Pamidronate Sol3mg/ml, 10ml
Overview
What is this medicine?
How to Use This Medicine
For proper storage and disposal of this medication, consult with your doctor, nurse, or pharmacist if you need to keep it at home. They will provide guidance on how to store it safely.
If you miss a dose, contact your doctor immediately to determine the best course of action.
Lifestyle & Tips
- Maintain good oral hygiene and have regular dental check-ups. Inform your dentist that you are receiving pamidronate.
- Report any jaw pain, swelling, or numbness immediately.
- Report any new or unusual pain in your thigh, hip, or groin area.
- Ensure adequate hydration, especially during and after infusions, as directed by your healthcare provider.
- Take calcium and vitamin D supplements as recommended by your doctor, especially if you are at risk for low calcium levels.
Available Forms & Alternatives
Dosing & Administration
Adult Dosing
Condition-Specific Dosing:
Pediatric Dosing
Dose Adjustments
Renal Impairment:
Hepatic Impairment:
Pharmacology
Mechanism of Action
Pharmacokinetics
Absorption:
Distribution:
Elimination:
Pharmacodynamics
Safety & Warnings
Side Effects
Although rare, some people may experience severe and potentially life-threatening side effects while taking this medication. If you notice any of the following symptoms, contact your doctor immediately or seek emergency medical attention:
Signs of an allergic reaction: rash, hives, itching, red, swollen, blistered, or peeling skin (with or without fever), wheezing, tightness in the chest or throat, difficulty breathing, swallowing, or talking, unusual hoarseness, or swelling of the mouth, face, lips, tongue, or throat.
Signs of kidney problems: inability to urinate, changes in urine output, blood in the urine, or sudden weight gain.
Signs of electrolyte imbalance: mood changes, confusion, muscle pain, cramps, or spasms, weakness, shakiness, balance problems, abnormal heartbeat, seizures, loss of appetite, or severe nausea and vomiting.
Signs of high blood pressure: severe headache, dizziness, fainting, or changes in vision.
Signs of a urinary tract infection (UTI): blood in the urine, painful or burning urination, frequent or urgent need to urinate, fever, lower abdominal pain, or pelvic pain.
Signs of low thyroid levels: constipation, sensitivity to cold, memory problems, mood changes, or abnormal sensations such as burning, numbness, or tingling.
Vomiting blood or coffee ground-like material.
Black, tarry, or bloody stools.
Rapid or irregular heartbeat.
Fever.
Shortness of breath.
Swelling.
Important Warnings
This medication may increase the risk of fractures, particularly in the leg. Inform your doctor if you experience any new or unusual pain in the groin, hip, or thigh area. Additionally, this medication may cause jawbone problems, especially with prolonged use, cancer, dental issues, ill-fitting dentures, anemia, blood clotting disorders, or infections. The risk may also be higher if you undergo dental procedures, chemotherapy, radiation, or take other medications that can affect the jawbone. Discuss these potential risks with your doctor, and seek medical attention immediately if you experience jaw swelling or pain.
Other Possible Side Effects
While many people may not experience any side effects or only mild ones, it is essential to be aware of the following potential side effects:
Constipation, stomach pain, nausea, vomiting, or decreased appetite.
Back, bone, joint, or muscle pain.
Dizziness, drowsiness, fatigue, or weakness.
Headache.
Excessive sweating.
Sleep disturbances.
Cough.
Runny nose.
* Irritation at the injection site.
If you experience any of these side effects or any other unusual symptoms, contact your doctor for advice. You can also report side effects to the FDA at 1-800-332-1088 or online at https://www.fda.gov/medwatch.
Seek Immediate Medical Attention If You Experience:
- Jaw pain, swelling, numbness, or exposed bone in the mouth (signs of osteonecrosis of the jaw)
- New or unusual pain in your thigh, hip, or groin (signs of an atypical femur fracture)
- Muscle cramps, spasms, numbness or tingling around the mouth, fingers, or toes (signs of low calcium)
- Severe bone, joint, or muscle pain
- Changes in urination, swelling in legs/ankles (signs of kidney problems)
- Eye pain, redness, or vision changes
Before Using This Medicine
It is essential to inform your doctor about the following:
Any allergies you have, including allergies to this medication, its components, or other substances, such as foods or drugs. Be sure to describe the symptoms you experienced as a result of the allergy.
If you have kidney disease, as this may affect your ability to take this medication.
This list is not exhaustive, and it is crucial to discuss all your health conditions and medications with your doctor. Please provide your doctor and pharmacist with a comprehensive list of:
All prescription and over-the-counter (OTC) medications you are taking
Any natural products or vitamins you are using
* Your complete medical history, including any health problems you are experiencing
Before starting, stopping, or changing the dose of any medication, including this one, you must consult with your doctor to ensure your safety. It is vital to verify that it is safe to take this medication in combination with all your other medications and health conditions.
Precautions & Cautions
To maintain good oral health, practice proper dental care and schedule regular dental check-ups. Additionally, follow your doctor's instructions regarding calcium and vitamin D supplementation to support your bone health.
Be aware that this medication may cause kidney problems, including kidney failure, in some individuals. If you have a history of kidney issues, notify your doctor promptly.
If you are pregnant or become pregnant while taking this medication, contact your doctor immediately, as it may pose a risk to the unborn baby.
If you are breast-feeding, consult your doctor to discuss any potential risks to your baby and determine the best course of action.
