If the inline PDF is not rendering correctly, you can download the PDF file here.

ISMP’s List of Confused Drug Names

This list of confused drug names, which includes look-alike and sound-alike name pairs, consists of those name pairs that have been published in the ISMP Medication Safety Alert!® and the ISMP Medication Safety Alert!® Community/Ambulatory Care Edition. Events involving these medications were reported to ISMP through either the ISMP National Medication Errors Reporting Program (ISMP MERP) or ISMP National Vaccine Errors Reporting Program (ISMP VERP). We hope you will use this list to determine which medications require special safeguards to reduce the risk of errors. This may include strategies such as: using both the brand and generic names on prescriptions and labels; including the purpose of the medication on prescriptions; configuring computer selection screens to prevent look-alike names from appearing consecutively; and changing the appearance of look-alike product names to draw attention to their dissimilarities. Both the FDA-approved and the ISMP-recommended tall man (mixed case) letters have been included in the list below.

Drug NameConfused Drug Names
Abelcetamphotericin B
AccuprilAciphex
acetaZOLAMIDEacetoHEXAMIDE
acetic acid for irrigationglacial acetic acid
acetoHEXAMIDEacetaZOLAMIDE
AciphexAccupril
AciphexAricept
ActivaseCathflo Activase
ActivaseTNKase
ActonelActos
ActosActonel
Adacel (Tdap)Daptacel (DTaP)
AdderallInderal
AdderallAdderall XR
Adderall XRAdderall
ado-trastuzumab emtansinetrastuzumab
AdvairAdvicor
AdvicorAdvair
AdvicorAltocor
Afrin (oxymetazoline)Afrin (saline)
Afrin (saline)Afrin (oxymetazoline)
Aggrastatargatroban
AldaraAlora
AlkeranLeukeran
AlkeranMyleran
Allegra (fexofenadine)Allegra Anti-Itch Cream (diphenhydrAMINE/allantoin)
AllegraViagra
Allegra Anti-Itch Cream (diphenhydrAMINE/allantoin)Allegra (fexofenadine)
AloraAldara
ALPRAZolamLORazepam
AltocorAdvicor
amantadineamiodarone
AmarylReminyl
Ambisomeamphotericin B
AmicarOmacor
AmikinKineret
aMILorideamLODIPine
amiodaroneamantadine
amLODIPineaMILoride
amphotericin BAbelcet
amphotericin BAmbisome
AnacinAnacin-3
Anacin-3Anacin
antacidAtacand
Anticoagulant Citrate Dextrose Solution Formula AAnticoagulant Sodium Citrate Solution
Anticoagulant Sodium Citrate SolutionAnticoagulant Citrate Dextrose Solution Formula A
AntivertAxert
AnzemetAvandamet
ApidraSpiriva
ApresolinePriscoline
argatrobanAggrastat
argatrobanOrgaran
AriceptAciphex
AriceptAzilect
ARIPiprazoleproton pump inhibitors
ARIPiprazoleRABEprazole
Arista AH (absorbable hemostatic agent)Arixtra
ArixtraArista AH (absorbable hemostatic agent)
AsacolOs-Cal
Atacandantacid
atomoxetineatorvastatin
atorvastatinatomoxetine
AtroventNatru-Vent
AvandametAnzemet
AvandiaPrandin

*Brand names always start with an uppercase letter. Some brand names incorporate tall man letters in initial characters and may not be readily recognized as brand names. Brand name products appear in black; generic/other products appear in red.

