List of Confused Drug Names
The Joint Commission established a National Patient Safety Goal that requires accredited organizations to identify a list of look-alike or sound-alike drugs used in their organization and, at a minimum, to review the list annually and take action to prevent errors involving the use of these drugs. Organizations must list at least 10 drug combinations from the Joint Commission’s list of LASA drugs.
The following are drug pairs that the Joint Commission and others have rated as most problematic. Names in ALL CAPITALS are brand names; those in lowercase are generic names.
| Drug Name | Confused Drug Name |
| Abelcet | amphotericin B |
| Accupril | Aciphex |
| acetaminophen | acetaZOLAMIDE |
| acetaZOLAMIDE | acetaminophen |
| acetic acid for irrigation | glacial acetic acid |
| Aciphex | Accupril |
| Aciphex | Aricept |
| Activase | Cathflo Activase |
| Activase | TNKase |
| Actonel | Actos |
| Actos | Actonel |
| Adacel (Tdap) | Daptacel (DTaP) |
| ado-trastuzumab emtansine | trastuzumab |
| Aggrastat | argatroban |
| Aldara | Alora |
| Alkeran | Leukeran |
| Alkeran | Myleran |
| Allegra | Allegra Anti-Itch Cream (diphenhydramine/allantoin) |
| Allegra | Viagra |
| Allegra Anti-Itch Cream (diphenhydramine/allantoin) | Allegra |
| Alora | Aldara |
| ALPRAZolam | clonazePAM |
| ALPRAZolam | LORazepam |
| amantadine | amiodarone |
| Ambisome | amphotericin B |
| aMILoride | amLODIPine |
| amiodarone | amantadine |
| amLODIPine | aMILoride |
| amphotericin B | Abelcet |
| amphotericin B | Ambisome |
| amphotericin B | amphotericin B liposomal |
| amphotericin B liposomal | amphotericin B |
| antacid | Atacand |
| anticoagulant citrate dextrose solution formula A | anticoagulant sodium citrate solution |
| anticoagulant sodium citrate solution | anticoagulant citrate dextrose solution formula A |
| Apidra | Spiriva |
| argatroban | Aggrastat |
| 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 |
| Avandia | Coumadin |
| azaCITIDine | azaTHIOprine |
| azaTHIOprine | azaCITIDine |
| Azilect | Aricept |
| B & O (belladonna and opium) | Beano |
| BabyBIG | HBIG (hepatitis B immune globulin) |
| Beano | B & O (belladonna and opium) |
| Benadryl | benazepril |
| benazepril | Benadryl |
| 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) |
| Bicillin C-R | Bicillin L-A |
| Bicillin L-A | Bicillin C-R |
| Bidex | Videx |
| Brevibloc | Brevital |
| Brevital | Brevibloc |
| buprenorphine | HYDROmorphone |
| buPROPion | busPIRone |
| busPIRone | buPROPion |
| captopril | carvedilol |
| carBAMazepine | OXcarbazepine |
| CARBOplatin | CISplatin |
| Cardene | Cardizem |
| Cardizem | Cardene |
| Cardura | Coumadin |
| carvedilol | captopril |
| Cathflo Activase | Activase |
| 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 |
| CISplatin | CARBOplatin |
| Claritin (loratadine) | Claritin Eye (ketotifen fumarate) |
| 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 |
| Colace | Cozaar |
| Colazal | Clozaril |
| colchicine | Cortrosyn |
| Cortrosyn | colchicine |
| Coumadin | Avandia |
| Coumadin | Cardura |
| Cozaar | Colace |
| Cozaar | Zocor |
| Cubicin | Cubicin RF |
| Cubicin RF | Cubicin |
| cyclophosphamide | cycloSPORINE |
| cycloSERINE | cycloSPORINE |
| cycloSPORINE | cyclophosphamide |
| cycloSPORINE | cycloSERINE |
| Cymbalta | Symbyax |
| dabigatran | vigabatrin |
| DACTINomycin | DAPTOmycin |
| Daptacel (DTaP) | Adacel (Tdap) |
| DAPTOmycin | DACTINomycin |
| DAUNOrubicin | DOXOrubicin |
| DAUNOrubicin | IDArubicin |
| 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 |
| dexamethasone | dexmedetomidine |