Overdose Information
Overdose Symptoms:
- Significant hypocalcemia (e.g., paresthesias, tetany, seizures)
- Renal dysfunction (e.g., increased serum creatinine)
- Hypophosphatemia
- Hypomagnesemia
What to Do:
Seek immediate medical attention. Management involves correcting hypocalcemia with intravenous calcium gluconate, monitoring renal function, and correcting other electrolyte imbalances. Call 1-800-222-1222 (Poison Control).
Drug Interactions
Major Interactions
- Thalidomide (increased risk of renal dysfunction in multiple myeloma patients)
- Other nephrotoxic drugs (e.g., aminoglycosides, loop diuretics, NSAIDs) - increased risk of renal toxicity
Moderate Interactions
- Calcium-containing products (e.g., calcium supplements, antacids) - may interfere with calcium-lowering effect
- Magnesium-containing products (e.g., magnesium supplements, antacids) - may interfere with calcium-lowering effect
- Phosphate-containing products (e.g., phosphate supplements) - may interfere with calcium-lowering effect
Monitoring
Baseline Monitoring
Rationale: To assess baseline renal function, as pamidronate is renally eliminated and can cause renal toxicity.
Timing: Prior to initiation of therapy.
Rationale: To establish baseline calcium levels and guide dosing for hypercalcemia.
Timing: Prior to initiation of therapy.
Rationale: Pamidronate can cause hypophosphatemia, hypomagnesemia, and hypokalemia.
Timing: Prior to initiation of therapy.
Rationale: To identify risk factors for osteonecrosis of the jaw (ONJ) and address any dental issues before starting therapy.
Timing: Prior to initiation of therapy, especially for patients with cancer.
Routine Monitoring
Frequency: Before each dose and periodically during treatment.
Target: Within patient's normal range or stable.
Action Threshold: Significant increase (e.g., >0.5 mg/dL from baseline or >1.0 mg/dL in patients with normal baseline SCr) may require dose adjustment, slower infusion, or discontinuation.
Frequency: Before each dose and periodically during treatment (e.g., weekly for hypercalcemia, monthly for bone metastases).
Target: Normal range (8.5-10.2 mg/dL) or target for hypercalcemia resolution.
Action Threshold: Hypocalcemia (<8.5 mg/dL) may require calcium supplementation; persistent hypercalcemia may require repeat dosing.
Frequency: Before each dose and periodically during treatment.
Target: Within normal ranges.
Action Threshold: Hypophosphatemia, hypomagnesemia, or hypokalemia may require electrolyte supplementation.
Symptom Monitoring
- Signs and symptoms of hypocalcemia (e.g., paresthesias, muscle cramps, tetany, seizures)
- Signs and symptoms of osteonecrosis of the jaw (ONJ) (e.g., jaw pain, swelling, numbness, feeling of heaviness in the jaw, exposed bone)
- New or unusual pain in the thigh, hip, or groin (may indicate atypical femur fracture)
- Signs of infusion-related reactions (e.g., fever, flu-like symptoms, bone/joint/muscle pain)
- Signs of ocular inflammation (e.g., conjunctivitis, uveitis, scleritis)
Special Patient Groups
Pregnancy
Pamidronate is classified as Pregnancy Category D. It can cause fetal harm when administered to a pregnant woman. Bisphosphonates are incorporated into the bone matrix and gradually released over years. The amount of bisphosphonate incorporated into maternal bone is directly related to the total dose and duration of bisphosphonate use. There is a theoretical risk of fetal harm (e.g., hypocalcemia, skeletal abnormalities) if a woman becomes pregnant after completing a bisphosphonate course.
Trimester-Specific Risks:
Lactation
It is not known whether pamidronate is excreted in human milk. Due to the potential for serious adverse reactions in nursing infants, a decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother. Generally not recommended.
Pediatric Use
Safety and effectiveness in pediatric patients have not been established for approved indications. However, pamidronate has been used off-label in pediatric patients for severe hypercalcemia and osteogenesis imperfecta. Close monitoring of renal function and electrolytes is crucial due to limited data and potential for adverse effects.
Geriatric Use
No overall differences in safety or effectiveness have been observed between elderly and younger patients, but greater sensitivity of some older individuals cannot be ruled out. Renal function should be monitored closely in elderly patients, as they are more likely to have decreased renal function.
Clinical Information
Clinical Pearls
- Always ensure adequate hydration before and during pamidronate infusion to minimize the risk of renal toxicity.
- Infuse pamidronate slowly over the recommended duration (e.g., 2-4 hours for 90 mg) to reduce the risk of renal impairment and infusion-related reactions (e.g., fever, flu-like symptoms).
- Correct pre-existing hypocalcemia, hypophosphatemia, or hypomagnesemia before initiating pamidronate therapy.
- Patients should maintain good oral hygiene and have regular dental check-ups. Any invasive dental procedures should be avoided during treatment if possible, especially in cancer patients.
- Educate patients to report any new or unusual pain in the thigh, hip, or groin, as this could be a sign of an atypical femur fracture.
- For hypercalcemia of malignancy, the full calcium-lowering effect may not be observed for 4-7 days after treatment. Repeat doses should not be given sooner than 7 days.
Alternative Therapies
- Other bisphosphonates (e.g., Zoledronic acid, Ibandronate, Alendronate)
- Denosumab (monoclonal antibody, RANKL inhibitor)
- Calcitonin (for acute hypercalcemia)
- Cinacalcet (for hypercalcemia in primary hyperparathyroidism or parathyroid carcinoma)
- Glucocorticoids (for hypercalcemia associated with certain malignancies)