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A Comprehensive Generic Drug Naming Resource


Deciphering generic drug names using the World Health Organization international nonproprietary names system

Drugs have several types of names, as described in How are drugs named.

Briefly, a drug’s tradename (E.g. Advil, Nexium, or Herceptin) is owned by a specific company and describes that company’s version of the drug (just as Coca Cola and Pepsi are tradenames for cola products). The ‘generic’ name for a drug (Advil’s generic name is ibuprophen; Nexium is esomeprazole, and; Herceptin is trastuzumab).

The generic names for drugs are essential, because they provide standardization, making it possible to easily identify a drug which may be sold by many different brand names, or branded medicines which contain more than one drug. Generic names stem from a global standard, which has been coordinated by the World Health Organization (WHO) since 1953.

The names issued by the WHO are called international nonproprietary names (INNs), and they are issued in English, Latin, French, Russian, Spanish, Arabic, and Chinese. While the roots of the INNs are often similar between languages there tend to be subtle spelling or pronunciation differences. For example the English INN paracetamol is paracetamolum in latin, paracétamol in French, and парацетамол in Russian.

Each drug’s has a unique INN is, but the composition of the INN is designed so that similar drug INNS contain common word stems. For example, the -profen in ibuprofen indicates “anti-inflammatory agents,” the -prazole in esomeprazole indicates “antiulcer, benzimidazole derivatives,” and the -mab in trastuzumab indicates that the drug is a monoclonal antibody.

The table below presents a list of generic INN drug name stems used by the WHO.

A comprehensive list of generic INN drug naming stems

-abine (see -arabine and -citabine)arabinofuranosyl derivatives; nucleosides antiviral or antineoplastic agents, cytarabine or azacitidine derivatives
-acanti-inflammatory agents, ibufenac derivatives
-acetam (see -racetam)amide type nootrope agents, piracetam derivatives
-actidesynthetic polypeptide with a corticotropin-like action
-adomanalgesics, tifluadom derivatives
-afenoneantiarrhythmics, propafenone derivatives
-afilinhibitors of phosphodiesterase PDE5 with vasodilator action
-aj-antiarrhythmics, ajmaline derivatives
-aldrateantacids, aluminium salts
-alol (see -olol)aromatic ring related to –olols
-alox (see -ox)antacids, aluminium derivatives
-amivir (see vir)neuraminidase inhibitors
-ampanelantagonists of the ionotropic non-NMDA (N-methyl-D-aspartate) glutamate receptors (Namely the AMPA (amino-hydroxymethyl-isoxazole-propionic acid) and/or KA (kainite antagonist) receptors)
andrsteroids, androgens
-anibangiogenesis inhibitors
-anserinserotonin receptor antagonists (mostly 5-HT2)
-antroneantineoplastics; anthraquinone derivatives
-apine (see -pine)tricyclic compounds
-apt-aptamers, classical and mirror ones
-(ar)abinearabinofuranosyl derivatives
-aritantiarthritic substances, acting like clobuzarit and lobenzarit, (mechanism different from anti-inflammatory type substances, e.g. -fenamates or – profens)
-arolanticoagulants, dicoumarol derivatives
-arotenearotinoid derivatives
arte-antimalarial agents, artemisinin related compounds
-astantiasthmatics or antiallergics, not acting primarily as antihistaminics
-asvir (see –vir)antivirals, Hepatitis C Virus (HCV) NS5A inhibitors
-azam (see -azepam)diazepam derivatives
-azenilbenzodiazepine receptor antagonists/agonists (benzodiazepine derivatives)
-azepamdiazepam derivatives
-azepidecholecystokinin receptor antagonists, benzodiazepine derivatives