| Dexilant | DULoxetine |
| dexmedetomidine | dexamethasone |
| dexmethylphenidate | methadone |
| diazePAM | dilTIAZem |
| Diflucan | Diprivan |
| dilTIAZem | diazePAM |
| dimenhyDRINATE | diphenhydrAMINE |
| diphenhydrAMINE | dimenhyDRINATE |
| Diprivan | Diflucan |
| Diprivan | Ditropan |
| disopyramide | desipramine |
| Ditropan | Diprivan |
| DOBUTamine | DOPamine |
| DOCEtaxel | PACLitaxel |
| DOPamine | DOBUTamine |
| 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 |
| 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 |
| ePHEDrine | EPINEPHrine |
| EPINEPHrine | ePHEDrine |
| epiRUBicin | eriBULin |
| eriBULin | epiRUBicin |
| factor IX complex, vapor heated | coagulation factor IX (recombinant) |
| Fanapt | Xanax |
| Farxiga | Fetzima |
| 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 |
| flumazenil | influenza virus vaccine |
| FLUoxetine | DULoxetine |
| FLUoxetine | PARoxetine |
| fluPHENAZine | fluvoxaMINE |
| fluvoxaMINE | flavoxATE |
| fluvoxaMINE | fluPHENAZine |
| fomepizole | omeprazole |
| gabapentin | gemfibrozil |
| gemfibrozil | gabapentin |
| gentamicin | gentian violet |
| gentian violet | gentamicin |
| glacial acetic acid | acetic acid for irrigation |
| glipiZIDE | glyBURIDE |
| glyBURIDE | glipiZIDE |
| 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 |
| HumuLIN | HumaLOG |
| HumuLIN | NovoLIN |
| 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 |
| HYDROmorphone | buprenorphine |
| HYDROmorphone | morphine |
| HYDROmorphone | oxyMORphone |
| hydroxychloroquine | hydroxyurea |
| HYDROXYprogesterone | medroxyPROGESTERone |
| hydroxyurea | hydroxychloroquine |
| hydroxyurea | hydrOXYzine |
| hydrOXYzine | hydrALAZINE |
| hydrOXYzine | hydroCHLOROthiazide |
| hydrOXYzine | hydroxyurea |
| IDArubicin | DAUNOrubicin |
| IDArubicin | DOXOrubicin |
| IDArubicin | idaruCIZUmab |
| idaruCIZUmab | IDArubicin |
| 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 |
| Invega | Intuniv |
| ISOtretinoin | tretinoin |
| Jantoven | Janumet |
| Jantoven | Januvia |
| Janumet | Jantoven |
| Janumet | Januvia |
| Janumet | Sinemet |
| Januvia | Jantoven |
| Januvia | Janumet |
| K-Phos Neutral | Neutra-Phos-K |
| Kaletra | Keppra |
| Keflex | Keppra |
| Keppra | Kaletra |
| Keppra | Keflex |
| Ketalar | ketorolac |
| ketorolac | Ketalar |
| ketorolac | methadone |
| KlonoPIN | cloNIDine |
| 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 |
| Lasix | Luvox |
| Latuda | Lantus |
| leucovorin calcium | Leukeran |
| leucovorin calcium | LEVOleucovorin |
| Leukeran | Alkeran |
| Leukeran | leucovorin calcium |
| Leukeran | Myleran |
| Levbid | Enbrel |
| Levemir | Lovenox |
| levETIRAcetam | lamoTRIgine |
| levETIRAcetam | levOCARNitine |
| levETIRAcetam | levoFLOXacin |
| levOCARNitine | levETIRAcetam |
| levoFLOXacin | levETIRAcetam |
| LEVOleucovorin | leucovorin calcium |
| levothyroxine | lamoTRIgine |
| levothyroxine | Lanoxin |
| levothyroxine | liothyronine |
| Lexiva | Pexeva |
| linaCLOtide | linaGLIPtin |
| linaGLIPtin | linaCLOtide |
| liothyronine | levothyroxine |
| Lipitor | ZyrTEC |
| lithium | Ultram |
| lithium carbonate | lanthanum carbonate |
| Lopressor | Lyrica |
| LORazepam | ALPRAZolam |
| LORazepam | clonazePAM |
| LORazepam | Lovaza |
| Lotronex | Protonix |
| Lovaza | LORazepam |
| Lovenox | Levemir |
| Lunesta | Neulasta |
| Lupron Depot-3 Month | Lupron Depot-Ped |
| Lupron Depot-Ped | Lupron Depot-3 Month |
| Luvox | Lasix |
| Lyrica | Hydrea |
| Lyrica | Lopressor |
| Malarone | mefloquine |
| Maxzide | Microzide |
| medroxyPROGESTERone | HYDROXYprogesterone |
