Confused Drug Names
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 Institute for Safe Medication Practices’ (ISMP) ISMP Medication Safety Alert! and the ISMP Medication Safety Alert!Community/AmbulatoryCare Edition. Events involving these medications were reported to ISMP through the ISMP National Medication Errors Reporting Program ISMP MERP). This list can be used 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; 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.
Drug Name Confused Drug Name
Abelcet amphotericin B
Accupril Aciphex
acetaminophen acetaZOLAMIDE
acetaZOLAMIDE acetaminophen
acetaZOLAMIDE acetoHEXAMIDE
acetic acid for irrigation glacial acetic acid
acetoHEXAMIDE acetaZOLAMIDE
Aciphex Accupril
Aciphex Aricept
Activase Cathflo Activase
Activase TNKase
Actonel Actos
Actos Actonel
Adacel (Tdap) Daptacel (DTaP)
Adderall Adderall XR
Adderall Inderal
Adderall XR Adderall
ado-trastuzumab emtansine trastuzumab
Advair Advicor
Advicor Advair
Advicor Altocor
Afrin (oxymetazoline) Afrin (saline)
Afrin (saline) Afrin (oxymetazoline)
Aggrastat argatroban
Aldara Alora
Alkeran Leukeran
Alkeran Myleran
Allegra (fexofenadine) Allegra Anti-Itch Cream (diphenhydrAMINE/allantoin)
Allegra Viagra
Allegra Anti-Itch Cream (diphenhydrAMINE/allantoin) Allegra (fexofenadine)
Alora Aldara
ALPRAZolam clonazePAM
ALPRAZolam LORazepam
Altocor Advicor
amantadine amiodarone
Amaryl Reminyl
Ambisome amphotericin B
Amicar Omacor
Amikin Kineret
aMILoride amLODIPine
amiodarone amantadine
amLODIPine aMILoride
amphotericin B Abelcet
amphotericin B Ambisome
amphotericin B amphotericin B liposomal
amphotericin B liposomal amphotericin B
Anacin Anacin-3
Anacin-3 Anacin
antacid Atacand
anticoagulant citrate dextrose solution formula A anticoagulant sodium citrate solution
anticoagulant sodium citrate solution anticoagulant citrate dextrose solution formula A
Antivert Axert
Anzemet Avandamet
Apidra Spiriva
Apresoline Priscoline
argatroban Aggrastat
argatroban Orgaran
Aricept Aciphex
Aricept Azilect
ARIPiprazole proton pump inhibitors
ARIPiprazole RABEprazole
Arista AH (absorbable hemostatic agent) Arixtra
Arixtra Arista AH (absorbable hemostatic agent)
Asacol Os-Cal
Atacand antacid
atomoxetine atorvastatin
atorvastatin atomoxetine
Atrovent Natru-Vent
Avandamet Anzemet
Avandia Coumadin
Avandia Prandin
AVINza Evista
AVINza INVanz
Axert Antivert
azaCITIDine azaTHIOprine
azaTHIOprine azaCITIDine
Azilect Aricept
B & O (belladonna and opium) Beano
BabyBIG HBIG (hepatitis B immune globulin)
Bayhep-B Bayrab
Bayhep-B Bayrho-D
Bayrab Bayhep-B
Bayrab Bayrho-D
Bayrho-D Bayhep-B
Bayrho-D Bayrab
Beano B & O (belladonna and opium)
Benadryl benazepril
benazepril Benadryl
Benicar Mevacor
Betadine (with povidone-iodine) Betadine (without povidone-iodine)
Betadine (without povidone-iodine) Betadine (with povidone-iodine)
betaine (anhydrous form) betaine HCl
betaine HCl betaine (anhydrous form)
Bextra Zetia
Bicillin C-R Bicillin L-A
Bicillin L-A Bicillin C-R
