Polysulfated glycosaminoglycan

Polysulfated glycosaminoglycan
Chemical structure and packaging
Clinical data
Trade namesAdequan
AHFS/Drugs.comVeterinary Use
License data
Routes of
administration
Usually IM or IA
ATCvet code
  • none
Legal status
Legal status
Pharmacokinetic data
Protein binding30–40%
MetabolismRenal
Onset of action48 hours for peak levels in joints (IM)
Duration of action96 hours (IM)
ExcretionUrine
Identifiers
UNII
Chemical and physical data
Molar mass3,000–15,000 Da

Polysulfated glycosaminoglycan (PSGAG), sold under the brand name Adequan, is an injectable drug for dogs and horses that is used to alleviate the limpness, pain, and lowered range of motion caused by arthritis.[2] It is made of repeat disaccharide units (comprising hexosamine and hexuronic acid), and is similar to glycosaminoglycans already present in the cartilage; PSGAG thus easily integrates itself there.[3][4] In vitro studies have shown it to inhibit the enzymes that degrade cartilage and bone, as well as suppress inflammation and stimulate the synthesis of replacement cartilage. While it can cause an increased risk of bleeding, it is relatively safe and has a high LD50. PSGAG is one of the most widely prescribed joint treatments for horses.[5]

While it is widely used, some studies still show conflicting results in terms of efficacy, causing some to claim that PSGAG is not solely responsible for the significant mitigation of arthritis seen in success cases.[6]

  1. ^ Cite error: The named reference plumb was invoked but never defined (see the help page).
  2. ^ Goldberg ME (2014-10-23). Pain Management for Veterinary Technicians and Nurses. John Wiley & Sons. p. 140. ISBN 9781118811160.
  3. ^ Wanamaker BP, Massey K (2014-03-25). Applied Pharmacology for Veterinary Technicians – E-Book. Elsevier Health Sciences. p. 392. ISBN 9780323291705.
  4. ^ White GW (1988-11-01). "Adequan: A review for the practicing veterinarian". Journal of Equine Veterinary Science. 8 (6): 463–468. doi:10.1016/S0737-0806(88)80096-0. ISSN 0737-0806. Closed access icon
  5. ^ Bryant JO (2012-12-10). The USDF Guide to Dressage: The Official Guide of the United States Dressage Foundation. Storey Publishing. p. 285. ISBN 9781612122748.
  6. ^ Schulz K, Beale B, Holsworth I (2005). The Pet Lover's Guide to Canine Arthritis & Joint Problems. Elsevier Health Sciences. p. 192. ISBN 9781416026143.