-azocinenarcotic antagonists/agonists related to 6,7-benzomorphan
-azolam (see -azepam)diazepam derivatives
-azolineantihistaminics or local vasoconstrictors, antazoline derivatives
-azone (see -buzone)anti-inflammatory analgesics, phenylbutazone derivatives
-azosinantihypertensive substances, prazosin derivatives
-bacept (see -cept)B-cell activating factor receptors
-bactamβ-lactamase inhibitors
-bamatetranquillizers, propanediol and pentanediol derivatives
barbhypnotics, barbituric acid derivatives
-begronβ3-adrenoreceptor agonists
-benakin (see -kin)interleukin-1 analogues and derivatives
-bendan (see -dan)cardiac stimulants, pimobendan derivatives
-bendazoleanthelminthics, tiabendazole derivatives
-bercept (see -cept)target: VEGF receptors
-bermin (see -ermin)vascular endothelial growth factors
-bersatanticonvulsants, benzoylamino-benzpyran derivatives
-betasol (see pred)prednisone and prednisolone derivatives
bolanabolic steroids
-bradinebradycardic agents
-brate (see -fibrate)clofibrate derivatives
-bufennon-steroidal anti-inflammatory agents, arylbutanoic acid derivatives
-bulinantineoplastics; mitotic inhibitor, tubulin binder
-butazone (see -buzone)anti-inflammatory analgesics, phenylbutazone derivatives
-buvir (see vir)RNA polymerase (NS5B) inhibitors
-buzoneanti-inflammatory analgesics, phenylbutazone derivatives
-cainelocal anaesthetics
-cain-class I antiarrhythmics, procainamide and lidocaine derivatives
calcivitamin D analogues/derivatives
-caponecatechol-O-methyltransferase (COMT) inhibitors
carbefantibiotics, carbacephem derivatives
-carnil (see -azenil)benzodiazepine receptor antagonists/agonists (carboline derivatives)
-castat (see -stat)dopamine-hydroxylase inhibitors
-cavir (see vir)carbocyclic nucleosides
cef-antibiotics, cefalosporanic acid derivatives
cell-/cel-cellulose derivatives
-celcell therapy products
cell-ate (see cell-/cel-)cellulose ester derivatives for substances containing acidic residues
-cellose (see cell-/cel-)cellulose ether derivatives
-ceptreceptor molecules, native or modified (a preceding infix should designate the target)
-cichepatoprotective substances with a carboxylic acid group
-ciclibcyclin dependant kinase inhibitors
-ciclovir (see vir)antivirals, bicyclic heterocycles compounds
-cidinnaturally occurring antibiotics (undefined group)
-ciguatguanylate cyclase activators and stimulators
-cillide (see -cillin)antibiotics, 6-aminopenicillanic acid derivatives
-cillinantibiotics, 6-aminopenicillanic acid derivatives
-cillinam (see -cillin)santibiotics, 6-aminopenicillanic acid derivatives
-cilpine (see -pine)tricyclic compounds
-cisteine (see -steine)mucolytics, other than bromhexine derivatives
-citabinenucleosides antiviral or antineoplastic agents, cytarabine or azacitidine derivatives
-citinib (see –tinib)Janus kinase inhibitors, antineoplastics
-clidine/-clidiniummuscarinic receptor agonists/antagonists
-clonehypnotic tranquillizers
-cocept (see -cept)complement receptors
-cogblood coagulation factors
-coginblood coagulation cascade inhibitors
-conazolesystemic antifungal agents, miconazole derivatives
cortcorticosteroids, except prednisolone derivatives
-coxibselective cyclo-oxygenase inhibitors
-crinatdiuretics, etacrynic acid derivatives
-crineacridine derivatives
-cromilantiallergics, cromoglicic acid derivatives
-curium (see -ium)curare-like substances
-cyclineantibiotics, protein-synthesis inhibitors, tetracycline derivatives
-dancardiac stimulants, pimobendan derivatives
-dapsoneantimycobacterials, diaminodiphenylsulfone derivatives
-decakin (see -kin)interleukin-10 analogues and derivatives
-degibSMO receptor antagonists
-denosonadenosine A receptor agonists