Bicitra Polycitra
Bidex Videx
Brethine Methergine
Bio-T-Gel T-Gel
Brevibloc Brevital
Brevital Brevibloc
Brilinta Brintellix
Brintellix Brilinta
buprenorphine HYDROmorphone
buPROPion busPIRone
busPIRone buPROPion
Capadex [non-US product] Kapidex
Capex Kapidex
Carac Kuric
captopril carvedilol
carBAMazepine OXcarbazepine
CARBOplatin CISplatin
Cardene Cardizem
Cardizem Cardene
Cardura Coumadin
carvedilol captopril
Casodex Kapidex
Cathflo Activase Activase
Cedax Cidex
ceFAZolin cefTRIAXone
cefTRIAXone ceFAZolin
cefuroxime sulfaSALAzine
CeleBREX CeleXA
CeleBREX Cerebyx
CeleXA CeleBREX
CeleXA Cerebyx
CeleXA ZyPREXA
Cerebyx CeleBREX
Cerebyx CeleXA
cetirizine sertraline
cetirizine stavudine
chlordiazePOXIDE chlorproMAZINE
chlorproMAZINE chlordiazePOXIDE
chlorproMAZINE chlorproPAMIDE
chlorproPAMIDE chlorproMAZINE
Cidex Cedax
CISplatin CARBOplatin
Clarispray (fluticasone propionate) Claritin (loratadine)
Claritin (loratadine) Claritin Eye (ketotifen fumarate)
Claritin (loratadine) Clarispray (fluticasone propionate)
Claritin-D Claritin-D 24
Claritin-D 24 Claritin-D
Claritin Eye (ketotifen fumarate) Claritin (loratadine)
Clindesse Clindets
Clindets Clindesse
cloBAZam clonazePAM
clomiPHENE clomiPRAMINE
clomiPRAMINE clomiPHENE
clonazePAM ALPRAZolam
clonazePAM cloBAZam
clonazePAM cloNIDine
clonazePAM cloZAPine
clonazePAM LORazepam
cloNIDine clonazePAM
cloNIDine cloZAPine
cloNIDine KlonoPIN
cloZAPine clonazePAM
cloZAPine cloNIDine
Clozaril Colazal
coagulation factor IX (recombinant) factor IX complex, vapor heated
codeine Lodine
Colace Cozaar
Colazal Clozaril
colchicine Cortrosyn
Comvax Recombivax HB
Cortrosyn colchicine
Coumadin Avandia
Coumadin Cardura
Covaryx HS Covera HS
Covera HS Covaryx HS
Cozaar Colace
Cozaar Zocor
Cubicin Cubicin RF
Cubicin RF Cubicin
cyclophosphamide cycloSPORINE
cycloSERINE cycloSPORINE
cycloSPORINE cyclophosphamide
cycloSPORINE cycloSERINE
cycloSPORINE cycloSPORINE modified
cycloSPORINE modified cycloSPORINE
Cymbalta Symbyax
dabigatran vigabatrin
DACTINomycin DAPTOmycin
Daptacel (DTaP) Adacel (Tdap)
DAPTOmycin DACTINomycin
Darvocet Percocet
Darvon Diovan
DAUNOrubicin DAUNOrubicin citrate liposomal
DAUNOrubicin DOXOrubicin
DAUNOrubicin IDArubicin
DAUNOrubicin citrate liposomal DAUNOrubicin
Denavir indinavir
Depakote Depakote ER
Depakote ER Depakote
DEPO-Medrol SOLU-Medrol
Depo-Provera Depo-subQ provera 104
Depo-subQ provera 104 Depo-Provera
desipramine disopyramide
desmopressin vasopressin
Desyrel SEROquel
dexamethasone dexmedetomidine
Dexilant DULoxetine
dexmedetomidine dexamethasone
dexmethylphenidate dexmethylphenidate mixed salts
dexmethylphenidate methadone
dexmethylphenidate mixed salts dexmethylphenidate
Diabenese Diamox
Diabeta Zebeta
Diamox Diabenese
diazePAM dilTIAZem
Diflucan Diprivan
Dilacor XR Pilocar
Dilaudid Dilaudid-5
Dilaudid-5 Dilaudid
dilTIAZem diazePAM
dimenhyDRINATE diphenhydrAMINE
diphenhydrAMINE dimenhyDRINATE
Dioval Diovan
Diovan Darvon
Diovan Dioval
Diovan Zyban
Diprivan Diflucan
