-
1.
The United States Pharmacopeial Convention. Compendial nomenclature. www.usp.org/health-quality-safety/compendial-nomenclature?gclid=EAIaIQobChMIzqn3ncmH4QIVAatpChimjA5dEAAYASAAEgLujPD_BwE (accessed 2019 Mar 18).
-
2.
The United States Pharmacopeial Convention. Nomenclature guidelines. www.uspnf.com/sites/default/files/usp_pdf/EN/USPNF/nom_guidelines.pdf?_gac=1.216670754.1552770605.EAIaIQobChMIzqn3nc-mH4QIVAatpChimjA5dEAAYASAAEgLujPD_BwE (accessed 2019 Mar 18).
-
3.
US Food and Drug Administration. Medication errors related to CDER-regulated drug products. www.fda.gov/Drugs/DrugSafety/MedicationErrors/default.htm (accessed 2019 Mar 18).
-
4.
US Food and Drug Administration. Drug name review. www.fda.gov/Drugs/ResourcesForYou/HealthProfessionals/ucm368620.htm (accessed 2019 Mar 18).
-
5.
National Institutes of Health; US National Library of Medicine. Drug information portal: generic name stems. https://druginfo.nlm.nih.gov/drugportal/jsp/drugportal/DrugNameGenericStems.jsp (accessed 2019 Mar 18).
-
6.
American Medical Association. United States adopted names approved stems. www.ama-assn.org/about/united-states-adopted-names/united-states-adopted-names-approved-stems (accessed 2019 Mar 18).
-
7.
American Medical Association. United States adopted names naming guidelines. www.ama-assn.org/about/united-states-adopted-names/united-states-adopted-names-naming-guidelines (accessed 2019 Mar 18).
-
8.
American Medical Association. United States adopted names: monoclonal antibodies. www.ama-assn.org/about/united-states-adopted-names/monoclonal-antibodies (accessed 2019 Mar 18).
-
9.
US Department of Health and Human Services; US Food and Drug Administration. Nonproprietary naming of biological products: guidance for industry. www.fda.gov/downloads/Drugs/GuidanceComplianceRegulatoryInformation/Guidances/UCM459987.pdf (accessed 2019 Mar 18).
-
10.
American Medication Association. United States adopted names: pronunciation guide. www.ama-assn.org/about/united-states-adopted-names/pronunciation-guide (accessed 2019 Mar 18).
Appendix B: Confusing Drug Names
in Manual for Pharmacy Technicians
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.
| Confused Drug Names | |
|---|---|
| Abelcet | amphotericin B |
| Accupril | Aciphex |
| 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 | Inderal |
| Adderall | Adderall XR |
| 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 | 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 |
| 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 | Prandin |
*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.
| Confused Drug Names | |
|---|---|
| Avandia | Coumadin |
| AVINza | INVanz |
| AVINza | Evista |
| 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) |
| 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 |
| 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 |
| CeleBREX | CeleXA |
| CeleBREX | Cerebyx |
| CeleXA | ZyPREXA |
| CeleXA | CeleBREX |
| CeleXA | Cerebyx |
| Cerebyx | CeleBREX |
| Cerebyx | CeleXA |
| cetirizine | sertraline |
| cetirizine | stavudine |
| chlordiazePOXIDE | chlorproMAZINE |
| chlorproMAZINE | chlordiazePOXIDE |
| chlorproMAZINE | chlorproPAMIDE |
| chlorproPAMIDE | chlorproMAZINE |
| Cidex | Cedax |
| CISplatin | CARBOplatin |
| Claritin (loratadine) | Claritin Eye (ketotifen fumarate) |
| Claritin-D | Claritin-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.
| Confused Drug Names | |
|---|---|
| Claritin-D 24 | Claritin-D |
| Claritin Eye (ketotifen fumarate) | Claritin (loratadine) |
| Clindesse | Clindets |
| Clindets | Clindesse |
| clobazam | clonazePAM |
| clomiPHENE | clomiPRAMINE |
| clomiPRAMINE | clomiPHENE |
| clonazePAM | clobazam |
| clonazePAM | cloNIDine |
| clonazePAM | LORazepam |
| cloNIDine | clonazePAM |
| cloNIDine | KlonoPIN |
| 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 |
| cyclophosphamide | cycloSPORINE |
| cycloSERINE | cycloSPORINE |
| cycloSPORINE | cyclophosphamide |
| cycloSPORINE | cycloSERINE |
| Cymbalta | Symbyax |
| 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 |
| Desyrel | SEROquel |
| dexmethylphenidate | methadone |
| Diabenese | Diamox |
| Diabeta | Zebeta |
| Diamox | Diabenese |
| Diflucan | Diprivan |
| Dilacor XR | Pilocar |
| Dilaudid | Dilaudid-5 |
| Dilaudid-5 | Dilaudid |
| dimenhyDRINATE | diphenhydrAMINE |
| diphenhydrAMINE | dimenhyDRINATE |
| Dioval | Diovan |
| Diovan | Dioval |
| Diovan | Zyban |
| Diovan | Darvon |
| Diprivan | Diflucan |
| Diprivan | Ditropan |
| disopyramide | desipramine |
| Ditropan | Diprivan |
| DOBUTamine | DOPamine |
| DOPamine | DOBUTamine |
*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.