Drug NameConfused Drug Names
AvandiaCoumadin
AVINzaINVanz
AVINzaEvista
AxertAntivert
azaCITIDineazaTHIOprine
azaTHIOprineazaCITIDine
AzilectAricept
B & O (belladonna and opium)Beano
BabyBIGHBIG (hepatitis B immune globulin)
Bayhep-BBayrab
Bayhep-BBayrho-D
BayrabBayhep-B
BayrabBayrho-D
Bayrho-DBayhep-B
Bayrho-DBayrab
BeanoB & O (belladonna and opium)
Benadrylbenazepril
benazeprilBenadryl
BenicarMevacor
Betadine (with povidone-iodine)Betadine (without povidone-iodine)
Betadine (without povidone-iodine)Betadine (with povidone-iodine)
BextraZetia
Bicillin C-RBicillin L-A
Bicillin L-ABicillin C-R
BicitraPolycitra
BidexVidex
BrethineMethergine
Bio-T-GelT-Gel
BreviblocBrevital
BrevitalBrevibloc
BrilintaBrintellix
BrintellixBrilinta
buPROPionbusPIRone
busPIRonebuPROPion
Capadex [non-US product]Kapidex
CapexKapidex
CaracKuric
captoprilcarvedilol
carBAMazepineOXcarbazepine
CARBOplatinCISplatin
CardeneCardizem
CardizemCardene
CarduraCoumadin
carvedilolcaptopril
CasodexKapidex
Cathflo ActivaseActivase
CedaxCidex
ceFAZolincefTRIAXone
cefTRIAXoneceFAZolin
CeleBREXCeleXA
CeleBREXCerebyx
CeleXAZyPREXA
CeleXACeleBREX
CeleXACerebyx
CerebyxCeleBREX
CerebyxCeleXA
cetirizinesertraline
cetirizinestavudine
chlordiazePOXIDEchlorproMAZINE
chlorproMAZINEchlordiazePOXIDE
chlorproMAZINEchlorproPAMIDE
chlorproPAMIDEchlorproMAZINE
CidexCedax
CISplatinCARBOplatin
Claritin (loratadine)Claritin Eye (ketotifen fumarate)
Claritin-DClaritin-D 24

*Brand names always start with an uppercase letter. Some brand names incorporate tall man letters in initial characters and may not be readily recognized as brand names. Brand name products appear in black; generic/other products appear in red.

Drug NameConfused Drug Names
Claritin-D 24Claritin-D
Claritin Eye (ketotifen fumarate)Claritin (loratadine)
ClindesseClindets
ClindetsClindesse
clobazamclonazePAM
clomiPHENEclomiPRAMINE
clomiPRAMINEclomiPHENE
clonazePAMclobazam
clonazePAMcloNIDine
clonazePAMLORazepam
cloNIDineclonazePAM
cloNIDineKlonoPIN
ClozarilColazal
coagulation factor IX (recombinant)factor IX complex, vapor heated
codeineLodine
ColaceCozaar
ColazalClozaril
colchicineCortrosyn
ComvaxRecombivax HB
Cortrosyncolchicine
CoumadinAvandia
CoumadinCardura
Covaryx HSCovera HS
Covera HSCovaryx HS
CozaarColace
CozaarZocor
cyclophosphamidecycloSPORINE
cycloSERINEcycloSPORINE
cycloSPORINEcyclophosphamide
cycloSPORINEcycloSERINE
CymbaltaSymbyax
DACTINomycinDAPTOmycin
Daptacel (DTaP)Adacel (Tdap)
DAPTOmycinDACTINomycin
DarvocetPercocet
DarvonDiovan
DAUNOrubicinDAUNOrubicin citrate liposomal
DAUNOrubicinDOXOrubicin
DAUNOrubicinIDArubicin
DAUNOrubicin citrate liposomalDAUNOrubicin
Denavirindinavir
DepakoteDepakote ER
Depakote ERDepakote
Depo-MedrolSolu-MEDROL
Depo-ProveraDepo-subQ provera 104
Depo-subQ provera 104Depo-Provera
desipraminedisopyramide
DesyrelSEROquel
dexmethylphenidatemethadone
DiabeneseDiamox
DiabetaZebeta
DiamoxDiabenese
DiflucanDiprivan
Dilacor XRPilocar
DilaudidDilaudid-5
Dilaudid-5Dilaudid
dimenhyDRINATEdiphenhydrAMINE
diphenhydrAMINEdimenhyDRINATE
DiovalDiovan
DiovanDioval
DiovanZyban
DiovanDarvon
DiprivanDiflucan
DiprivanDitropan
disopyramidedesipramine
DitropanDiprivan
DOBUTamineDOPamine
DOPamineDOBUTamine

*Brand names always start with an uppercase letter. Some brand names incorporate tall man letters in initial characters and may not be readily recognized as brand names. Brand name products appear in black; generic/other products appear in red.