Diprivan Ditropan
disopyramide desipramine
Ditropan Diprivan
DOBUTamine DOPamine
DOCEtaxel PACLitaxel
DOPamine DOBUTamine
Doribax Zovirax
Doxil Paxil
DOXOrubicin DAUNOrubicin
DOXOrubicin DOXOrubicin liposomal
DOXOrubicin IDArubicin
DOXOrubicin liposomal DOXOrubicin
Dramamine (dimenhyDRINATE) Dramamine (ginger root)
Dramamine (dimenhyDRINATE) Dramamine (meclizine)
Dramamine (ginger root) Dramamine (dimenhyDRINATE)
Dramamine (ginger root) Dramamine (meclizine)
Dramamine (meclizine) Dramamine (dimenhyDRINATE)
Dramamine (meclizine) Dramamine (ginger root)
Dulcolax (bisacodyl) Dulcolax (docusate sodium)
Dulcolax (docusate sodium) Dulcolax (bisacodyl)
DULoxetine Dexilant
DULoxetine FLUoxetine
DULoxetine PARoxetine
Durasal Durezol
Durezol Durasal
Duricef Ultracet
Dynacin Dynacirc
Dynacirc Dynacin
edetate calcium disodium edetate disodium
edetate disodium edetate calcium disodium
Effexor Effexor XR
Effexor XR Effexor
Effexor XR Enablex
elvitegravir, cobicistat, emtricitabine, and tenofovir alafenamide elvitegravir, cobicistat, emtricitabine, and tenofovir disoproxil fumarate
elvitegravir, cobicistat, emtricitabine, and tenofovir disoproxil fumarate elvitegravir, cobicistat, emtricitabine, and tenofovir alafenamide
Enablex Effexor XR
Enbrel Levbid
Engerix-B adult Engerix-B pediatric/adolescent
Engerix-B pediatric/adolescent Engerix-B adult
Enjuvia Januvia
ePHEDrine EPINEPHrine
EPINEPHrine ePHEDrine
epiRUBicin eriBULin
eriBULin epiRUBicin
Estratest Estratest HS
Estratest HS Estratest
ethambutol Ethmozine
ethaverine [non-US name] etravirine
Ethmozine ethambutol
etravirine ethaverine [non-US name]
Evista AVINza
factor IX complex, vapor heated coagulation factor IX (recombinant)
Fanapt Xanax
Farxiga Fetzima
Fastin (phentermine) Fastin (dietary supplement)
Fastin (dietary supplement) Fastin (phentermine)
Femara Femhrt
Femhrt Femara
fentaNYL SUFentanil
Fetzima Farxiga
Fioricet Fiorinal
Fiorinal Fioricet
flavoxATE fluvoxaMINE
Flonase Flovent
Floranex Florinef
Florastor Florinef
Florinef Floranex
Florinef Florastor
Flovent Flonase
fluPHENAZine fluvoxaMINE
flumazenil influenza virus vaccine
FLUoxetine DULoxetine
FLUoxetine Loxitane
FLUoxetine PARoxetine
fluvoxaMINE flavoxATE
fluvoxaMINE fluPHENAZine
Focalgin B Focalin
Focalin Focalgin B
Folex Foltx
folic acid folinic acid (leucovorin calcium)
folinic acid (leucovorin calcium) folic acid
Foltx Folex
fomepizole omeprazole
Foradil Fortical
Foradil Toradol
Fortical Foradil
gabapentin gemfibrozil
gemfibrozil gabapentin
gentamicin gentian violet
gentian violet gentamicin
glacial acetic acid acetic acid for irrigation
glipiZIDE glyBURIDE
Glucotrol Glycotrol
glyBURIDE glipiZIDE
Glycotrol Glucotrol
Granulex Regranex
guaiFENesin guanFACINE
guanFACINE guaiFENesin
HBIG (hepatitis B immune globulin) BabyBIG
Healon Hyalgan
heparin Hespan
Hespan heparin
HMG-CoA reductase inhibitors ("statins") nystatin
HumaLOG HumuLIN
HumaLOG NovoLOG
HumaLOG Mix 75/25 HumuLIN 70/30
Humapen Memoir (for use with HumaLOG) Humira Pen