| Confused Drug Names | |
|---|---|
| Doribax | Zovirax |
| Doxil | Paxil |
| DOXOrubicin | DAUNOrubicin |
| DOXOrubicin | DOXOrubicin liposomal |
| DOXOrubicin | IDArubicin |
| DOXOrubicin liposomal | DOXOrubicin |
| Dulcolax (bisacodyl) | Dulcolax (docusate sodium) |
| Dulcolax (docusate sodium) | Dulcolax (bisacodyl) |
| DULoxetine | FLUoxetine |
| 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 | Enablex |
| Effexor XR | Effexor |
| 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 |
| flumazenil | influenza virus vaccine |
| FLUoxetine | PARoxetine |
| FLUoxetine | DULoxetine |
| FLUoxetine | Loxitane |
| fluvoxaMINE | flavoxATE |
| 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 |
*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.
| Confused Drug Names | |
|---|---|
| Fortical | Foradil |
| 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 | hydrOXYzine |
| Hydrea | Lyrica |
| HYDROcodone | oxyCODONE |
| Hydrogesic | hydrOXYzine |
| HYDROmorphone | morphine |
| hydrOXYzine | Hydrogesic |
| hydrOXYzine | hydrALAZINE |
| IDArubicin | DAUNOrubicin |
| IDArubicin | DOXOrubicin |
| 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 |
*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.
| Confused Drug Names | |
|---|---|
| Kapidex | Casodex |
| Kapidex | Kadian |
| Keflex | Keppra |
| Keppra | Kaletra |
| Keppra | Keflex |
| Ketalar | ketorolac |
| ketorolac | Ketalar |
| ketorolac | methadone |
| Kineret | Amikin |
| KlonoPIN | cloNIDine |
| Kuric | Carac |
| Kwell | Qwell |
| LaMICtal | LamISIL |
| LamISIL | LaMICtal |
| lamiVUDine | lamoTRIgine |
| 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 | Myleran |
| Leukeran | leucovorin calcium |
| Levaquin | Lariam |
| Levbid | Enbrel |
| levETIRAcetam | lamoTRIgine |
| Levemir | Lovenox |
| levETIRAcetam | levOCARNitine |
| levETIRAcetam | levofloxacin |
| levOCARNitine | levETIRAcetam |
| levofloxacin | levETIRAcetam |
| levoleucovorin | leucovorin calcium |
| levothyroxine | lamoTRIgine |
| levothyroxine | Lanoxin |
| levothyroxine | liothyronine |
| Lexapro | Loxitane |
| Lexiva | Pexeva |
| 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 | Lexapro |
| Loxitane | FLUoxetine |
| Loxitane | Soriatane |
| Lunesta | Neulasta |
| Lupron Depot-3 Month | Lupron Depot-Ped |
| Lupron Depot-Ped | Lupron Depot-3 Month |
| Luvox | Lasix |
*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.
| Confused Drug Names | |
|---|---|
| Lyrica | Hydrea |
| Lyrica | Lopressor |
| Maalox | Maalox Total Stomach Relief |
| Maalox Total Stomach Relief | Maalox |
| Matulane | Materna |
| Materna | Matulane |
| Maxzide | Microzide |
| 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 | Mephyton |
| methadone | Metadate |
| methadone | Metadate ER |
| methadone | methylphenidate |
| methadone | metolazone |
| Methergine | Brethine |
| methimazole | metolazone |
| methylene blue | VisionBlue |
| methylphenidate | methadone |
| metolazone | methadone |
| metolazone | methimazole |
| metoprolol succinate | metoprolol tartrate |
| metoprolol tartrate | metoprolol succinate |
| metroNIDAZOLE | metFORMIN |
| Mevacor | Benicar |
| Micronase | Microzide |
| Microzide | Maxzide |
| Microzide | Micronase |
| midodrine | Midrin |
| Midrin | midodrine |
| 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 | Mucinex Allergy |
| Mucinex | Mucomyst |
| Mucinex Allergy | Mucinex |
| 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) |
| Neulasta | Lunesta |
| Neulasta | Neumega |
| Neulasta | Nuedexta |
*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.
