Zoledronic acid injection
What is Zoledronic Acid Injection?
Zoledronic Acid Injection is a potent, third-generation bisphosphonate. It is a nitrogen-containing compound that specifically targets bone tissue. Unlike oral bisphosphonates, which can be difficult for the body to absorb and may cause esophageal irritation, the injectable form is administered intravenously, ensuring 100% bioavailability. It is widely utilized both in primary care for bone density management and in oncology for protecting the skeletal system from the effects of malignancy.
Uses of Zoledronic Acid Injection
Postmenopausal Osteoporosis: Used as a once-yearly infusion to increase bone mass and reduce the risk of hip and spinal fractures.
Hypercalcemia of Malignancy (HCM): Rapidly lowers dangerously high calcium levels in the blood caused by certain types of cancer.
Multiple Myeloma & Bone Metastases: Prevents "skeletal-related events" (SREs) such as pathological fractures, spinal cord compression, or the need for bone surgery/radiation in patients with advanced cancers.
Paget’s Disease of Bone: Provides long-term remission of this condition characterized by abnormal bone remodeling.
Glucocorticoid-Induced Osteoporosis: Protects bone density in patients requiring long-term steroid therapy.
How Does Zoledronic Acid Injection Work?
Zoledronic Acid works by inhibiting the action of osteoclasts, the specialized cells responsible for breaking down bone tissue. It attaches to the hydroxyapatite crystals in the bone matrix. When osteoclasts begin to resorb the bone, they "ingest" the drug, which then interferes with their internal enzymatic pathways (specifically the farnesyl pyrophosphate synthase enzyme). This leads to the inactivation and eventual death of the osteoclast, thereby slowing down bone loss and stabilizing the skeletal structure.
FAQs on Zoledronic Acid Injection
1. How often is the injection administered? The frequency depends on the condition. For osteoporosis, it is typically given once a year. For Paget’s disease, it may be a single dose. In oncology settings (bone metastases), it is usually administered every 3 to 4 weeks.
2. What are the common side effects? A common reaction is a "flu-like" syndrome (fever, muscle pain, headache) within the first three days of the infusion. This can usually be managed with paracetamol. A rare but serious side effect is Osteonecrosis of the Jaw (ONJ); therefore, patients are advised to complete major dental work before starting treatment.
3. Is kidney monitoring necessary? Yes. Zoledronic Acid is excreted primarily by the kidneys. Before every infusion, a blood test for Serum Creatinine must be performed to ensure the kidneys are functioning adequately to process the medication.
Therapeutic Category
Bisphosphonates (Bone Resorption Inhibitor)
Looking for a reliable Zoledronic Acid manufacturer? Contact Farbe Firma Pvt. Ltd. for dossier support, registration assistance, and export supplies. We provide high-quality oncology and bone-health injectables manufactured in our state-of-the-art sterile facility under strict WHO-GMP compliance.
Product Name
Zoledronic acid injection
Trade Name
Zolesyl
Available Strength
0.8 mg/ml
Packing
5 ml, 100 ml
Therapeutic Use
Treatment of osteoporosis, Paget's disease, and bone complications related to cancer.

