-dermin (see -ermin)epidermal growth factors
-dilol (see -dil)vasodilators
-dipinecalcium channel blockers, nifedipine derivatives
-dismase (see -ase)enzymes with superoxide dismutase activity, see -ase item V
-distim (see -stim)combination of two different types of colony stimulating factors
-dodekin (see -kin)interleukin-12 analogues and derivatives
-dopadopamine receptor agonists, dopamine derivatives, used as antiparkinsonism/prolactin inhibitors
-dox (see -ox/-alox)antibacterials, quinazoline dioxide derivatives
-dotinsynthetic derivatives of dolastatin series
-dotril (see –tril/trilat)endopeptidase inhibitors
-dox (see –ox/-alox)antacisa, aluminium derivatives (see also -aldrate)
-dralazineantihypertensives, hydrazinephthalazine derivatives
-dronic acidcalcium metabolism regulator, pharmaceutical aid
-dutant (see -tant)neurokinin NK2 receptor antagonist
-dyl (see -dil)vasodilators
-ectinantiparasitics, ivermectin derivatives
-elestat (see -stat)elastase inhibitors
-elvekin (see -kin)interleukin-11 analogues and derivatives
-emcinalerythromycin derivatives lacking antibiotic activity, motilin agonists
-enicokin (see -kin)interleukin-21 human analogues and derivatives
-entanendothelin receptor antagonists
(-)eptacog (see -cog)blood coagulation VII
ergergot alkaloid derivatives
-eridineanalgesics, pethidine derivatives
-ermingrowth factors
-etanide (see -anide)diuretics, piretanide derivatives
-ethidine (see -eridine)analgesics, pethidine derivatives
-exakin (see -kin)interleukin-6 analogues and derivatives
-exinemucolytic, bromhexine derivatives
-farcept (see -cept)subgroup of interferon receptors
-fenamate (see -fenamic acid)“fenamic acid” derivatives
-fenacinmuscarinic receptor antagonists
-fenamicacid anti-inflammatory, anthranilic acid derivatives
-fenindiagnostic aids; (phenylcarbamoyl)methyl iminodiacetic acid derivatives
-fenineanalgesics, glafenine derivatives (subgroup of fenamic acid group)
-fensinenorepinephrine, serotonin, dopamine reuptake inhibitors
-fentanilopioid receptor agonists, analgesics, fentanyl derivatives
-fentrineinhibitors of phosphodiesterases
-fermin (see -ermin)fibroblast growth factors
-fibanfibrinogen receptor antagonists (glycoprotein IIb/IIIa receptor antagonists)
-fibrateclofibrate derivatives
-filermin (see -ermin)leukemia-inhibiting factor
-flapon5-lipoxygenase-activating protein (FLAP) inhibitor
-fluranehalogenated compounds used as general inhalation anaesthetics
-forminantihyperglycaemics, phenformin derivatives
fosinsecticides, anthelminthics, pesticides etc., phosphorous derivatives
-fosfamide (see -fos)alkylating agents of the cyclophosphamide group
-fosine (see -fos)cytostatic
-fovir (see vir)phosphonic acid derivatives
-fradilcalcium channel blockers acting as vasodilators
-frine (see -drine)sympathomimetic, phenethyl derivatives
-funginantifungal antibiotics
-fyllineN-methylated xanthine derivatives
gabgabamimetic agents
gado-diagnostic agents, gadolinium derivatives
-gatranthrombin inhibitor, antithrombotic agent
-genegene therapy products
geststeroids, progestogens
-gestr-(see estr) estrogens
-gilinemonoamine oxydase (MAO)-inhibitors type B
-gillinantibiotics produced by Aspergillus strains
-gliflozin (see gli)sodium glucose co-transporter inhibitors, phlorizin derivatives
-gliptin (see gli)dipeptidyl aminopeptidase–IV inhibitors
-glitazar (see gli)peroxisome proliferator activating receptor-γ (PPAR-γ) agonists
-glitazone (see gli)peroxisome proliferator activating receptor-γ (PPAR-γ) agonists, thiazolidinedione derivatives
-glumidecholecystokinin (CCK) antagonists, antiulcer, anxiolytic agent
-glurantmetabotropic glutamate receptor antagonists / negative allosteric modulators