Humira Pen Humapen Memoir (for use with HumaLOG)
HumuLIN NovoLIN
HumuLIN HumaLOG
HumuLIN 70/30 HumaLOG Mix 75/25
HumuLIN R U-100 HumuLIN R U-500
HumuLIN R U-500 HumuLIN R U-100
Hyalgan Healon
hydrALAZINE hydroCHLOROthiazide
hydrALAZINE hydrOXYzine
Hydrea Lyrica
hydroCHLOROthiazide hydrALAZINE
hydroCHLOROthiazide hydrOXYzine
HYDROcodone oxyCODONE
Hydrogesic hydrOXYzine
HYDROmorphone buprenorphine
HYDROmorphone morphine
HYDROmorphone oxyMORphone
hydroxychloroquine hydroxyurea
HYDROXYprogesterone medroxyPROGESTERone
hydroxyurea hydroxychloroquine
hydroxyurea hydrOXYzine
hydrOXYzine hydrALAZINE
hydrOXYzine hydroCHLOROthiazide
hydrOXYzine Hydrogesic
hydrOXYzine hydroxyurea
IDArubicin DAUNOrubicin
IDArubicin DOXOrubicin
IDArubicin idaruCIZUmab
idaruCIZUmab IDArubicin
Inderal Adderall
indinavir Denavir
inFLIXimab riTUXimab
influenza virus vaccine flumazenil
influenza virus vaccine perflutren lipid microspheres
influenza virus vaccine tuberculin purified protein derivative (PPD)
Inspra Spiriva
Intuniv Invega
INVanz AVINza
Invega Intuniv
iodine Lodine
Isordil Plendil
ISOtretinoin tretinoin
Jantoven Janumet
Jantoven Januvia
Janumet Jantoven
Janumet Januvia
Janumet Sinemet
Januvia Enjuvia
Januvia Jantoven
Januvia Janumet
K-Phos Neutral Neutra-Phos-K
Kaopectate (bismuth subsalicylate) Kaopectate (docusate calcium)
Kaopectate (docusate calcium) Kaopectate (bismuth subsalicylate)
Kadian Kapidex
Kaletra Keppra
Kapidex Capadex [non-US product]
Kapidex Capex
Kapidex Casodex
Kapidex Kadian
Kay Ciel Kayexalate
Kayexalate Kay Ciel
Keflex Keppra
Keppra Kaletra
Keppra Keflex
Ketalar ketorolac
ketorolac Ketalar
ketorolac methadone
Kineret Amikin
KlonoPIN cloNIDine
Kuric Carac
Kwell Qwell
labetalol LaMICtal
labetalol lamoTRIgine
LaMICtal labetalol
LaMICtal LamISIL
LamISIL LaMICtal
lamiVUDine lamoTRIgine
lamoTRIgine labetalol
lamoTRIgine lamiVUDine
lamoTRIgine levETIRAcetam
lamoTRIgine levothyroxine
Lanoxin levothyroxine
Lanoxin naloxone
lanthanum carbonate lithium carbonate
Lantus Latuda
Lantus Lente
Lariam Levaquin
Lasix Luvox
Latuda Lantus
Lente Lantus
Letairis Letaris [non-US product]
Letaris [non-US product] Letairis
leucovorin calcium Leukeran
leucovorin calcium LEVOleucovorin
Leukeran Alkeran
Leukeran leucovorin calcium
Leukeran Myleran
Levaquin Lariam
Levbid Enbrel
Levemir Lovenox
levETIRAcetam lamoTRIgine
levETIRAcetam levOCARNitine
levETIRAcetam levoFLOXacin
levOCARNitine levETIRAcetam
levoFLOXacin levETIRAcetam
LEVOleucovorin leucovorin calcium
levothyroxine lamoTRIgine
levothyroxine Lanoxin
levothyroxine liothyronine
Lexapro Loxitane
Lexiva Pexeva
linaCLOtide linaGLIPtin
linaGLIPtin linaCLOtide
liothyronine levothyroxine
Lipitor Loniten
Lipitor ZyrTEC
lithium Ultram
lithium carbonate lanthanum carbonate
Lodine codeine
Lodine iodine
Loniten Lipitor
Lopressor Lyrica
LORazepam ALPRAZolam
LORazepam clonazePAM
LORazepam Lovaza
Lotronex Protonix
Lovaza LORazepam
Lovenox Levemir
Loxitane FLUoxetine
Loxitane Lexapro
Loxitane Soriatane