Drug NameConfused Drug Names
DoribaxZovirax
DoxilPaxil
DOXOrubicinDAUNOrubicin
DOXOrubicinDOXOrubicin liposomal
DOXOrubicinIDArubicin
DOXOrubicin liposomalDOXOrubicin
Dulcolax (bisacodyl)Dulcolax (docusate sodium)
Dulcolax (docusate sodium)Dulcolax (bisacodyl)
DULoxetineFLUoxetine
DurasalDurezol
DurezolDurasal
DuricefUltracet
DynacinDynacirc
DynacircDynacin
edetate calcium disodiumedetate disodium
edetate disodiumedetate calcium disodium
EffexorEffexor XR
Effexor XREnablex
Effexor XREffexor
EnablexEffexor XR
EnbrelLevbid
Engerix-B adultEngerix-B pediatric/ adolescent
Engerix-B pediatric/adolescentEngerix-B adult
EnjuviaJanuvia
ePHEDrineEPINEPHrine
EPINEPHrineePHEDrine
epirubicineribulin
eribulinepirubicin
EstratestEstratest HS
Estratest HSEstratest
ethambutolEthmozine
ethaverine [non-US name]etravirine
Ethmozineethambutol
etravirineethaverine [non-US name]
EvistaAVINza
factor IX complex, vapor heatedcoagulation factor IX (recombinant)
FanaptXanax
FarxigaFetzima
Fastin (phentermine)Fastin (dietary supplement)
Fastin (dietary supplement)Fastin (phentermine)
FemaraFemhrt
FemhrtFemara
fentaNYLSUFentanil
FetzimaFarxiga
FioricetFiorinal
FiorinalFioricet
flavoxATEfluvoxaMINE
FlonaseFlovent
FloranexFlorinef
FlorastorFlorinef
FlorinefFloranex
FlorinefFlorastor
FloventFlonase
flumazenilinfluenza virus vaccine
FLUoxetinePARoxetine
FLUoxetineDULoxetine
FLUoxetineLoxitane
fluvoxaMINEflavoxATE
Focalgin BFocalin
FocalinFocalgin B
FolexFoltx
folic acidfolinic acid (leucovorin calcium)
folinic acid (leucovorin calcium)folic acid
FoltxFolex
fomepizoleomeprazole
ForadilFortical
ForadilToradol

*Brand names always start with an uppercase letter. Some brand names incorporate tall man letters in initial characters and may not be readily recognized as brand names. Brand name products appear in black; generic/other products appear in red.

Drug NameConfused Drug Names
ForticalForadil
gentamicingentian violet
gentian violetgentamicin
glacial acetic acidacetic acid for irrigation
glipiZIDEglyBURIDE
GlucotrolGlycotrol
glyBURIDEglipiZIDE
GlycotrolGlucotrol
GranulexRegranex
guaiFENesinguanFACINE
guanFACINEguaiFENesin
HBIG (hepatitis B immune globulin)BabyBIG
HealonHyalgan
heparinHespan
Hespanheparin
HMG-CoA reductase inhibitors (“statins”)nystatin
HumaLOGHumuLIN
HumaLOGNovoLOG
HumaLOG Mix 75/25HumuLIN 70/30
Humapen Memoir (for use with HumaLOG)Humira Pen
Humira PenHumapen Memoir (for use with HumaLOG)
HumuLINNovoLIN
HumuLINHumaLOG
HumuLIN 70/30HumaLOG Mix 75/25
HumuLIN R U-100HumuLIN R U-500
HumuLIN R U-500HumuLIN R U-100
HyalganHealon
hydrALAZINEhydrOXYzine
HydreaLyrica
HYDROcodoneoxyCODONE
HydrogesichydrOXYzine
HYDROmorphonemorphine
hydrOXYzineHydrogesic
hydrOXYzinehydrALAZINE
IDArubicinDAUNOrubicin
IDArubicinDOXOrubicin
InderalAdderall
indinavirDenavir
inFLIXimabriTUXimab
influenza virus vaccineflumazenil
influenza virus vaccineperflutren lipid microspheres
influenza virus vaccinetuberculin purified protein derivative (PPD)
InspraSpiriva
IntunivInvega
INVanzAVINza
InvegaIntuniv
iodineLodine
IsordilPlendil
ISOtretinointretinoin
JantovenJanumet
JantovenJanuvia
JanumetJantoven
JanumetJanuvia
JanumetSinemet
JanuviaEnjuvia
JanuviaJantoven
JanuviaJanumet
K-Phos NeutralNeutra-Phos-K
Kaopectate (bismuth subsalicylate)Kaopectate (docusate calcium)
Kaopectate (docusate calcium)Kaopectate (bismuth subsalicylate)
KadianKapidex
KaletraKeppra
KapidexCapadex [non-US product]
KapidexCapex

*Brand names always start with an uppercase letter. Some brand names incorporate tall man letters in initial characters and may not be readily recognized as brand names. Brand name products appear in black; generic/other products appear in red.