-glutide (see -tide)Glucagon-Like Peptide (GLP) analogues
-golidedopamine receptor agonists, ergoline derivatives
-gosivir (see vir)glucoside inhibitors
-gramostim (see -stim)granulocyte macrophage colony stimulating factor (GM-CSF) types substances
-grastim (see -stim)granulocyte colony stimulating factor (G-CSF) type substances
-grel-/-grelplatelet aggregation inhibitors
guan-antihypertensives, guanidine derivatives
-ibine (see -ribine)ribofuranyl-derivatives of the “pyrazofurin” type
-icamanti-inflammatory, isoxicam derivatives
-ifeneantiestrogens or estrogen receptor modulators, clomifene and tamoxifen derivatives
-igetide (see -tide)peptides and glycopeptides
-ilideclass III antiarrhythmics, sematilide derivatives
-imibeantihyperlipidaemics, acyl CoA: cholesterol acyltransferase (ACAT) inhibitors
-imodimmunomodulators, both stimulant/suppressive and stimulant
-imusimmunosuppressants (other than antineoplastics)
-inealkaloids and organic bases
-inostat (see stat)histone deacetylase inhibitors
io-iodine-containing contrast media
iod-/-io-iodine-containing compounds other than contrast media
-irudinthrombin inhibitors, hirudin derivatives
-isanthistamine H3 receptor antagonists
-isomideclass I antiarrhythmics, disopyramide derivatives
-iumquaternary ammonium compounds
-izine (-yzine)diphenylmethyl piperazine derivatives
-kacinantibiotics, kanamycin and bekanamycin derivatives (obtained from Streptomyces kanamyceticus)
-kalantpotassium channel blockers
-kalimpotassium channel activators, antihypertensive
-kef-enkephalin agonists
-kininterleukin type substances
-ki(n)- (see -mab)target: interleukin
-kinra (see -kin)interleukin receptor antagonists
-kirenrenin inhibitors
-lefacept (see -cept)lymphocyte function-associated antigen 3 receptors
-leukin (see -kin)interleukin-2 analogues and derivatives
-lisibphosphatidylinositol 3-kinase inhibitors, antineoplastics
-listat (see –stat)gastrointestinal lipase inhibitors
-lubantleukotriene B4 receptor antagonist
-lukast (see –ast)leukotriene receptor antagonists
-lutamidenon-steroid antiandrogens
-lutril (see –tril/trilat)endopeptidase inhibitors
-mabmonoclonal antibodies
-mantadineadamantane derivatives
-mantine (see -mantadine)adamantane derivatives
-mantone (see -mantadine)adamantane derivatives
-mapimod (see -imod)mitogen-activated protein (MAP) kinase inhibitors
-mastat (see -stat)matrix metalloproteinase inhibitors
-melinecholinergic agents (muscarine receptor agonists/partial antagonists used in the treatment of Alzheimer’s disease)
mer-/-mermercury-containing drugs, antimicrobial or diuretic
-mesinesigma receptor ligands
-mestanearomatase inhibitors
-metacinanti-inflammatory, indometacin derivatives
-met(h)asone (see pred)prednisone and prednisolone derivatives
-metinib (see –tinib)MEK (MAPK kinase) tyrosine kinase inhibitors
-micinaminoglycosides, antibiotics obtained from various Micromonospora
-mifene (see -ifene)antiestrogens, clomifene and tamoxifen derivatives
-milast (see -ast)phosphodiesterase IV (PDE IV) inhibitors
mito-antineoplastics, nucleotoxic agents
-monammonobactam antibiotics
-morelin (see -relin)growth hormone release-stimulating peptides
-mostat (see -stat)proteolytic enzyme inhibitors
-mostim (see -stim)macrophage stimulating factors (M-CSF) type substances
-motide (see -tide)immunological agents for active immunization
-motineantivirals, quinoline derivatives
-moxinmonoamine oxidase inhibitors, hydrazine derivatives
-mulinantibacterials, pleuromulin derivatives
-mustineantineoplastic, alkylating agents, (β-chloroethyl)amine derivatives
-mycinantibiotics, produced by Streptomyces strains (see also -kacin)
nabcannabinoid receptors agonists
-nabantcannabinoid receptors antagonists