Lunesta Neulasta
Lupron Depot-3 Month Lupron Depot-Ped
Lupron Depot-Ped Lupron Depot-3 Month
Luvox Lasix
Lyrica Hydrea
Lyrica Lopressor
Maalox Maalox Total Stomach Relief
Maalox Total Stomach Relief Maalox
Malarone mefloquine
Matulane Materna
Materna Matulane
Maxzide Microzide
medroxyPROGESTERone HYDROXYprogesterone
medroxyPROGESTERone methylPREDNISolone
medroxyPROGESTERone methylTESTOSTERone
mefloquine Malarone
memantine methadone
Menactra Menomune
Menomune Menactra
Mephyton methadone
Metadate methadone
Metadate CD Metadate ER
Metadate ER Metadate CD
Metadate ER methadone
metFORMIN metroNIDAZOLE
methadone dexmethylphenidate
methadone ketorolac
methadone memantine
methadone Mephyton
methadone Metadate
methadone Metadate ER
methadone methylphenidate
methadone metOLazone
Methergine Brethine
methazolAMIDE methIMAzole
methazolAMIDE metOLazone
methIMAzole methazolAMIDE
methIMAzole metOLazone
methotrexate metOLazone
methotrexate MTX Patch (lidocaine and menthol)
methylene blue VisionBlue
methylphenidate methadone
methylPREDNISolone medroxyPROGESTERone
methylPREDNISolone methylTESTOSTERone
methylTESTOSTERone medroxyPROGESTERone
methylTESTOSTERone methylPREDNISolone
metyraPONE metyroSINE
metyroSINE metyraPONE
metOLazone methadone
metOLazone methazolAMIDE
metOLazone methIMAzole
metOLazone methotrexate
metoprolol succinate metoprolol tartrate
metoprolol tartrate metoprolol succinate
metroNIDAZOLE metFORMIN
Mevacor Benicar
Micronase Microzide
Microzide Maxzide
Microzide Micronase
midodrine Midrin
Midrin midodrine
miFEPRIStone miSOPROStol
migalastat miglustat
miglustat migalastat
Miralax Mirapex
Mirapex Miralax
miSOPROStol miFEPRIStone
mitoMYcin mitoXANTRONE
mitoXANTRONE mitoMYcin
mitoXANTRONE MTX Patch (lidocaine and menthol)
morphine HYDROmorphone
morphine – non-concentrated oral liquid morphine – oral liquid concentrate
morphine – oral liquid concentrate morphine – non-concentrated oral liquid
Motrin Neurontin
MS Contin OxyCONTIN
MTX Patch (lidocaine and menthol) methotrexate
MTX Patch (lidocaine and menthol) mitoXANTRONE
Mucinex (guaiFENesin) Mucinex Allergy (fexofenadine)
Mucinex Mucomyst
Mucinex Allergy (fexofenadine) Mucinex (guaiFENesin)
Mucinex D Mucinex DM
Mucinex DM Mucinex D
Mucomyst Mucinex
Myleran Alkeran
Myleran Leukeran
nalbuphine naloxone
naloxone Lanoxin
naloxone nalbuphine
Narcan Norcuron
Natru-Vent Atrovent
Navane Norvasc
Neo-Synephrine (oxymetazoline) Neo-Synephrine (phenylephrine)
Neo-Synephrine (phenylephrine) Neo-Synephrine (oxymetazoline)
neratinib nilotinib
neratinib niraparib
Neulasta Lunesta
Neulasta Nuedexta
Neulasta Neumega
Neumega Neulasta
Neumega Neupogen
Neupogen Neumega
Neurontin Motrin
Neurontin Noroxin
Neutra-Phos-K K-Phos Neutral
NexAVAR NexIUM
NexIUM NexAVAR
niCARdipine NIFEdipine
niCARdipine niMODipine
NIFEdipine niCARdipine
NIFEdipine niMODipine
nilotinib neratinib
nilotinib niraparib
niMODipine niCARdipine
niMODipine NIFEdipine
niraparib neratinib
niraparib nilotinib
Norcuron Narcan
Normodyne Norpramin
