Pamidronate Disodium
Also known as: Aredia, Aminomux, Aredronet, Ostepam, Pamidran
**Information for Pet Owners:** * **Hospitalization Required**: This medication must be given in a veterinary hospital setting. It is administered as a very slow intravenous (IV) drip, usually over 2 to 4 hours, to protect your pet's kidneys. * **Purpose**: Pamidronate is highly effective at lowering dangerously high blood calcium levels (often caused by certain cancers or toxins) and can significantly relieve severe bone pain associated with bone tumors (like osteosarcoma). * **Monitoring**: Your veterinarian will need to run blood and urine tests before each treatment to ensure your pet's kidneys are functioning well and to check electrolyte levels (like calcium and magnesium). * **Cost**: Because this is a specialized human hospital drug requiring intensive monitoring and slow IV administration, clients should be prepared for the associated costs of the medication and the required inpatient care.
Dosage must be set by your veterinarian for your specific pet. Never give human medication or another pet’s prescription without veterinary guidance.
What it is used for
- Control of hypercalcemia
- Refractory hypercalcemia
- Control of hypercalcemia
- Treatment of cholecalciferol-induced toxicosis
- Attempting to reduce bone pain associated with osteosarcoma in combination with an NSAID
- Pain associated with skeletal neoplasias
- Calcipotriene toxicosis
- Control of hypercalcemia
How it is given
Possible side effects
- Electrolyte abnormalities (hypomagnesemia, hypocalcemia, hypophosphatemia)
- Cardiac arrhythmias (secondary to electrolyte shifts)
- Renal toxicity (especially with rapid infusion)
- Transient bone pain
- Anemia
- Thrombocytopenia
- Granulocytosis
- Ophthalmic syndromes (e.g., scleritis - reported in humans)
Cautions & contraindications
- Hypersensitivity to pamidronate or other bisphosphonates
- Severe renal impairment (use with extreme caution; not tested in humans with serum creatinine > 5 mg/dL)
- **Important Warnings and Precautions:** * **Renal Toxicity**: Pamidronate can cause acute renal failure. The risk is minimized by ensuring adequate patient hydration and infusing the drug slowly over at least 2 to 4 hours. * **Fluid Compatibility**: **Do NOT mix** with any intravenous fluid containing calcium (e.g., Lactated Ringer's). Must be diluted in 0.9% NaCl, 0.45% NaCl, or D5W. * **Pregnancy**: FDA Category D. Has produced maternal and embryo/fetal toxicity in laboratory animals. Use only if benefits outweigh risks, with informed owner consent. * **Nursing**: Unknown if excreted in milk; use with caution. * **Electrolyte Shifts**: Can cause profound hypocalcemia and hypomagnesemia. Baseline and post-infusion monitoring is critical.
Drug interactions
- Calcium-affecting drugs (e.g., furosemide, corticosteroids): Can affect calcium levels; requires careful monitoring when used concurrently.
- Nephrotoxic drugs (e.g., cisplatin, aminoglycosides): Potential for increased risk of nephrotoxicity; use with caution.
Frequently asked questions
What is Pamidronate Disodium used for in pets?
**Information for Pet Owners:** * **Hospitalization Required**: This medication must be given in a veterinary hospital setting. It is administered as a very slow intravenous (IV) drip, usually over 2 to 4 hours, to protect your pet's kidneys. * **Purpose**: Pamidronate is highly effective at lowering dangerously high blood calcium levels (often caused by certain cancers or toxins) and can significantly relieve severe bone pain associated with bone tumors (like osteosarcoma). * **Monitoring**: Your veterinarian will need to run blood and urine tests before each treatment to ensure your pet's kidneys are functioning well and to check electrolyte levels (like calcium and magnesium). * **Cost**: Because this is a specialized human hospital drug requiring intensive monitoring and slow IV administration, clients should be prepared for the associated costs of the medication and the required inpatient care.
Is Pamidronate Disodium safe for my pet?
Dosage must be set by your veterinarian for your specific pet. Never give human medication or another pet’s prescription without veterinary guidance.
This article is for general education and is not a substitute for professional veterinary advice. If your pet is unwell, please consult a veterinarian.
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