-nacept (see -cept)interleukin-1 receptors
-nakin (see -kin)interleukin-1 analogues and derivatives
-nakinra (see -kin)interleukin-1 receptor antagonists
nal-opioid receptor antagonists/agonists related to normorphine
-naritide (see -tide)peptides and glycopeptides
-navir(see vir) Human Immunodeficiency Virus (HIV) protease inhibitors
-nepagprostaglandins receptors agonists, non-prostanoids
-nermin (see -ermin)tumour necrosis factor
-nercept (see -cept)tumour necrosis factor receptors
-nertant (see -tant)neurotensin antagonists
-netant (see -tant)neurokinin NK3 receptor antagonists
-nicate (see nico-)antihypercholesterolaemic and/or vasodilating nicotinic acid esters
-niclinenicotinic acetylcholine receptor partial agonists / agonists
nico-/nic-/ni-nicotinic acid or nicotinoyl alcohol derivatives
-nidazoleantiprotozoals and radiosensitizers, metronidazole derivatives
-nidine (see -onidine)antihypertensives, clonidine derivatives
nifur-5-nitrofuran derivatives
-nil (see -azenil)benzodiazepine receptor antagonists/agonists (benzodiazepine derivatives)
nitro-/nitr-/nit-/ni-/-ni-NO2 – derivatives
-nixinanti-inflammatory, anilinonicotinic acid derivatives
(-)nonacog (see -cog)blood factor IX
octakin (see -kin)interleukin-8 analogues and derivatives
-octadekin (see -kin)interleukin-18 human analogues and derivatives
(-)octocog (see -cog)blood factor VIII
-olfor alcohols and phenols
-ololβ-adrenoreceptor antagonists
-olone (see pred)steroids other than prednisolone derivatives
-onakin (see -kin)interleukin-1 analogues and derivatives
-onidesteroids for topical use, acetal derivatives
-onidineantihypertensives, clonidine derivatives
-onium (see -ium)quaternary ammonium compounds
-opamine (see -dopa)dopaminergic agents dopamine derivatives used as cardiac stimulant/antihypertensives/diuretics
-orph- (see orphan)opioid receptor antagonists/agonists, morphinan derivates
orphanopioid receptor antagonists/agonists, morphinan derivates
-otermin (see -ermin)bone morphogenetic proteins
-ox/-aloxantacids, aluminium derivatives
-oxacinantibacterials, nalidixic acid derivatives
-oxan(e)benzodioxane derivatives
-oxanide (see -anide)antiparasitics, salicylanilides and analogues
-oxef (see cef-)antibiotics, oxacefalosporanic acid derivatives
-oxepin (see -pine)tricyclic compounds
-oxetineserotonin and/or norepinephrine reuptake inhibitors, fluoxetine derivatives
-oxicam (see -icam)anti-inflammatory, isoxicam derivatives
-oxifene (see -ifene)antiestrogens or estrogen receptor modulators, clomifene and tamoxifen derivatives
-oxopine (see -pine)tricyclic compounds
-pafantplatelet-activating factor antagonists
-pamidediuretics, sulfamoylbenzoic acid derivatives (could be sulfamoylbenzamide)
-pamilcalcium channel blocker, verapamil derivatives
-parcinfor glycopeptide antibiotics
-paribpoly-ADP-ribose polymerase inhibitors
-parinheparin derivatives including low molecular mass heparins
-parinux (see -parin)synthetic heparinoids
-pendyl (see -dil)vasodilators
-penemanalogues of penicillanic acid antibiotics modified in the five-membered ring
perfl(u)-perfluorinated compounds used as blood substitutes and/or diagnostic agents
-peridol (see -perone)antipsychotics, haloperidol derivatives
-peridone (see -perone)antipsychotics, risperidone derivatives
-peronetranquillizers, neuroleptics, 4′-fluoro-4-piperidinobutyrophenone derivatives
-pidemhypnotics/sedatives, zolpidem derivatives
-pin(e)tricyclic compounds
-piprantprostaglandin receptors antagonists, non-prostanoids
-piprazole (see -prazole)psychotropics, phenylpiperazine derivatives
-pirone (see -spirone)anxiolytics, buspirone derivatives
-pirox (see -ox/-alox)antimycotic pyridone derivatives