| medroxyPROGESTERone | methylPREDNISolone |
| medroxyPROGESTERone | methylTESTOSTERone |
| mefloquine | Malarone |
| memantine | methadone |
| Mephyton | methadone |
| Metadate | methadone |
| metFORMIN | metroNIDAZOLE |
| methadone | dexmethylphenidate |
| methadone | ketorolac |
| methadone | memantine |
| methadone | Mephyton |
| methadone | Metadate |
| methadone | methylphenidate |
| methadone | metOLazone |
| methazolAMIDE | methIMAzole |
| methazolAMIDE | metOLazone |
| methIMAzole | methazolAMIDE |
| methIMAzole | metOLazone |
| methotrexate | metOLazone |
| methylene blue | VisionBlue |
| methylphenidate | methadone |
| methylPREDNISolone | medroxyPROGESTERone |
| methylPREDNISolone | methylTESTOSTERone |
| methylTESTOSTERone | medroxyPROGESTERone |
| methylTESTOSTERone | methylPREDNISolone |
| metOLazone | methadone |
| metOLazone | methazolAMIDE |
| metOLazone | methIMAzole |
| metoprolol succinate | metoprolol tartrate |
| metoprolol tartrate | metoprolol succinate |
| metroNIDAZOLE | metFORMIN |
| metyraPONE | metyroSINE |
| metyroSINE | metyraPONE |
| Microzide | Maxzide |
| miFEPRIStone | miSOPROStol |
| Miralax | Mirapex |
| Mirapex | Miralax |
| miSOPROStol | miFEPRIStone |
| mitoMYcin | mitoXANTRONE |
| mitoXANTRONE | mitoMYcin |
| 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 |
| Mucinex D | Mucinex DM |
| Mucinex DM | Mucinex D |
| Myleran | Alkeran |
| Myleran | Leukeran |
| nalbuphine | naloxone |
| naloxone | Lanoxin |
| naloxone | nalbuphine |
| Neo-Synephrine (oxymetazoline) | Neo-Synephrine (phenylephrine) |
| Neo-Synephrine (phenylephrine) | Neo-Synephrine (oxymetazoline) |
| neratinib | nilotinib |
| neratinib | niraparib |
| Neulasta | Lunesta |
| Neulasta | Nuedexta |
| Neurontin | Motrin |
| 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 |
| 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 | NovoLIN 70/30 |
| NovoLOG Mix 70/30 FLEXPEN | NovoLOG FLEXPEN |
| Nuedexta | Neulasta |
| nystatin | HMG-CoA reductase inhibitors ("statins") |
| OLANZapine | QUEtiapine |
| omeprazole | fomepizole |
| Oracea | Orencia |
| Orencia | Oracea |
| OrthoTri-Cyclen | Ortho Tri-Cyclen LO |
| Ortho Tri-Cyclen LO | OrthoTri-Cyclen |
| Os-Cal | Asacol |
| oxaprozin | OXcarbazepine |
| OXcarbazepine | carBAMazepine |
| OXcarebazepine | oxaprozin |
| 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 | Tambocor |
| PARoxetine | DULoxetine |
| PARoxetine | FLUoxetine |
| PARoxetine | piroxicam |
| Paxil | Doxil |
| Paxil | Plavix |
| PAZOPanib | PONATinib |
| PEMEtrexed | PRALAtrexate |
| penicillAMINE | penicillin |
| penicillin | penicillAMINE |
| perflutren lipid microspheres | influenza virus vaccine |
| PENTobarbital | PHENobarbital |
| Pexeva | Lexiva |
| PHENobarbital | PENTobarbital |
| piroxicam | PARoxetine |
| Plavix | Paxil |
| Plavix | Pradaxa |
| polyethylene glycol | propylene glycol |
| PONATinib | PAZOPanib |
| potassium acetate | sodium acetate |
| Pradaxa | Plavix |
| PRALAtrexate | PEMEtrexed |
| prednisoLONE | predniSONE |
| predniSONE | prednisoLONE |
| Prenexa | Ranexa |
| PriLOSEC | Pristiq |
| PriLOSEC | PROzac |
| Pristiq | PriLOSEC |
| Prograf | Proscar |
| Prograf | PROzac |
| propylene glycol | polyethylene glycol |
| propylthiouracil | Purinethol |
| Proscar | Prograf |
| Proscar | Provera |
| protamine | Protonix |
| proton pump inhibitors | ARIPiprazole |
| Protonix | Lotronex |
| Protonix | protamine |
| Provera | Proscar |
| Provera | PROzac |
| PROzac | PriLOSEC |
| PROzac | Prograf |
| PROzac | Provera |
| Purinethol | propylthiouracil |
| Pyridium | pyridoxine |
| pyridoxine | Pyridium |
