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Josamycin (International)



ATC (Anatomical Therapeutic Chemical Classification)


CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Category

Antibacterial: Macrolide

Chemical Name

Leucomycin V, 3-acetate 4B-(3-metylbutanoate)

Foreign Names

  • Josamycinum (Latin)
  • Josamycin (German)
  • Josamycine (French)
  • Josamicina (Spanish)

Generic Names

  • Josamicina (OS: DCIT)
  • Josamycin (OS: JAN, USAN, BAN)
  • Josamycine (OS: DCF)
  • EN 141 (IS)
  • Leucomycin A₃ (IS)
  • Josamycin (PH: BP 2018, JP XVII, Ph. Eur. 9)
  • Josamycinum (PH: Ph. Eur. 9)
  • Josamycin Propinonate (OS: BANM, JAN)
  • JM-P (Yamanouchi) (IS)
  • Josamycin-2A-propionat (IS)
  • YS-20-P (IS)
  • Josamycin propionate (PH: Ph. Eur. 9)
  • Josamycin Propionate (PH: BP 2018, JP XVII)
  • Josamycini propionas (PH: Ph. Eur. 9)

Brand Names

  • Iosalide
    Astellas, Italy
  • Josalid 250 mg/5 ml für Kinder [pediatric]
    Sandoz, Austria
  • Josalid 375 mg/5 ml für Kinder [pediatric]
    Sandoz, Austria
  • Josalid 500 mg
    Sandoz, Austria
  • Josalid 750 mg
    Sandoz, Austria
  • Josamycin
    Astellas, Japan
  • Josamycin - Guanghua Pharm
    Guanghua Pharmaceutical, China
  • Josamycin - Minsheng Pharm
    Minsheng Pharmaceutical, China
  • Josamycin - Sine
    Sine Pharmaceutical, China
  • Josamycin - SuZhou No 1 Pharm
    Suzhou No.1 Pharm, China
  • Wilprafen
    Dragenopharm, Georgia; Famar Lyon, Georgia; Heinrich Mack, Lithuania
  • Wilprafen forte
    Heinrich Mack, Lithuania
  • Beibeisha
    Southwest Pharmaceutical, China
  • Cortifluoral [+ Diflucortolone]
    Bayer, Italy
  • Iosalide
    Astellas, Italy
  • Josacine
    Astellas, France
  • Josamina
    Ferrer Internacional, Spain
  • Josamy
    Astellas Pharma China, China
  • Josamy 10%
    Astellas, Japan
  • Josamy 3%
    Astellas, Japan


BANBritish Approved Name
BANMBritish Approved Name (Modified)
DCFDénomination Commune Française
DCITDenominazione Comune Italiana
ISInofficial Synonym
JANJapanese Accepted Name
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.