-pitant (see -tant)neurokinin NK1 (substance P) receptor antagonist
-plactplatelet factor 4 analogues and derivatives
-pladibphospholipase A2 inhibitors
-planinglycopeptide antibacterials (Actinoplanes strains)
-plase (see -ase)enzymes
-plasmid (see -gene)gene therapy products
-platinantineoplastic agents, platinum derivatives
-plermin (see -ermin)platelet-derived growth factor
-plestim (see -stim and -kin)interleukin-3 analogues and derivatives
-plonimidazopyrimidine or pyrazolopyrimidine derivatives, used as anxiolytics, sedatives, hypnotics
-poetinerythropoietin type blood factors
-porfinbenzoporphyrin derivatives
-porideNa+/H+ antiport inhibitor
-praminesubstances of the imipramine group
-prazoleantiulcer, benzimidazole derivatives
-piprazolepsychotropics, phenylpiperazine derivatives
-prazanproton pump inhibitors, not dependent on acid activation
predprednisone and prednisolone derivatives
-prenaline (see -terol)bronchodilators, phenethylamine derivatives
-pressinvasoconstrictors, vasopressin derivatives
-previr (see vir)Hepatitis Virus C (HVC) protease inhibitors
-pridesulpiride derivatives
-prilangiotensin-converting enzyme inhibitors
-prilat (see -pril)angiotensin-converting enzyme inhibitors
-primantibacterials, dihydrofolate reductase (DHFR) inhibitors, trimethoprim derivatives
-pris-steroidal compounds acting on progesterone receptors (excluding -gestcompounds)
-pristinantibacterials, streptogramins, protein synthesis inhibitors, pristinamycin derivatives
-profenanti-inflammatory agents, ibuprofen derivatives prost prostaglandins
-prostil (see prost)prostaglandins, anti-ulcer
-quidardrugs used in multidrug resistance, quinoline derivatives
-quin(e)quinoline derivatives
-quinil (see -azenil)benzodiazepine receptor agonists, also partial or inverse (quinoline derivatives)
-racetamamide type nootrope agents, piracetam derivatives
-raciluracil type antineoplastics
-rafenibRAF (rapidely accelerated fibrosarcoma) kinase inhibitors
-relinpituitary hormone-release stimulating peptides
-relixgonadotropin-releasing-hormone (GnRH) inhibitors, peptides
-renonealdosterone antagonists, spironolactone derivates
-restat (see -stat)aldose reductase inhibitors
retinretinol derivatives
-ribineribofuranyl-derivatives of the “pyrazofurin” type
rifa-antibiotics, rifamycin derivatives
-rinonecardiac stimulants, amrinone derivatives
-ritide (see –tide)natriuretic peptides
-rixinchemokine CXCR receptors antagonists
-rizine (see -izine)antihistaminics/cerebral (or peripheral) vasodilators
-rolimus (see -imus)immunosuppressants, rapamycin derivatives
-rozolearomatase inhibitors, imidazole-triazole derivatives
-rsenantisense oligonucleotides
-rubicinantineoplastics, daunorubicin derivatives
salsalicylic acid derivatives
salazo-phenylazosalicylic acid derivatives antibacterial
-salanbrominated salicylamide derivatives disinfectant
-sartanangiotensin II receptor antagonists, antihypertensive (non-peptidic)
-semidediuretics, furosemide derivatives
-sermin (see -ermin)insulin-like growth factors
-serodserotonin receptor antagonists and partial agonists
-serpinederivatives of Rauwolfia alkaloids
-sertibserine/threonine kinase inhibitors
-setronserotonin receptor antagonists (5-HT3) not fitting into other established groups of serotonin receptor antagonists
-siransmall interfering RNA
som-growth hormone derivatives
-sopine (see -pine)tricyclic compounds
-spironeanxiolytics, buspirone derivatives
-stat/-stat-enzyme inhibitors
-steinemucolytics, other than bromhexine derivatives
-ster-androgens/anabolic steroids
-steride (see -ster-)androgens/anabolic steroids
-stigmineacetylcholinesterase inhibitors
-stimcolony stimulating factors
sulfa-anti-infectives, sulfonamides
