide
A particular narcotic painkiller.

dextropropoxyphene
A particular narcotic painkiller.

dezocine
A particular narcotic painkiller.

diacetyldihydromorphine
A particular narcotic painkiller.

diampromide
A particular narcotic painkiller.

diclofenac
A painkiller having the chemical formula C₁₄H₁₁Cl₂NO₂

diethylthiambutene
A particular narcotic painkiller.

difelikefalin
An analgesic opioid peptide used to treat itching.

difenoxin
A particular narcotic painkiller.

dihydrocodeine
A particular narcotic painkiller.

dihydrocodeines
plural of dihydrocodeine

dihydroetorphine
A particular narcotic painkiller.

dihydromorphine
A particular narcotic painkiller.

dihydromorphines
plural of dihydromorphine

dihydromorphinone
Hydromorphone.

dimenoxadol
A particular narcotic painkiller.

dimepheptanol
A particular narcotic painkiller.

dimethylthiambutene
A particular narcotic painkiller.

dimorphone
Hydromorphone.

diprenorphine
An opioid antagonist used to reverse the effects of superpotent opioid analgesics, such as etorphine and carfentanil, that are used for tranquilizing large animals in veterinary medicine.

dipropanoylmorphine
A particular narcotic painkiller.

diproqualone
A synthetic analogue of methaqualone with sedative, anxiolytic, antihistamine and analgesic properties.

dipyrocetyl
A pharmaceutical drug used as an analgesic and antipyretic.

dipyrone
metamizole

drosotoxin
An analgesic peptide that is a selective inhibitor of tetrodotoxin-resistant sodium channels

enadoline
A drug which acts as a highly selective κ-opioid agonist, rejected as an analgesic because of its dysphoric effects.

eptazocine
An opioid analgesic.

ethenzamide
An analgesic and anti-inflammatory drug.

ethoheptazine
A particular narcotic painkiller.

ethylmethylthiambutene
An opioid painkiller, N-ethyl-N-methyl-4,4-dithiophen-2-yl-but-3-en-2-amine, that has a narcotic effect

etonitazene
A potent synthetic opioid analgesic of the nitazene group, used as an illicit drug.

etoricoxib
A synthetic, nonsteroidal anti-inflammatory drug with antipyretic, analgesic, and potential antineoplastic properties.

etorphine
A particular narcotic painkiller.

exalgin
A benzene derivative allied to phenacetin, used as an analgesic and antipyretic.

faxeladol
A particular narcotic painkiller.

fentanil
Alternative spelling of fentanyl; which is the international non-proprietary name.

fentanyl
A synthetic opioid narcotic analgesic, C₂₂H₂₈N₂O, with pharmacological action similar to morphine that is administered transdermally as a skin patch and in the form of its citrate, C₂₂H₂₈N₂O·C₆H₈O₇, is administered orally or parenterally (as by intravenous or epidural injection); N-phenyl-N-[1-(2-phenylethyl)piperidin-4-yl]propanamide.

fentanyls
plural of fentanyl

fenty
Fentanyl.

florifenine
An analgesic drug.

flumexine
Synonym of flunixin.

flunixin
A nonsteroidal anti-inflammatory drug, analgesic, and antipyretic used in horses.

flunixine
Alternative form of flunixin.

fluradoline
An analgesic drug.

furethidine
A 4-phenylpiperidine derivative that is related to the opioid analgesic drug pethidine.

gemazocine
An opioid antagonist of the benzomorphan family, never marketed.

helmitol
Hexamethylenetetramine anhydromethylene citrate, an analgesic and urinary antiseptic.

herkinorin
A particular narcotic painkiller.

homprenorphine
An opioid analgesic of the thebaine series.

hydrocodone
A habit-forming compound that is derived from codeine and is administered in the form of its bitartrate C₁₈H₂₁NO₃·C₄H₆O₆ usually in combination with other drugs (as acetaminophen) as an analgesic or antitussive.

hydrocodones
plural of hydrocodone

hydromorphone
A synthetic narcotic analgesic, (4,5 alpha-epoxy-3-hydroxy-17-methyl morphinan-6-one), similar to morphine and heroin. It is used for moderate to severe pain under the trade name Dilaudid.

hydroxypethidine
A particular narcotic painkiller.

hydroxyzine
A first-generation antihistamine of the piperazine class, used as an antihistamine, antiemetic, anxiolytic, and weak analgesic.

hydroxyzines
plural of hydroxyzine

ibazocine
An opioid analgesic.

ibu
ibuprofen

ibuprofen
A synthetic compound used widely as an analgesic and anti-inflammatory drug.

ibuprofened
simple past and past participle of ibuprofen

ibuprofening
present participle of ibuprofen

ibuprofens
plural of ibuprofen

isonipecaine
The opioid analgesic drug pethidine.

isoxepac
A non-steroidal anti-inflammatory drug with analgesic activity. It is also used as an intermediate in the synthesis of olopatadine hydrochloride.

ketamin
Alternative form of ketamine.

ketamine
A synthetic compound used as a dissociative anesthetic and analgesic drug and also recreationally as a hallucinogen.

ketamines
plural of ketamine

ketazocine
A cyclazocine derivative used in opioid receptor research, causing a decrease in pain sensations accompanied by paranoia and hallucinations.

ketobemidone
A particular narcotic painkiller.

ketocyclazocine
Ketazocine.