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In some countries, this medicine may only be approved for veterinary use.



CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Category

Anthelmintic agent

Chemical Name

Carbamic acid, [5-(phenylsulfinyl)-1H-benzimidazol-2-yl]-, metyl ester

Foreign Names

  • Oxfendazolum (Latin)
  • Oxfendazol (German)
  • Oxfendazole (French)
  • Oxfendazol (Spanish)

Generic Names

  • Oxfendazole (OS: BAN, USAN)
  • RS 8858 (IS: Syntex)
  • Oxfendazole (PH: BP vet. 2015, USP 38)
  • Oxfendazole for veterinary use (PH: Ph. Eur. 8)
  • Oxfendazole pour usage vétérinaire (PH: Ph. Eur. 8)
  • Oxfendazolum ad usum veterinarium (PH: Ph. Eur. 8)

Brand Names

  • Alliance (Oxfendazole and Abamectin, + Levamisole (veterinary use))
    MSD, New Zealand
  • Ammo Rotational (veterinary use)
    Ceva Animal Health, Australia
  • Autoworm (veterinary use)
    Zoetis, United Kingdom
  • Benzelmin (veterinary use)
    Jurox, Australia; Zoetis, United States
  • Benzelmin Plus (Oxfendazole and Metrifonate (veterinary use))
    Zoetis, United States
  • Bomatak (veterinary use)
    Bayer New Zealand, New Zealand; Bomac Animal Health, Australia
  • Bovex (veterinary use)
    Chanelle, Netherlands; Chanelle Animal Health, United Kingdom; Chanelle Pharmaceuticals Manufacturing, Ireland
  • Combifluke (Oxfendazole and Closantel (veterinary use))
    Norbrook Laboratories, Ireland
  • Dolthene (veterinary use)
    Merial, Belgium; Merial, France; Merial, Netherlands
  • Duotech (Oxfendazole and Closantel (veterinary use))
    Norbrook Laboratoires Ltd., Israel; Norbrook Laboratories, Ireland; Zoetis, France
  • Endoworm (veterinary use)
    Norbrook Laboratories, United Kingdom
  • Equinox (veterinary use)
    Value Plus Animal Health Care Products, Australia
  • Equitak (Oxfendazole and Abamectin, + Praziquantel (veterinary use))
    Bayer Australia Ltd Animal Health, Australia
  • Equitak Excel (Oxfendazole and Abamectin, + Praziquantel (veterinary use))
    Bayer New Zealand, New Zealand
  • Fendov (veterinary use)
    Zoetis Belgium, Belgium
  • Flukazole (Oxfendazole and Triclabendazole, + Selenium (veterinary use))
    Virbac, Australia
  • Flukazole (Oxfendazole and Triclabendazole (veterinary use))
    Virbac, South Africa
  • Flukecare +SE (Oxfendazole and Triclabendazole, + Sodium Selenate (veterinary use))
    Virbac, New Zealand
  • Interzol (veterinary use)
    Alvetra u. Werfft, Austria
  • Matrix for Sheep (Oxfendazole and Abamectin, + Levamisole (veterinary use))
    Merial, New Zealand
  • Oxazole (veterinary use)
    Jurox, Australia
  • Oxfen (veterinary use)
    Bayer AH, South Africa; Virbac, Australia
  • Oxfen C Plus (Oxfendazole and Selenium, + Levamisole (veterinary use))
    Merial, New Zealand
  • Oxfencare (veterinary use)
    Ancare Ireland, Ireland
  • Oxfenil (veterinary use)
    Virbac, Italy
  • Oxfenil 2.265% (veterinary use)
    Virbac, Germany; Virbac, France
  • Oxfenil 9.06% (veterinary use)
    Virbac, France
  • Parafend (Oxfendazole and Closantel (veterinary use))
    Norbrook, South Africa
  • Parafend (Oxfendazole and Cobalt, Selenium (veterinary use))
    Norbrook Laboratories, Ireland
  • Parafend (veterinary use)
    Norbrook, New Zealand; Norbrook, South Africa; Norbrook Laboratories, United Kingdom; Norbrook Laboratories, Ireland; Norbrook Laboratories Australia, Australia
  • Parafend Plus (Oxfendazole and Closantel (veterinary use))
    Norbrook Laboratories, Ireland
  • Repidose (veterinary use)
    Intervet, Netherlands; Intervet Ireland, Ireland
  • Repidose Farmintic (veterinary use)
    MSD Santé Animale Intervet, France
  • Scanda (Oxfendazole and Levamisole (veterinary use))
    MSD, New Zealand
  • Strategy-T (Oxfendazole and Pyrantel (veterinary use))
    Virbac, Australia; Virbac, New Zealand
  • Synanthic (veterinary use)
    Merial, France; Zoetis, United States
  • Synanthic 18.5% (veterinary use)
    Zoetis, United States
  • Synanthic 22.5% (veterinary use)
    Boehringer Ingelheim Vetmedica, United States
  • Synanthic 9.06% (veterinary use)
    Boehringer Ingelheim Vetmedica, United States
  • Systamex (veterinary use)
    Coopers Animal Health, Australia; MSD Animal Health, Switzerland; Orion Pharma Animal Health, Sweden; Pfizer Animal Health, Norway; Zoetis, Germany
  • Ultra-Mox (Oxfendazole and Moxidectin, + Praziquantel (veterinary use))
    Bayer New Zealand, New Zealand
  • Worma (Oxfendazole and Piperazine (veterinary use))
    International Animal Health, Australia
  • Worma (veterinary use)
    International Animal Health, Australia
  • Wormall (veterinary use)
    Coyle, Ireland
  • Wormout (Oxfendazole and Praziquantel (veterinary use))
    Vetafarm, Australia


BANBritish Approved Name
ISInofficial Synonym
OSOfficial Synonym
PHPharmacopoeia Name
Rec.INNRecommended International Nonproprietary Name (World Health Organization)
USANUnited States Adopted Name

Further information on drug naming conventions: International Nonproprietary Names.

Important Notice: The international database is in BETA release. This means it is still under development and may contain inaccuracies. It is not intended as a substitute for the expertise and judgement of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that the use of any medication in any country is safe, appropriate or effective for you. Consult with your healthcare professional before taking any medication.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.