Drug NameConfused Drug Names
KapidexCasodex
KapidexKadian
KeflexKeppra
KeppraKaletra
KeppraKeflex
Ketalarketorolac
ketorolacKetalar
ketorolacmethadone
KineretAmikin
KlonoPINcloNIDine
KuricCarac
KwellQwell
LaMICtalLamISIL
LamISILLaMICtal
lamiVUDinelamoTRIgine
lamoTRIginelamiVUDine
lamoTRIginelevETIRAcetam
lamoTRIginelevothyroxine
Lanoxinlevothyroxine
Lanoxinnaloxone
lanthanum carbonatelithium carbonate
LantusLatuda
LantusLente
LariamLevaquin
LasixLuvox
LatudaLantus
LenteLantus
LetairisLetaris [non-US product]
Letaris [non-US product]Letairis
leucovorin calciumLeukeran
leucovorin calciumlevoleucovorin
LeukeranAlkeran
LeukeranMyleran
Leukeranleucovorin calcium
LevaquinLariam
LevbidEnbrel
levETIRAcetamlamoTRIgine
LevemirLovenox
levETIRAcetamlevOCARNitine
levETIRAcetamlevofloxacin
levOCARNitinelevETIRAcetam
levofloxacinlevETIRAcetam
levoleucovorinleucovorin calcium
levothyroxinelamoTRIgine
levothyroxineLanoxin
levothyroxineliothyronine
LexaproLoxitane
LexivaPexeva
liothyroninelevothyroxine
LipitorLoniten
LipitorZyrTEC
lithiumUltram
lithium carbonatelanthanum carbonate
Lodinecodeine
Lodineiodine
LonitenLipitor
LopressorLyrica
LORazepamALPRAZolam
LORazepamclonazePAM
LORazepamLovaza
LotronexProtonix
LovazaLORazepam
LovenoxLevemir
LoxitaneLexapro
LoxitaneFLUoxetine
LoxitaneSoriatane
LunestaNeulasta
Lupron Depot-3 MonthLupron Depot-Ped
Lupron Depot-PedLupron Depot-3 Month
LuvoxLasix

*Brand names always start with an uppercase letter. Some brand names incorporate tall man letters in initial characters and may not be readily recognized as brand names. Brand name products appear in black; generic/other products appear in red.

Drug NameConfused Drug Names
LyricaHydrea
LyricaLopressor
MaaloxMaalox Total Stomach Relief
Maalox Total Stomach ReliefMaalox
MatulaneMaterna
MaternaMatulane
MaxzideMicrozide
MenactraMenomune
MenomuneMenactra
Mephytonmethadone
Metadatemethadone
Metadate CDMetadate ER
Metadate ERMetadate CD
Metadate ERmethadone
metFORMINmetroNIDAZOLE
methadonedexmethylphenidate
methadoneketorolac
methadoneMephyton
methadoneMetadate
methadoneMetadate ER
methadonemethylphenidate
methadonemetolazone
MethergineBrethine
methimazolemetolazone
methylene blueVisionBlue
methylphenidatemethadone
metolazonemethadone
metolazonemethimazole
metoprolol succinatemetoprolol tartrate
metoprolol tartratemetoprolol succinate
metroNIDAZOLEmetFORMIN
MevacorBenicar
MicronaseMicrozide
MicrozideMaxzide
MicrozideMicronase
midodrineMidrin
Midrinmidodrine
mifepristonemisoprostol
MiralaxMirapex
MirapexMiralax
misoprostolmifepristone
mitoMYcinmitoXANtrone
mitoXANtronemitoMYcin
morphineHYDROmorphone
morphine - non-concentrated oral liquidmorphine - oral liquid concentrate
morphine - oral liquid concentratemorphine - non-concentrated oral liquid
MotrinNeurontin
MS ContinOxyCONTIN
MucinexMucinex Allergy
MucinexMucomyst
Mucinex AllergyMucinex
Mucinex DMucinex DM
Mucinex DMMucinex D
MucomystMucinex
MyleranAlkeran
MyleranLeukeran
nalbuphinenaloxone
naloxoneLanoxin
naloxonenalbuphine
NarcanNorcuron
Natru-VentAtrovent
NavaneNorvasc
Neo-Synephrine (oxymetazoline)Neo-Synephrine (phenylephrine)
Neo-Synephrine (phenylephrine)Neo-Synephrine (oxymetazoline)
NeulastaLunesta
NeulastaNeumega
NeulastaNuedexta

