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Sulfasalazine (International)

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

In the US, Sulfasalazine (sulfasalazine systemic) is a member of the following drug classes: 5-aminosalicylates, antirheumatics and is used to treat Alopecia, Crohn's Disease, Crohn's Disease - Acute, Crohn's Disease - Maintenance, Inflammatory Bowel Disease, Juvenile Rheumatoid Arthritis, Lymphocytic Colitis, Psoriatic Arthritis, Rheumatoid Arthritis, Ulcerative Colitis, Ulcerative Colitis - Active, Ulcerative Colitis - Maintenance and Uveitis.

US matches:



ATC (Anatomical Therapeutic Chemical Classification)


CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Categories

Disease-modifying antirheumatic drug, DMARD

Antibacterial: Sulfonamide

Chemical Name

Benzoic acid, 2-hydroxy-5-[[4-[(2-pyridinylamino)sulfonyl]phenyl]azo]-

Foreign Names

  • Sulfasalazinum (Latin)
  • Sulfasalazin (German)
  • Sulfasalazine (French)
  • Sulfasalazina (Spanish)

Generic Names

  • Salazosulfapyridine (OS: JAN)
  • Sulfasalazina (OS: DCIT)
  • Sulfasalazine (OS: USAN, BAN, DCF)
  • Azopyrin (IS)
  • Salicylazosulfapyridine (IS)
  • Salazosulfapyridine (PH: JP XVII)
  • Sulfasalazin (PH: Ph. Eur. 9.2)
  • Sulfasalazine (PH: BP 2018, Ph. Eur. 9.2, Ph. Int. 7, USP 41)
  • Sulfasalazinum (PH: Ph. Eur. 9.2, Ph. Int. 7)