| QUEtiapine | OLANZapine |
| quiNIDine | quiNINE |
| quiNINE | quiNIDine |
| RABEprazole | ARIPiprazole |
| Ranexa | Prenexa |
| raNITIdine | riMANTAdine |
| Rapaflo | Rapamune |
| Rapamune | Rapaflo |
| Razadyne | Rozerem |
| Renagel | Renvela |
| Renvela | Renagel |
| repaglinide | rasagiline |
| 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 |
| ritonavir | Retrovir |
| Rituxan | Rituxan Hycela |
| Rituxan Hycela | Rituxan |
| riTUXimab | inFLIXimab |
| romiDEPsin | romiPLOStim |
| romiPLOStim | romiDEPsin |
| rOPINIRole | RisperDAL |
| rOPINIRole | risperiDONE |
| Rozerem | Razadyne |
| Salagen | selegiline |
| SandIMMUNE | SandoSTATIN |
| SandoSTATIN | SandIMMUNE |
| sAXagliptin | SITagliptin |
| selegiline | Salagen |
| SEROquel | SEROquel XR |
| SEROquel XR | SEROquel |
| sertraline | cetirizine |
| sertraline | Soriatane |
| silodosin | sirolimus |
| Sinemet | Janumet |
| 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 | 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 |
| sulfaSALAzine | cefuroxime |
| sulfaSALAzine | sulfADIAZINE |
| SUMAtriptan | SITagliptin |
| SUMAtriptan | ZOLMitriptan |
| SUNItinib | SORAfenib |
| Symbyax | Cymbalta |
| tacrolimus | tamsulosin |
| Tambocor | Pamelor |
| Tarceva | Tresiba |
| Taxol | Paxil |
| Taxol | Taxotere |
| Taxotere | Taxol |
| TEGretol | TEGretol XR |
| TEGretol XR | TEGretol |
| tetanus diphtheria toxoid (Td) | tuberculin purified protein derivative (PPD) |
| Thalomid | thiamine |
| thiamine | Thalomid |
| tiaGABine | tiZANidine |
| Tiazac | Ziac |
| tiZANidine | tiaGABine |
| TNKase | Activase |
| TNKase | t-PA |
| Tobradex | Tobrex |
| Tobrex | Tobradex |
| Topamax | Toprol-XL |
| Toprol-XL | Topamax |
| Toujeo | Tradjenta |
| Toujeo | Tresiba |
| Toujeo | Trulicity |
| t-PA | TNKase |
| Tracleer | Tricor |
| Tradjenta | Toujeo |
| Tradjenta | Tresiba |
| Tradjenta | Trulicity |
| traMADol | traZODone |
| trastuzumab | ado-trastuzumab emtansine |
| traZODone | traMADol |
| Tresiba | Tarceva |
| Tresiba | Toujeo |
| Tresiba | Tradjenta |
| Tresiba | Trulicity |
| tretinoin | ISOtretinoin |
| Tricor | Tracleer |
| Trulicity | Toujeo |
| Trulicity | Tradjenta |
| Trulicity | Tresiba |
| tuberculin purified protein derivative (PPD) | influenza virus vaccine |
| tuberculin purified protein derivative (PPD) | tetanus diphtheria toxoid (Td) |
| Tylenol | Tylenol PM |
| Tylenol PM | Tylenol |
| Ultram | lithium |
| valACYclovir | valGANciclovir |
| Valcyte | Valtrex |
| valGANciclovir | valACYclovir |
| Valtrex | Valcyte |
| Varivax | VZIG (varicella-zoster immune globulin) |
| vasopressin | desmopressin |
| Venofer | Vfend |
| Venofer | Vimpat |
| Vfend | Venofer |
| Vfend | Vimpat |
| Viagra | Allegra |
| Videx | Bidex |
| vigabatrin | dabigatran |
| Vimpat | Venofer |
| Vimpat | Vfend |
| vinBLAStine | vinCRIStine |
| vinCRIStine | vinBLAStine |
| Viracept | Viramune |
| Viramune | Viracept |
| VisionBlue | methylene blue |
| 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 |
| Zegerid | Zestril |
| Zelapar | ZyPREXAZydis |
| Zerit | ZyrTEC |
| Zestril | Zegerid |
| Zestril | Zetia |
| Zestril | ZyPREXA |
| Zetia | Zestril |
| Ziac | Tiazac |
| Zocor | Cozaar |
| Zocor | ZyrTEC |
| ZOLMitriptan | SUMAtriptan |
| zolpidem | Zyloprim |
| Zostrix | Zovirax |
| Zovirax | Zostrix |
| Zovirax | Zyvox |
| Zyloprim | zolpidem |
| ZyPREXA | CeleXA |
| ZyPREXA | Zestril |
| ZyPREXA | ZyrTEC |
| ZyPREXA Zydis | Zelapar |
| 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 | Zovirax |
Brand names always start with an upper case 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.