Bonmax PTH Injection
Brand Name: Bonmax
Molecule: Teriparatide
Strength: 750 mcg
Quantity: 1 Pre-filled Pen
Form: Injection
Packaging Type: Pre-filled Pen
Manufacturer/Marketed By: Zydus
Country of Origin: India
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Description
Bonmax PTH 750 mcg Injection is a prescription medicine used to treat osteoporosis (weak bones). It contains teriparatide, a recombinant human parathyroid hormone (PTH) analog. Each 3 mL prefilled pen (cartridge) holds 750 micrograms of teriparatide, providing a 28-day supply of daily 20 mcg doses. Bonmax is given by under-the-skin (subcutaneous) injection and helps rebuild bone in patients at high risk for fractures.
Benefits
Bonmax PTH provides several key benefits for patients with osteoporosis:
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Increases bone density: It builds new bone tissue and raises overall bone mineral density.
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Strengthens bone: By stimulating bone-building cells, it makes the skeleton stronger.
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Reduces fracture risk: Clinical studies showed it significantly lowers the risk of spine (vertebral) fractures and other broken bones in patients with osteoporosis.
These effects help improve bone strength and reduce the chances of painful fractures or falls in people with severe osteoporosis.
Indications and Usage
Bonmax PTH (teriparatide) injection is approved for adults with osteoporosis at high risk of fracture. This includes:
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Postmenopausal women with osteoporosis who have already had a bone fracture or cannot use other osteoporosis medicines.
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Men with osteoporosis (primary or hypogonadal) who are at high fracture risk.
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Patients on long-term steroid therapy (for conditions like asthma or arthritis) who develop osteoporosis and are at high risk of fracture.
In all these cases, teriparatide is used when other treatments have failed or are not tolerated. It is not for cosmetic use; it is prescribed to reduce the chance of serious bone fractures in people with weak, brittle bones.
How it Works
Teriparatide in Bonmax mimics the body’s natural parathyroid hormone. Instead of depleting bone (like continuous high PTH does), daily injections favor bone formation. It binds to PTH receptors on bone cells, telling the body to build new bone more than it breaks down old bone. Over time, this leads to thicker, stronger bones. In other words, each daily dose briefly raises PTH activity, which activates bone-building cells (osteoblasts) and increases markers of bone formation. The result is improved bone mass and strength.
Dosage & Administration
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Typical dose: The usual dose is 20 micrograms (mcg) injected once daily by a healthcare provider or patient (as trained). The Bonmax pen delivers exactly this dose each day.
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Injection method: Inject under the skin (subcutaneously) in the front of the thigh or in the belly area. Be sure to follow the provided Instructions for Use.
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When to inject: Take it at the same time every day, as prescribed. If you miss a dose, take it as soon as you remember unless it’s almost time for the next dose. Never double up on doses.
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Duration of therapy: Treatment is usually limited to 2 years in a patient’s lifetime to minimize long-term risks. Discuss treatment length with your doctor.
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Storage: Keep the Bonmax pen refrigerated (2–8°C). Do not freeze it. Once in use, use each pen within 28 days. Store it away from light and out of reach of children.
Always follow your prescribing doctor’s instructions. Your healthcare provider will explain how to use the pen device safely and answer any questions about giving the injection.
Side Effects
Common side effects: Patients often tolerate Bonmax well, but some report mild reactions. The most common effects include:
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Dizziness or feeling lightheaded (especially when standing up).
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Nausea (upset stomach), headache, and joint or muscle aches.
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Redness, pain, or itching at the injection site.
These usually are not severe and often go away as the body adjusts. Drinking enough water and taking the injection at the same time each day can help minimize them.
Serious side effects: Less commonly, Bonmax can cause more serious problems. Contact your doctor right away if you notice:
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High blood calcium levels: Symptoms can include increased thirst, more frequent urination, nausea/vomiting, confusion, or bone pain.
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Kidney stones: Watch for blood in the urine, severe back or side pain, or difficulty passing urine.
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Severe allergic reaction: Signs include hives, swelling of the face or throat, or trouble breathing.
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Sudden low blood pressure: Feeling faint or dizzy when standing up quickly can occur; sit or lie down if this happens.
These serious effects are rare but require immediate medical attention. There is also a very low risk of bone cancer (osteosarcoma) seen in animal studies. For safety, Bonmax is generally limited to 2 years of total use over a patient’s lifetime.
Warning and Precaution
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Bone cancer risk: Bonmax should not be used by patients who have had certain bone disorders or cancer. Do not use if you have Paget’s disease of bone, a history of radiation therapy involving the skeleton, or unexplained high alkaline phosphatase levels. It is also not for children or young adults with open growth plates.
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High calcium levels: Do not use if you already have high blood calcium. Inform your doctor if you have a history of kidney stones, severe kidney disease, or parathyroid disorders.
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Orthostatic hypotension: Bonmax can cause sudden drops in blood pressure. Sit or lie down when you inject the first few doses or if you feel dizzy. Rise slowly from sitting or lying positions to reduce dizziness.
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Allergies: Tell your doctor about any allergies to teriparatide or pen components. A serious allergic reaction to Bonmax is rare but possible.
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Pregnancy and breastfeeding: Bonmax is not recommended for use during pregnancy or nursing.
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Other medications: Be sure your doctor knows all other medicines and supplements you take. Teriparatide may interact with certain drugs (for example, digitalis medicines), so medical supervision is important.
Before starting Bonmax, discuss your full medical history and any concerns with your healthcare provider. They will assess whether the potential benefits outweigh the risks in your situation.
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