ISMP List of Additional Drug Names with Tall Man Letters

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Also see: FDA-Approved List of Generic Drug Names with Tall Man Letters

Drug Name With Tall Man Letters Confused With
ALPRAZolam LORazepam — clonazePAM
aMILoride amLODIPine
amLODIPine aMILoride
ARIPiprazole RABEprazole
AVINza INVanz*
azaCITIDine azaTHIOprine
azaTHIOprine azaCITIDine
carBAMazepine OXcarbazepine
CARBOplatin CISplatin
ceFAZolin cefoTEtan — cefOXitin — cefTAZidime — cefTRIAXone
cefoTEtan ceFAZolin — cefOXitin — cefTAZidime — cefTRIAXone
cefOXitin ceFAZolin — cefoTEtan — cefTAZidime — cefTRIAXone
cefTAZidime ceFAZolin — cefoTEtan — cefOXitin — cefTRIAXone
cefTRIAXone ceFAZolin - cefoTEtan – cefOXitin – cefTAZidime
CeleBREX CeleXA*
CeleXA CeleBREX*
chlordiazePOXIDE chlorproMAZINE
chlorproMAZINE chlordiazePOXIDE
CISplatin CARBOplatin
cloBAZam clonazePAM
clonazePAM cloNIDine — cloZAPine — cloBAZam — LORazepam
cloNIDine clonazePAM – cloZAPine — KlonoPIN*
cloZAPine clonazePAM — cloNIDine
DACTINomycin DAPTOmycin
DAPTOmycin DACTINomycin
DEPO-Medrol* SOLU-Medrol*
diazePAM dilTIAZem
dilTIAZem diazePAM
DOCEtaxel PACLitaxel
DOXOrubicin IDArubicin
DULoxetine FLUoxetine — PARoxetine
ePHEDrine EPINEPHrine
EPINEPHrine ePHEDrine
epiRUBicin eriBULin
eriBULin epiRUBicin
fentaNYL SUFentanil
flavoxATE fluvoxaMINE
FLUoxetine DULoxetine — PARoxetine
fluPHENAZine fluvoxaMINE
fluvoxaMINE fluPHENAZine - flavoxATE
guaiFENesin guanFACINE
guanFACINE guaiFENesin
HumaLOG* HumuLIN*
HumuLIN* HumaLOG*
hydrALAZINE hydroCHLOROthiazide – hydrOXYzine
hydroCHLOROthiazide hydrOXYzine — hydrALAZINE
HYDROCODONE oxyCODONE
HYDROmorphone morphine — oxyMORphone
HYDROXYprogesterone medroxyPROGESTERone
hydrOXYzine hydrALAZINE — hydroCHLOROthiazide
IDArubicin DOXOrubicin – idaruCIZUmab
idaruCIZUmab IDArubicin
inFLIXimab riTUXimab
INVanz* AVINza*
ISOtretinoin tretinoin
KlonoPIN* cloNIDine
LaMICtal* LamISIL*
LamISIL* LaMICtal*
lamiVUDine lamoTRIgine
lamoTRIgine lamiVUDine
levETIRAcetam levOCARNitine — levoFLOXacin
levOCARNitine levETIRAcetam
levoFLOXacin levETIRAcetam
LEVOleucovorin leucovorin
LORazepam ALPRAZolam — clonazePAM
medroxyPROGESTERone HYDROXYprogesterone
metFORMIN metroNIDAZOLE
methazolAMIDE methIMAzole — metOLazone
methIMAzole metOLazone – methazolAMIDE
metOLazone methIMAzole — methazolAMIDE
metroNIDAZOLE metFORMIN
metyraPONE metyroSINE
metyroSINE metyraPONE
miFEPRIStone miSOPROStol
miSOPROStol miFEPRIStone
mitoMYcin mitoXANTRONE
mitoXANTRONE mitoMYcin
NexAVAR* NexIUM*
NexIUM* NexAVAR*
niCARdipine niMODipine – NIFEdipine
NIFEdipine niMODipine — niCARdipine
niMODipine NIFEdipine – niCARdipine
NovoLIN* NovoLOG*
NovoLOG* NovoLIN*
OLANZapine QUEtiapine
OXcarbazepine carBAMazepine
oxyCODONE HYDROCODONE — OxyCONTIN*– oxyMORphone
OxyCONTIN* oxyCODONE – oxyMORphone
oxyMORphone HYDROmorphone — oxyCODONE – OxyCONTIN*
PACLitaxel DOCEtaxel
PARoxetine FLUoxetine — DULoxetine
PAZOPanib PONATinib
PEMEtrexed PRALAtrexate
penicillAMINE penicillin
PENTobarbital PHENobarbital
PHENobarbital PENTobarbital
PONATinib PAZOPanib
PRALAtrexate PEMEtrexed
PriLOSEC* PROzac*
PROzac* PriLOSEC*
QUEtiapine OLANZapine
quiNIDine quiNINE
quiNINE quiNIDine
RABEprazole ARIPiprazole
raNITIdine riMANTAdine
rifAMPin rifAXIMin
rifAXIMin rifAMPin
riMANTAdine raNITIdine
RisperDAL* rOPINIRole
risperiDONE rOPINIRole
riTUXimab inFLIXimab
romiDEPsin romiPLOStim
romiPLOStim romiDEPsin
rOPINIRole RisperDAL*— risperiDONE
SandIMMUNE* SandoSTATIN*
SandoSTATIN* SandIMMUNE*
sAXagliptin SITagliptin
SEROquel* SINEquan*
SINEquan* SEROquel*
SITagliptin sAXagliptin — SUMAtriptan
Solu-CORTEF* SOLU-Medrol*
SOLU-Medrol* Solu-CORTEF* — DEPO-Medrol*
SORAfenib SUNItinib
SUFentanil fentaNYL
sulfADIAZINE sulfaSALAzine
sulfaSALAzine sulfADIAZINE
SUMAtriptan SITagliptin — ZOLMitriptan
SUNItinib SORAfenib
TEGretol* TRENtal*
tiaGABine tiZANidine
tiZANidine tiaGABine
traMADol traZODone
traZODone traMADol
TRENtal* TEGretol*
valACYclovir valGANciclovir
valGANciclovir valACYclovir
ZOLMitriptan SUMAtriptan
ZyPREXA* ZyrTEC*
ZyrTEC* ZyPREXA*

*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. An asterisk follows all brand names on the ISMP list.