Noroxin Neurontin
Norpramin Normodyne
Norvasc Navane
NovoLIN HumuLIN
NovoLIN NovoLOG
NovoLIN 70/30 NovoLOG Mix 70/30
NovoLOG HumaLOG
NovoLOG NovoLIN
NovoLOG Flexpen NovoLOG Mix 70/30 Flexpen
NovoLOG Mix 70/30 Flexpen NovoLOG Flexpen
NovoLOG Mix 70/30 NovoLIN 70/30
Nuedexta Neulasta
nystatin HMG-CoA reductase inhibitors ("statins")
Occlusal-HP Ocuflox
Ocuflox Occlusal-HP
OLANZapine QUEtiapine
Omacor Amicar
omeprazole fomepizole
opium tincture paregoric (camphorated tincture of opium)
Oracea Orencia
Orencia Oracea
Orgaran argatroban
Ortho Tri-Cyclen Ortho Tri-Cyclen LO
Ortho Tri-Cyclen LO Ortho Tri-Cyclen
Os-Cal Asacol
oxaprozin OXcarbazepine
OXcarbazepine oxaprozin
OXcarbazepine carBAMazepine
oxybutynin oxyCODONE
oxyCODONE HYDROcodone
oxyCODONE oxybutynin
oxyCODONE OxyCONTIN
oxyCODONE oxyMORphone
OxyCONTIN MS Contin
OxyCONTIN oxyCODONE
OxyCONTIN oxyMORphone
oxyMORphone HYDROmorphone
oxyMORphone oxyCODONE
oxyMORphone OxyCONTIN
PACLitaxel DOCEtaxel
PACLitaxel PACLitaxel protein-bound particles
PACLitaxel protein-bound particles PACLitaxel
Pamelor Panlor DC
Pamelor Tambocor
Panlor DC Pamelor
paregoric (camphorated tincture of opium) opium tincture
PARoxetine DULoxetine
PARoxetine FLUoxetine
PARoxetine piroxicam
Patanol Platinol
Pavulon Peptavlon
Paxil Doxil
Paxil Plavix
Paxil Taxol
PAZOPanib PONATinib
PEMEtrexed PRALAtrexate
penicillin penicillAMINE
penicillAMINE penicillin
Peptavlon Pavulon
Percocet Darvocet
Percocet Procet
perflutren lipid microspheres influenza virus vaccine
Pexeva Lexiva
PENTobarbital PHENobarbital
PHENobarbital PENTobarbital
Pilocar Dilacor XR
piroxicam PARoxetine
Platinol Patanol
Plavix Paxil
Plavix Pradax [Non-US Product]
Plavix Pradaxa
Plendil Isordil
pneumococcal 7-valent vaccine pneumococcal polyvalent vaccine
pneumococcal polyvalent vaccine pneumococcal 7-valent vaccine
Polycitra Bicitra
polyethylene glycol propylene glycol
PONATinib PAZOPanib
potassium acetate sodium acetate
PRALAtrexate PEMEtrexed
Pradax [Non-US Product] Plavix
Pradaxa Plavix
Prandin Avandia
Precare Precose
Precose Precare
prednisoLONE predniSONE
predniSONE prednisoLONE
Prenexa Ranexa
PriLOSEC Pristiq
PriLOSEC PROzac
Priscoline Apresoline
Pristiq PriLOSEC
probenecid Procanbid
Procan SR Procanbid
Procanbid probenecid
Procanbid Procan SR
Procardia XL Protain XL
Procet Percocet
Prograf Proscar
Prograf PROzac
propylene glycol polyethylene glycol
propylthiouracil Purinethol
Proscar Prograf
Proscar Provera
Protain XL Procardia XL
protamine Protonix
proton pump inhibitors ARIPiprazole
Protonix Lotronex
Protonix protamine
Provera Proscar
Provera PROzac
PROzac Prograf
PROzac PriLOSEC
PROzac Provera
Purinethol propylthiouracil
Pyridium pyridoxine
pyridoxine Pyridium
QUEtiapine OLANZapine
quiNIDine quiNINE
quiNINE quiNIDine
Qwell Kwell
RABEprazole ARIPiprazole
Ranexa Prenexa
raNITIdine riMANTAdine
Rapaflo Rapamune
Rapamune Rapaflo
rasageline repaglinide
Razadyne Rozerem
Recombivax HB Comvax
Regranex Granulex
Reminyl Amaryl
Reminyl Robinul