-sulfanantineoplastic, alkylating agents, methanesulfonates
-tacept (see -cept)cytotoxic T lymphocyte-associated antigen 4 (CTLA-4) receptors
-tadinetricyclic histamine-H1 receptor antagonists, tricyclic compounds
-tansinemaytansinoid derivatives, antineoplastics
-tantneurokinin (tachykinin) receptor antagonists
-tapidemicrosomal triglyceride transfer protein (MTP) inhibitors
-taxelantineoplastics; taxane derivatives
-tecanantineoplastics, topoisomerase I inhibitors
-tepaantineoplastics, thiotepa derivatives
-tepine (see -pine)tricyclic compounds
-teplase (see -ase)tissue type plasminogen activators, see -ase item VI
-tercept (see -cept)transforming growth factors receptors
-termin (see -ermin)transforming growth factor
-terolbronchodilators, phenethylamine derivatives
-thiouracil (see -racil)uracil derivatives used as thyroid antagonists
-tiazemcalcium channel blockers, diltiazem derivatives
-tibantbradykinin receptor antagonists
-tidepeptides and glycopeptides (for special groups of peptides see -actide, -pressin, -relin, -tocin)
-tidinehistamine-H2-receptor antagonists, cimetidine derivatives
-tilide (see -ilide)class III antiarrhythmics, sematilide derivatives
-tiline (see -triptyline)antidepressants, dibenzo[a,d]cycloheptane or cyclopheptene derivatives
-tinibtyrosine kinase inhibitors
-tirelin (see -relin)thyrotropin releasing hormone analogues
-tizidediuretics, chlorothiazide derivatives
-tocinoxytocin derivatives
-toinantiepileptics, hydantoin derivatives
-tolimod (see –imod)toll-like receptors (TLR) agonists
-trakin (see -kin)interleukin-4 analogues and derivatives
-trakinra (see -kinra)interleukin-4 receptor antagonists
-tralineserotonin reuptake inhibitors
-tredekin (see -kin)interleukin-13 analogues and derivatives
-trexatefolic acid analogues
-trexedantineoplastics; thymidilate synthetase inhibitors
-tricinantibiotics, polyene derivatives
-tril/trilatendopeptidase inhibitors
-triptanserotonin (5-HT1) receptor agonists, sumatriptan derivatives
-triptylineantidepressants, dibenzo[a,d]cycloheptane or cyclopheptene derivatives
-trobanthromboxane A2-receptor antagonists; antithrombotic agents
-trodast (see -ast)thromboxane A2-receptor antagonists, antiasthmatics
tropatropine derivatives
-uplase (see -ase)urokinase type plasminogen activator, see -ase item VII
-ur (see -uridine)uridine derivatives used as antiviral agents and as antineoplastics
-uridineuridine derivatives used as antiviral agents and as antineoplastics
-vaptanvasopressin receptor antagonists
-vastatin (see -stat)antihyperlipidaemic substances, HMG CoA reductase inhibitors
-vec (see -gene)gene therapy product
-verinespasmolytics with a papaverine-like action
vin-/-vin-vinca alkaloids
virantivirals (undefined group)
-vircept (see -cept)antiviral receptors
-virine (see vir)non-nucleoside reverse transcriptase inhibitors (NNRTI)
-viroc (see -vir)CCR5 (Chemokine CC motif receptor 5) receptor antagonists
-virsenantisense oligonucleotides
-vos (see fos)insecticides, anthelminthics, pesticides etc., phosphorus derivatives
-vudine (see -uridine)uridine derivatives used as antiviral agents and as antineoplastics
-xabanblood coagulation factor XA inhibitors, antithrombotics
-xanox (see -ox/-alox)anti-allergics, tixanox group
-xetanchelating agents
-yzine (see -izine)diphenylmethyl piperazine derivatives
-zafonealozafone derivatives
-zepine(see -pine) tricyclic compounds
-zolast (see -ast)leukotriene biosynthesis inhibitors
-zomibproteasome inhibitors
-zone (see -buzone)anti-inflammatory analgesics, phenylbutazone derivatives
-zotan5-HT1A receptor agonists / antagonists acting primarily as neuroprotectors

Source: World Health Organization

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