*Brand names always start with an uppercase letter. Some brand names incorporate tall man letters in initial characters and may not be readily recognized as brand names. Brand name products appear in black; generic/other products appear in red.

Drug NameConfused Drug Names
NeumegaNeupogen
NeumegaNeulasta
NeupogenNeumega
NeurontinMotrin
NeurontinNoroxin
Neutra-Phos-KK-Phos Neutral
NexAVARNexIUM
NexIUMNexAVAR
niCARdipineNIFEdipine
NIFEdipineniCARdipine
NIFEdipineniMODipine
niMODipineNIFEdipine
NorcuronNarcan
NormodyneNorpramin
NoroxinNeurontin
NorpraminNormodyne
NorvascNavane
NovoLINHumuLIN
NovoLINNovoLOG
NovoLIN 70/30NovoLOG Mix 70/30
NovoLOGHumaLOG
NovoLOGNovoLIN
NovoLOG FlexpenNovoLOG Mix 70/30 Flexpen
NovoLOG Mix 70/30 FlexpenNovoLOG Flexpen
NovoLOG Mix 70/30NovoLIN 70/30
NuedextaNeulasta
nystatinHMG-CoA reductase inhibitors (“statins”)
Occlusal-HPOcuflox
OcufloxOcclusal-HP
OLANZapineQUEtiapine
OmacorAmicar
omeprazolefomepizole
opium tinctureparegoric (camphorated tincture of opium)
OraceaOrencia
OrenciaOracea
Orgaranargatroban
Ortho Tri-CyclenOrtho Tri-Cyclen LO
Ortho Tri-Cyclen LOOrtho Tri-Cyclen
Os-CalAsacol
oxaprozinOXcarbazepine
OXcarbazepineoxaprozin
OXcarbazepinecarBAMazepine
oxyCODONEHYDROcodone
oxyCODONEOxyCONTIN
OxyCONTINMS Contin
OxyCONTINoxyCODONE
PACLitaxelPACLitaxel protein-bound particles
PACLitaxel protein-bound particlesPACLitaxel
PamelorPanlor DC
PamelorTambocor
Panlor DCPamelor
paregoric (camphorated tincture of opium)opium tincture
PARoxetineFLUoxetine
PARoxetinepiroxicam
PatanolPlatinol
PavulonPeptavlon
PaxilDoxil
PaxilTaxol
PaxilPlavix
PAZOPanibPONATinib
PEMEtrexedPRALAtrexate
penicillinpenicillAMINE
penicillAMINEpenicillin
PeptavlonPavulon

*Brand names always start with an uppercase letter. Some brand names incorporate tall man letters in initial characters and may not be readily recognized as brand names. Brand name products appear in black; generic/other products appear in red.

