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Clodronate

Prescription
First-Generation Bisphosphonate
Last reviewed 21 Apr 2026 · PetCare.AI Editorial Team
Species
Dog, Cat
Brands
2 available
Formulations
2

Mechanism of action

Non-nitrogen-containing bisphosphonate that is metabolized to a toxic ATP analog within osteoclasts, causing osteoclast apoptosis and reducing bone resorption. Also has anti-inflammatory and analgesic properties on bone.

At a glance

Class
First-Generation Bisphosphonate
Schedule
Prescription
Storage
Store at room temperature below 25°C

Dosing

🐕

Dog

Off-label for bone pain from neoplasia, hypercalcemia of malignancy, and osteoly
Dose
20–25 mg/kg
Route
IV
Frequency
q28 days
🐈

Cat

Off-label for hypercalcemia and bone pain
Dose
25 mg/kg
Route
IV
Frequency
q28 days

Formulations

💊

Other — 2

Strength
Strength

Storage

Store at room temperature below 25°C

Safety

Monitoring parameters

Renal function before and after infusionSerum ionized calciumPhosphorusClinical pain response

Interactions

No documented interactions.

Brands

Other markets

Osphos (equine)
Bonefos

FAQs

Frequently asked questions

What is Clodronate?
Clodronate is a first-generation bisphosphonate used in pets. Non-nitrogen-containing bisphosphonate that is metabolized to a toxic ATP analog within osteoclasts, causing osteoclast apoptosis and reducing bone resorption. Also has anti-inflammatory and analgesic properties on bone.
What is Clodronate used for in pets?
Clodronate is used in veterinary medicine for: Off-label for bone pain from neoplasia, hypercalcemia of malignancy, and osteoly; Off-label for hypercalcemia and bone pain.
What is the Clodronate dose for dogs?
For dogs, Clodronate is typically dosed as follows — Off-label for bone pain from neoplasia, hypercalcemia of malignancy, and osteoly: 20–25 mg/kg IV q28 days. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.
What is the Clodronate dose for cats?
For cats, Clodronate is typically dosed as follows — Off-label for hypercalcemia and bone pain: 25 mg/kg IV q28 days. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.
Does Clodronate need a prescription?
Yes. Clodronate is a prescription medication and should only be administered under veterinary supervision.

References

References

Textbooks & handbooks

  • Plumb, D.C. Plumb's Veterinary Drug Handbook. 10th ed., Wiley-Blackwell, 2023.
  • Vail, D.M., Thamm, D.H., & Liptak, J.M. (eds.). Withrow & MacEwen's Small Animal Clinical Oncology. 6th ed., Saunders/Elsevier, 2020.
  • Riviere, J.E., & Papich, M.G. (eds.). Veterinary Pharmacology and Therapeutics. 10th ed., Wiley-Blackwell, 2018.
  • National Research Council. Nutrient Requirements of Dogs and Cats. National Academies Press, Washington DC, 2006.
  • The Merck Veterinary Manual. Merck & Co., Online edition. https://www.merckvetmanual.com/

Clinical guidelines & consensus

  • Fletcher, D.J., Boller, M., Brainard, B.M., et al. "RECOVER Evidence and Knowledge Gap Analysis on Veterinary CPR." Journal of Veterinary Emergency and Critical Care, 2012;22(S1):S102–S131.
  • American Animal Hospital Association. 2018 AAHA Diabetes Management Guidelines for Dogs and Cats. AAHA Press.

Journals & peer-reviewed studies

  • Hogan, D.F., Fox, P.R., Jacob, K., et al. "Secondary prevention of cardiogenic arterial thromboembolism in the cat: The FAT CAT study." Journal of Veterinary Cardiology, 2015;17(Suppl 1):S306–S317.
  • Boswood, A., Häggström, J., Gordon, S.G., et al. "Effect of Pimobendan in Dogs with Preclinical Myxomatous Mitral Valve Disease and Cardiomegaly: The EPIC Study — A Randomized Clinical Trial." Journal of Veterinary Internal Medicine, 2016;30(6):1765–1779.
  • ASPCA Animal Poison Control Center. Toxicology and Poison Management Guidelines. American Society for the Prevention of Cruelty to Animals. https://www.aspca.org/pet-care/animal-poison-control

Regulatory & approvals

  • Central Drugs Standard Control Organisation (CDSCO), Government of India. Veterinary Drug Approval Registry, 1969–2026. Directorate General of Health Services. https://cdsco.gov.in/

Databases

  • Washington State University, College of Veterinary Medicine. Veterinary Clinical Pharmacology Laboratory (VCPL) — MDR1 Multidrug Sensitivity Database. https://vcpl.vetmed.wsu.edu/
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 →