Renagel Renvela
Renvela Renagel
repaglinide rasageline
Reprexain ZyPREXA
Restoril RisperDAL
Retrovir ritonavir
ribavirin riboflavin
riboflavin ribavirin
rifabutin rifapentine
Rifadin Rifater
Rifamate rifAMPin
rifAMPin Rifamate
rifAMPin rifAXIMin
rifapentine rifabutin
Rifater Rifadin
rifAXIMin rifAMPin
riMANTAdine raNITIdine
RisperDAL Restoril
RisperDAL rOPINIRole
risperiDONE rOPINIRole
Ritalin ritodrine
Ritalin LA Ritalin SR
Ritalin SR Ritalin LA
ritodrine Ritalin
ritonavir Retrovir
Rituxan Rituxan Hycela
Rituxan Hycela Rituxan
riTUXimab inFLIXimab
Robinul Reminyl
romiDEPsin romiPLOStim
romiPLOStim romiDEPsin
rOPINIRole RisperDAL
rOPINIRole risperiDONE
Roxanol Roxicet
Roxanol Roxicodone Intensol
Roxicet Roxanol
Roxicodone Intensol Roxanol
Rozerem Razadyne
Salagen selegiline
SandIMMUNE SandoSTATIN
SandoSTATIN SandIMMUNE
saquinavir SINEquan
saquinavir (free base) saquinavir mesylate
saquinavir mesylate saquinavir (free base)
Sarafem Serophene
sAXagliptin SITagliptin
selegiline Salagen
Serophene Sarafem
SEROquel Desyrel
SEROquel SEROquel XR
SEROquel Serzone
SEROquel SINEquan
SEROquel XR SEROquel
sertraline cetirizine
sertraline Soriatane
Serzone SEROquel
silodosin sirolimus
Sinemet Janumet
SINEquan saquinavir
SINEquan SEROquel
SINEquan Singulair
SINEquan Zeniquin [veterinary drug]
SINEquan Zonegran
Singulair SINEquan
sirolimus silodosin
SITagliptin sAXagliptin
SITagliptin SUMAtriptan
sodium acetate potassium acetate
Solu-CORTEF SOLU-Medrol
SOLU-Medrol DEPO-Medrol
SOLU-Medrol Solu-CORTEF
Sonata Soriatane
SORAfenib SUNItinib
Soriatane Loxitane
Soriatane sertraline
Soriatane Sonata
sotalol Sudafed
Spiriva Apidra
Spiriva Inspra
stavudine cetirizine
Sudafed sotalol
Sudafed Sudafed PE
Sudafed 12 Hour Sudafed 12 Hour Pressure + Pain
Sudafed 12 Hour Pressure + Pain Sudafed 12 Hour
Sudafed PE Sudafed
SUFentanil fentaNYL
sulfADIAZINE sulfaSALAzine
sulfADIAZINE sulfiSOXAZOLE
sulfaSALAzine cefuroxime
sulfaSALAzine sulfADIAZINE
sulfiSOXAZOLE sulfADIAZINE
SUMAtriptan SITagliptin
SUMAtriptan ZOLMitriptan
SUNItinib SORAfenib
Symbyax Cymbalta
T-Gel Bio-T-Gel
tacrolimus tamsulosin
Tambocor Pamelor
tamsulosin tacrolimus
Tanzeum Toujeo
Tanzeum Tradjenta
Tanzeum Tresiba
Tanzeum Trulicity
Tarceva Tresiba
Taxol Paxil
Taxol Taxotere
Taxotere Taxol
TEGretol TEGretol XR
TEGretol Tequin
TEGretol TRENtal
TEGretol XR TEGretol
Tenex Xanax
Tequin TEGretol
Tequin Ticlid
Testoderm Testoderm TTS
Testoderm Testoderm with Adhesive
Testoderm TTS Testoderm
Testoderm TTS Testoderm with Adhesive
Testoderm with Adhesive Testoderm
Testoderm with Adhesive Testoderm TTS
tetanus diptheria toxoid (Td) tuberculin purified protein derivative (PPD)
Thalomid Thiamine
Thiamine Thalomid
tiaGABine tiZANidine
Tiazac Ziac
Ticlid Tequin
tiZANidine tiaGABine
TNKase Activase
TNKase t-PA (Activase)
Tobradex Tobrex
Tobrex Tobradex
TOLAZamide TOLBUTamide
TOLBUTamide TOLAZamide
Topamax Toprol-XL
Toprol-XL Topamax
Toradol Foradil
Toujeo Tanzeum
Toujeo Tradjenta
Toujeo Tresiba
Toujeo Trulicity