Drug NameConfused Drug Names
PercocetDarvocet
PercocetProcet
perflutren lipid microspheresinfluenza virus vaccine
PexevaLexiva
PENTobarbitalPHENobarbital
PHENobarbitalPENTobarbital
PilocarDilacor XR
piroxicamPARoxetine
PlatinolPatanol
PlavixPaxil
PlavixPradax [Non-US Product]
PlavixPradaxa
PlendilIsordil
pneumococcal 7-valent vaccinepneumococcal polyvalent vaccine
pneumococcal polyvalent vaccinepneumococcal 7-valent vaccine
PolycitraBicitra
PONATinibPAZOPanib
potassium acetatesodium acetate
PRALAtrexatePEMEtrexed
Pradax [Non-US Product]Plavix
PradaxaPlavix
PrandinAvandia
PrecarePrecose
PrecosePrecare
prednisoLONEpredniSONE
predniSONEprednisoLONE
PrenexaRanexa
PriLOSECPristiq
PriLOSECPROzac
PriscolineApresoline
PristiqPriLOSEC
probenecidProcanbid
Procan SRProcanbid
Procanbidprobenecid
ProcanbidProcan SR
Procardia XLProtain XL
ProcetPercocet
PrografPROzac
propylthiouracilPurinethol
ProscarProvera
Protain XLProcardia XL
protamineProtonix
proton pump inhibitorsARIPiprazole
ProtonixLotronex
Protonixprotamine
ProveraProscar
ProveraPROzac
PROzacPrograf
PROzacPriLOSEC
PROzacProvera
Purinetholpropylthiouracil
Pyridiumpyridoxine
pyridoxinePyridium
QUEtiapineOLANZapine
quiNIDinequiNINE
quiNINEquiNIDine
QwellKwell
RABEprazoleARIPiprazole
RanexaPrenexa
RapafloRapamune
RapamuneRapaflo
RazadyneRozerem
Recombivax HBComvax
RegranexGranulex
ReminylRobinul
ReminylAmaryl
RenagelRenvela
RenvelaRenagel

*Brand names always start with an uppercase letter. Some brand names incorporate tall man letters in initial characters and may not be readily recognized as brand names. Brand name products appear in black; generic/other products appear in red.

Drug NameConfused Drug Names
ReprexainZyPREXA
RestorilRisperDAL
Retrovirritonavir
RifadinRifater
Rifamaterifampin
rifampinRifamate
rifampinrifaximin
RifaterRifadin
rifaximinrifampin
RisperDALRestoril
risperiDONErOPINIRole
Ritalinritodrine
Ritalin LARitalin SR
Ritalin SRRitalin LA
ritodrineRitalin
ritonavirRetrovir
riTUXimabinFLIXimab
RobinulReminyl
rOPINIRolerisperiDONE
RoxanolRoxicodone Intensol
RoxanolRoxicet
RoxicetRoxanol
Roxicodone IntensolRoxanol
RozeremRazadyne
Salagenselegiline
SandIMMUNESandoSTATIN
SandoSTATINSandIMMUNE
saquinavirSINEquan
saquinavir (free base)saquinavir mesylate
saquinavir mesylatesaquinavir (free base)
SarafemSerophene
selegilineSalagen
SeropheneSarafem
SEROquelDesyrel
SEROquelSEROquel XR
SEROquelSerzone
SEROquelSINEquan
SEROquel XRSEROquel
sertralinecetirizine
sertralineSoriatane
SerzoneSEROquel
silodosinsirolimus
SinemetJanumet
SINEquansaquinavir
SINEquanSEROquel
SINEquanSingulair
SINEquanZonegran
SingulairSINEquan
sirolimussilodosin
sitaGLIPtinSUMAtriptan
sodium acetatepotassium acetate
Solu-CORTEFSolu-MEDROL
Solu-MEDROLDepo-Medrol
Solu-MEDROLSolu-CORTEF
SonataSoriatane
SoriataneLoxitane
Soriatanesertraline
SoriataneSonata
sotalolSudafed
SpirivaApidra
SpirivaInspra
stavudinecetirizine
Sudafedsotalol
SudafedSudafed PE
Sudafed 12 HourSudafed 12 Hour Pressure + Pain
Sudafed 12 Hour Pressure + PainSudafed 12 Hour
Sudafed PESudafed
SUFentanilfentaNYL
sulfADIAZINEsulfaSALAzine

*Brand names always start with an uppercase letter. Some brand names incorporate tall man letters in initial characters and may not be readily recognized as brand names. Brand name products appear in black; generic/other products appear in red.