Brand Names

  • Azulfidina
    Pfizer, Mexico
  • Azulfidine
    Laboratorio Pfizer de Chile, Chile; Pfizer, Argentina; Pfizer, Uruguay; Pfizer, Venezuela; Pharmacia, Germany; Pharmacia & Upjohn, United States
  • Azulfidine EN
    Pfizer Japan, Japan
  • Azulfidine RA
    Pfizer, Germany; Pharmacia, Germany
  • Azulfin
    Apsen, Brazil
  • Bomecon
    Fu Seng, Taiwan
  • Chang Jian Ning
    Qiangji Pharmaceutical Factory, China
  • Colo-Pleon
    Sanofi-Aventis Deutschland, Germany
  • Colopyrin
    Kahira, Egypt
  • Colosalazine EC
    Acdima, Egypt
  • Disalazin
    AC Farma, Peru
  • Eurozina-RE
    Eurolab, Chile
  • Falazine
    Indunidas, Ecuador
  • Flogostop
    Ivax, Argentina
  • Getsazine
    Unique Life Sciences, India
  • Iwata
    Cadila, India
  • Lazafin
    Novell Pharmaceutical, Indonesia
  • Pleon RA
    Sanofi, Germany
  • PMS-Sulfasalazine
    Pharmascience, Canada; Pharmascience, Singapore
  • PMS-Sulfasalazine EC
    Pharmascience, Canada
  • Pyralin EN
    Pfizer, Australia
  • Reumazin
    Aristopharma, Bangladesh
  • Saaz
    IPCA, India
  • Saaz-DS
    IPCA, India
  • Salasopyrine
    Pharmacia Upjohn, Oman
  • Salazar
    Cadila HC, India
  • Salazidin
    AC Helcor, Romania
  • Salazine
    Opsonin, Bangladesh; Sriprasit Pharma, Thailand; Taiwan Biotech, Taiwan
  • Salazobactin 500 mg voor honden [veterinary use]
    AST, Netherlands
  • Salazodin
    Haymann, Uruguay
  • Salazopirina
    Jaba, Portugal
  • Salazopyrin
    Kemwell AB, Israel; Pfizer, Australia; Pfizer, Bosnia & Herzegowina; Pfizer, Canada; Pfizer, Denmark; Pfizer, Finland; Pfizer, United Kingdom; Pfizer, Ireland; Pfizer, New Zealand; Pfizer, Poland; Pfizer, Sweden; Pfizer, Turkey; Pfizer, South Africa; Pfizer ApS, Iceland; Pfizer Consumer Healthcare, Malta; Pfizer Japan, Japan; Pfizer Pharmaceuticals Ltd, China; Pharmacia & Upjohn, Kuwait; Wallace, India; Pfizer, Lithuania
  • Salazopyrin 500 mg
    Pfizer, Austria
  • Salazopyrin 500mg
    Pfizer PFE, Switzerland
  • Salazopyrin EN
    Kemwell AB, Israel; Pfizer, Australia; Pfizer, Czech Republic; Pfizer, United Kingdom; Pfizer, Ireland; Pfizer, Malaysia; Pfizer, New Zealand; Pfizer, Sweden; Pfizer, Singapore; Pfizer, Taiwan; Pfizer ApS, Iceland; Phrmcia, Egypt; Kemwell, Serbia; Pfizer, Canada; Pfizer, Estonia; Pfizer, Finland; Pfizer, Hong Kong; Pfizer, Croatia (Hrvatska); Pfizer, Norway; Pfizer, Thailand
  • Salazopyrin EN 500 mg
    Pfizer, Hungary
  • Salazopyrin EN 500mg
    Pfizer PFE, Switzerland
  • Salazopyrina
    Pfizer, Spain
  • Salazopyrine
    Pfizer, Belgium; Pfizer, France; Pfizer, Netherlands; Pfizer, Tunisia; Pharmacia, Lebanon
  • Salazopyrine E.C.
    Pfizer, Belgium; Pfizer, Netherlands
  • Salazopyrine E.C. 500mg
    Pfizer, Luxembourg
  • Salazopyrin-EN
    Pfizer Italia, Italy
  • Salazosulfapyridine
    Choseido Pharmaceutical, Japan; Daiko Seiyaku, Japan; Nichi-Iko Pharmaceutical, Japan; Shiono Kemikaru, Japan; Takeda Teva Pharma, Japan
  • Salazosulfapyridine [veterinary use]
    Kombivet, Netherlands
  • Salivon
    Pharos, Indonesia
  • Salopyrine
    Adelco, Greece
  • Sarazopyrin
    Ilsung, South Korea
  • Saridine-E
    Atlantic Lab, Hong Kong; Atlantic Lab, Thailand
  • Sazo
    Wallace, India
  • Sulazine EC
    Chatfield Pharmaceuticals, Cyprus
  • Sulcolon
    Bernofarm, Indonesia
  • Sulfacol
    Drug International, Bangladesh
  • Sulfasalazin
    Krka, Georgia
  • Sulfasalazin EN
    Krka, Bosnia & Herzegowina; Krka, Bulgaria; Krka, Romania
  • Sulfasalazin EN Krka
    Krka, Poland
  • Sulfasalazin HEXAL
    Hexal, Germany; Hexal, Denmark
  • Sulfasalazin K
    Krka, Czech Republic
  • Sulfasalazin K-EN
    Krka, Czech Republic
  • Sulfasalazin Krka
    Krka, Latvia; Krka, Macedonia; Krka, Poland
  • Sulfasalazin medac
    Medac, Denmark; Medac, Sweden; medac, Germany
  • Sulfasalazina
    Recipe, Colombia
  • Sulfasalazina Pharma Arte
    Pharma Arte, Paraguay
  • Sulfasalazine
    P & D, Malta; Rosemont Pharmaceuticals, United Kingdom; Vintage, United States; Watson Pharmaceutical, United States
  • Sulfasalazine Krka
    Krka, Lithuania
  • Sulfasalazine Mylan
    Mylan, Netherlands
  • Sulfasalazine Sandoz
    Sandoz, Netherlands
  • Sulfasalazine Teva
    Teva Pharma, Netherlands
  • Sulfasalazine-En
    Krka, Slovakia
  • Sulfasalazin-EN
    Krka, Georgia
  • Sulfasalazin-Heyl
    Heyl, Germany; Heyl, Malta
  • SulfasalazinKrka EN
    Krka, Croatia (Hrvatska)
  • Sulfasalazino 500 mg Endokrininiai preparatai
    Endokrininiai preparatai, Lithuania
  • Sulfitis
    Fahrenheit, Indonesia
  • Weiliufen
    Sunve, China
  • Zopyrin
    Hanlim, South Korea; Hanlim Pharm, Hong Kong


BANBritish Approved Name
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.