t-PA (Activase) TNKase
Tracleer Tricor
Tradjenta Tanzeum
Tradjenta Toujeo
Tradjenta Tresiba
Tradjenta Trulicity
traMADol traZODone
trastuzumab ado-trastuzumab emtansine
traZODone traMADol
TRENtal TEGretol
Tresiba Tanzeum
Tresiba Tarceva
Tresiba Toujeo
Tresiba Tradjenta
Tresiba Trulicity
tretinoin ISOtretinoin
Tricor Tracleer
tromethamine Trophamine
Trophamine tromethamine
Trulicity Tanzeum
Trulicity Toujeo
Trulicity Tradjenta
Trulicity Tresiba
tuberculin purified protein derivative (PPD) influenza virus vaccine
tuberculin purified protein derivative (PPD) tetanus diptheria toxoid (Td)
Tylenol Tylenol PM
Tylenol PM Tylenol
Ultracet Duricef
Ultram lithium
valACYclovir valGANciclovir
Valcyte Valtrex
valGANciclovir valACYclovir
Valtrex Valcyte
Varivax VZIG (varicella-zoster immune globulin)
vasopressin desmopressin
Venofer Vfend
Venofer Vimpat
Vesanoid Vesicare
Vesicare Vesanoid
Vesicare Vessel Care (nutritional supplement)
Vessel Care (nutritional supplement) Vesicare
Vexol Vosol
Vfend Venofer
Vfend Vimpat
Viagra Allegra
Vicodin Visicol
Videx Bidex
vigabatrin dabigatran
Vimpat Venofer
Vimpat Vfend
vinBLAStine vinCRIStine
vinCRIStine vinBLAStine
Viokase Viokase 8
Viokase 8 Viokase
Vioxx Zyvox
Viracept Viramune
Viramune Viracept
Viramune (nevirapine) Viramune (herbal product)
Viramune (herbal product) Viramune (nevirapine)
Visicol Vicodin
VisionBlue methylene blue
Volumen Voluven
Voluven Volumen
Vosol Vexol
VZIG (varicella-zoster immune globulin) Varivax
Wellbutrin SR Wellbutrin XL
Wellbutrin XL Wellbutrin SR
Xanax Fanapt
Xanax Tenex
Xanax Zantac
Xeloda Xenical
Xenical Xeloda
Yasmin Yaz
Yaz Yasmin
Zantac Xanax
Zantac ZyrTEC
Zavesca (escitalopram) [non-US product] Zavesca (miglustat)
Zavesca (miglustat) Zavesca (escitalopram) [non-US product]
Zebeta Diabeta
Zebeta Zetia
Zegerid Zestril
Zelapar (Zydis formulation) ZyPREXA Zydis
Zeniquin [veterinary drug] SINEquan
Zerit ZyrTEC
Zestril Zegerid
Zestril Zetia
Zestril ZyPREXA
Zetia Bextra
Zetia Zebeta
Zetia Zestril
Ziac Tiazac
Zocor Cozaar
Zocor ZyrTEC
ZOLMitriptan SUMAtriptan
zolpidem Zyloprim
Zonegran SINEquan
Zostrix Zovirax
Zovirax Doribax
Zovirax Zostrix
Zovirax Zyvox
Zyban Diovan
Zyloprim zolpidem
ZyPREXA CeleXA
ZyPREXA Reprexain
ZyPREXA Zestril
ZyPREXA ZyrTEC
ZyPREXA Zydis Zelapar (Zydis formulation)
ZyrTEC Lipitor
ZyrTEC Zantac
ZyrTEC Zerit
ZyrTEC Zocor
ZyrTEC ZyPREXA
ZyrTEC ZyrTEC-D
ZyrTEC (cetirizine) ZyrTEC Itchy Eye Drops (ketotifen fumarate)
ZyrTEC-D ZyrTEC
ZyrTEC Itchy Eye Drops (ketotifen fumarate) ZyrTEC (cetirizine)
Zyvox Vioxx
Zyvox Zovirax
NOTES

Brand names always start with an uppercase letter; generics/other products are in lower case and italicized. Both the FDA-approved and the ISMP-recommended tall man letters are included in this list.

REFERENCES

Source: Institute for Safe Medication Practices. ISMP’s List of Confused Drug Names. 2019. Available at: https://www.ismp.org/recommendations/confused-drug-names-list. Accessed June 23, 2020.

(Rev. 6/2020)