Drug NameConfused Drug Names
sulfADIAZINEsulfiSOXAZOLE
sulfaSALAzinesulfADIAZINE
sulfiSOXAZOLEsulfADIAZINE
SUMAtriptansitaGLIPtin
SUMAtriptanZOLMitriptan
SymbyaxCymbalta
T-GelBio-T-Gel
TambocorPamelor
TaxolTaxotere
TaxolPaxil
TaxotereTaxol
TEGretolTEGretol XR
TEGretolTequin
TEGretolTRENtal
TEGretol XRTEGretol
TenexXanax
TequinTEGretol
TequinTiclid
Testoderm TTSTestoderm
Testoderm TTSTestoderm with Adhesive
Testoderm with AdhesiveTestoderm
Testoderm with AdhesiveTestoderm TTS
TestodermTestoderm TTS
TestodermTestoderm with Adhesive
tetanus diptheria toxoid (Td)tuberculin purified protein derivative (PPD)
ThalomidThiamine
ThiamineThalomid
tiaGABinetiZANidine
TiazacZiac
TiclidTequin
tiZANidinetiaGABine
TNKaseActivase
TNKaset-PA
TobradexTobrex
TobrexTobradex
TOLAZamideTOLBUTamide
TOLBUTamideTOLAZamide
TopamaxToprol-XL
Toprol-XLTopamax
ToradolForadil
t-PATNKase
TracleerTricor
traMADoltraZODone
trastuzumabado-trastuzumab emtansine
traZODonetraMADol
TRENtalTEGretol
tretinoinISOtretinoin
TricorTracleer
tromethamineTrophamine
Trophaminetromethamine
tuberculin purified protein derivative (PPD)influenza virus vaccine
tuberculin purified protein derivative (PPD)tetanus diptheria toxoid (Td)
TylenolTylenol PM
Tylenol PMTylenol
UltracetDuricef
Ultramlithium
valACYclovirvalGANciclovir
ValcyteValtrex
valGANciclovirvalACYclovir
ValtrexValcyte
VarivaxVZIG (varicella-zoster immune globulin)
VesanoidVesicare
VesicareVesanoid
VexolVosol
ViagraAllegra
VidexBidex
vinBLAStinevinCRIStine

*Brand names always start with an uppercase letter. Some brand names incorporate tall man letters in initial characters and may not be readily recognized as brand names. Brand name products appear in black; generic/other products appear in red.

Drug NameConfused Drug Names
vinCRIStinevinBLAStine
ViokaseViokase 8
Viokase 8Viokase
VioxxZyvox
ViraceptViramune
ViramuneViracept
Viramune (nevirapine)Viramune (herbal product)
Viramune (herbal product)Viramune (nevirapine)
VisionBluemethylene blue
VosolVexol
VZIG (varicella-zoster immune globulin)Varivax
Wellbutrin SRWellbutrin XL
Wellbutrin XLWellbutrin SR
XanaxFanapt
XanaxTenex
XanaxZantac
XelodaXenical
XenicalXeloda
YasminYaz
YazYasmin
ZantacXanax
ZantacZyrTEC
Zavesca (escitalopram) [non-US product]Zavesca (miglustat)
Zavesca (miglustat)Zavesca (escitalopram) [non-US product]
ZebetaDiabeta
ZebetaZetia
ZegeridZestril
Zelapar (Zydis formulation)ZyPREXA Zydis
ZeritZyrTEC
ZestrilZegerid
ZestrilZetia
ZestrilZyPREXA
ZetiaBextra
ZetiaZebeta
ZetiaZestril
ZiacTiazac
ZocorCozaar
ZocorZyrTEC
ZOLMitriptanSUMAtriptan
zolpidemZyloprim
ZonegranSINEquan
ZostrixZovirax
ZoviraxDoribax
ZoviraxZyvox
ZoviraxZostrix
ZybanDiovan
Zyloprimzolpidem
ZyPREXACeleXA
ZyPREXAReprexain
ZyPREXAZestril
ZyPREXAZyrTEC
ZyPREXA ZydisZelapar (Zydis formulation)
ZyrTECLipitor
ZyrTECZantac
ZyrTECZerit
ZyrTECZocor
ZyrTECZyPREXA
ZyrTECZyrTEC-D
ZyrTEC (cetirizine)ZyrTEC Itchy Eye Drops (ketotifen fumarate)
ZyrTEC-DZyrTEC
ZyrTEC Itchy Eye Drops (ketotifen fumarate)ZyrTEC (cetirizine)
ZyvoxVioxx
ZyvoxZovirax

*Brand names always start with an uppercase letter. Some brand names incorporate tall man letters in initial characters and may not be readily recognized as brand names. Brand name products appear in black; generic/other products appear in red.

If the inline PDF is not rendering correctly, you can download the PDF file here.