Glucosamine provides substrate for glycosaminoglycan synthesis in cartilage matrix; chondroitin sulfate inhibits cartilage-degrading enzymes and supports water retention in cartilage
At a glance
Class
Nutraceutical joint supplement (chondroprotective)
Storage
Store below 25°C, protect from moisture
Dosing
Osteoarthritis / Joint health maintenance / Post-surgical joint support
Dose
20–30 mg glucosamine/kg
Frequency
SID (loading dose BID for 4–6 weeks)
Duration: Long-term; 4–8 weeks for noticeable effect
Osteoarthritis / Joint health
Dose
100–125 mg per cat (glucosamine)
Duration: Long-term
Educational reference only
This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet.
Find a vet near you →Safety
Shellfish allergy (glucosamine from shellfish sources)
Use non-shellfish source if concerned
Diabetes mellitus
Glucosamine may affect insulin sensitivity (clinical significance debated)
Adverse effects
Serious
None well-documented at therapeutic doses
Lameness scoringJoint mobility assessmentBody weight
Educational reference only
This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet.
Find a vet near you →Interactions
No documented interactions.
FAQs
Frequently asked questions
›What is Glucosamine + Chondroitin?
Glucosamine + Chondroitin is a nutraceutical joint supplement (chondroprotective) used in pets. Glucosamine provides substrate for glycosaminoglycan synthesis in cartilage matrix; chondroitin sulfate inhibits cartilage-degrading enzymes and supports water retention in cartilage
›What is Glucosamine + Chondroitin used for in pets?
Glucosamine + Chondroitin is used in veterinary medicine for: Osteoarthritis / Joint health maintenance / Post-surgical joint support; Osteoarthritis / Joint health.
›What is the Glucosamine + Chondroitin dose for dogs?
For dogs, Glucosamine + Chondroitin is typically dosed as follows — Osteoarthritis / Joint health maintenance / Post-surgical joint support: 20–30 mg glucosamine/kg PO SID (loading dose BID for 4–6 weeks). Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.
›What is the Glucosamine + Chondroitin dose for cats?
For cats, Glucosamine + Chondroitin is typically dosed as follows — Osteoarthritis / Joint health: 100–125 mg per cat (glucosamine) PO SID. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.
›What are the side effects of Glucosamine + Chondroitin?
Common: Mild GI upset, Soft stools. Serious (call your vet immediately): None well-documented at therapeutic doses.
›Does Glucosamine + Chondroitin need a prescription?
Glucosamine + Chondroitin is available over the counter. Even so, you should consult your veterinarian before giving any medication to your pet.
Educational reference only
This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet.
Find a vet near you →References
References
The PetCare.AI drug reference is built from 13 authoritative sources cited across 580 drug monographs.
Textbooks & handbooks — 5
- Plumb's Veterinary Drug Handbook
- Withrow & MacEwen's Small Animal Clinical Oncology
- Merck Veterinary Manual
- NRC Nutrient Requirements of Dogs and Cats
- Veterinary Pharmacology and Therapeutics (Riviere & Papich)
Clinical guidelines & consensus — 4
- ASPCA Animal Poison Control Center Guidelines
- AAHA Diabetes Management Guidelines
- ASPCA Poison Control Guidelines
- RECOVER CPR Guidelines
Journals & peer-reviewed studies — 2
- EPIC Study (J Vet Intern Med 2016)
- JVIM FAT CAT Study
Regulatory & approvals — 1
- CDSCO Veterinary Drug Approval Registry (1969–2026)
Databases — 1
- Washington State University VCPL MDR1 Database