| Confused Drug Names | |
|---|---|
| Neumega | Neupogen |
| Neumega | Neulasta |
| Neupogen | Neumega |
| Neurontin | Motrin |
| Neurontin | Noroxin |
| Neutra-Phos-K | K-Phos Neutral |
| NexAVAR | NexIUM |
| NexIUM | NexAVAR |
| niCARdipine | NIFEdipine |
| NIFEdipine | niCARdipine |
| NIFEdipine | niMODipine |
| niMODipine | NIFEdipine |
| 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 |
| oxyCODONE | HYDROcodone |
| oxyCODONE | OxyCONTIN |
| OxyCONTIN | MS Contin |
| OxyCONTIN | oxyCODONE |
| 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 | FLUoxetine |
| PARoxetine | piroxicam |
| Patanol | Platinol |
| Pavulon | Peptavlon |
| Paxil | Doxil |
| Paxil | Taxol |
| Paxil | Plavix |
| PAZOPanib | PONATinib |
| PEMEtrexed | PRALAtrexate |
| penicillin | penicillAMINE |
| penicillAMINE | penicillin |
| Peptavlon | Pavulon |
*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.
| Confused Drug Names | |
|---|---|
| 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 |
| 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 | PROzac |
| propylthiouracil | Purinethol |
| 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 |
| Rapaflo | Rapamune |
| Rapamune | Rapaflo |
| Razadyne | Rozerem |
| Recombivax HB | Comvax |
| Regranex | Granulex |
| Reminyl | Robinul |
| Reminyl | Amaryl |
| Renagel | Renvela |
| Renvela | Renagel |
*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.
| Confused Drug Names | |
|---|---|
| Reprexain | ZyPREXA |
| Restoril | RisperDAL |
| Retrovir | ritonavir |
| Rifadin | Rifater |
| Rifamate | rifampin |
| rifampin | Rifamate |
| rifampin | rifaximin |
| Rifater | Rifadin |
| rifaximin | rifampin |
| RisperDAL | Restoril |
| risperiDONE | rOPINIRole |
| Ritalin | ritodrine |
| Ritalin LA | Ritalin SR |
| Ritalin SR | Ritalin LA |
| ritodrine | Ritalin |
| ritonavir | Retrovir |
| riTUXimab | inFLIXimab |
| Robinul | Reminyl |
| rOPINIRole | risperiDONE |
| Roxanol | Roxicodone Intensol |
| Roxanol | Roxicet |
| 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 |
| 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 | Zonegran |
| Singulair | SINEquan |
| sirolimus | silodosin |
| sitaGLIPtin | SUMAtriptan |
| sodium acetate | potassium acetate |
| Solu-CORTEF | Solu-MEDROL |
| Solu-MEDROL | Depo-Medrol |
| Solu-MEDROL | Solu-CORTEF |
| Sonata | Soriatane |
| 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 |
*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.
| Confused Drug Names | |
|---|---|
| sulfADIAZINE | sulfiSOXAZOLE |
| sulfaSALAzine | sulfADIAZINE |
| sulfiSOXAZOLE | sulfADIAZINE |
| SUMAtriptan | sitaGLIPtin |
| SUMAtriptan | ZOLMitriptan |
| Symbyax | Cymbalta |
| T-Gel | Bio-T-Gel |
| Tambocor | Pamelor |
| Taxol | Taxotere |
| Taxol | Paxil |
| Taxotere | Taxol |
| TEGretol | TEGretol XR |
| TEGretol | Tequin |
| TEGretol | TRENtal |
| TEGretol XR | TEGretol |
| Tenex | Xanax |
| Tequin | TEGretol |
| Tequin | Ticlid |
| Testoderm TTS | Testoderm |
| Testoderm TTS | Testoderm with Adhesive |
| Testoderm with Adhesive | Testoderm |
| Testoderm with Adhesive | Testoderm TTS |
| Testoderm | Testoderm TTS |
| Testoderm | Testoderm with Adhesive |
| 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 |
| Tobradex | Tobrex |
| Tobrex | Tobradex |
| TOLAZamide | TOLBUTamide |
| TOLBUTamide | TOLAZamide |
| Topamax | Toprol-XL |
| Toprol-XL | Topamax |
| Toradol | Foradil |
| t-PA | TNKase |
| Tracleer | Tricor |
| traMADol | traZODone |
| trastuzumab | ado-trastuzumab emtansine |
| traZODone | traMADol |
| TRENtal | TEGretol |
| tretinoin | ISOtretinoin |
| Tricor | Tracleer |
| tromethamine | Trophamine |
| Trophamine | tromethamine |
| 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) |
| Vesanoid | Vesicare |
| Vesicare | Vesanoid |
| Vexol | Vosol |
| Viagra | Allegra |
| Videx | Bidex |
| vinBLAStine | vinCRIStine |
*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.
| Confused Drug Names | |
|---|---|
| vinCRIStine | vinBLAStine |
| Viokase | Viokase 8 |
| Viokase 8 | Viokase |
| Vioxx | Zyvox |
| Viracept | Viramune |
| Viramune | Viracept |
| Viramune (nevirapine) | Viramune (herbal product) |
| Viramune (herbal product) | Viramune (nevirapine) |
| VisionBlue | methylene blue |
| 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 |
| 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 | Zyvox |
| Zovirax | Zostrix |
| 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 |
*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.
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