Description
Classification
Genotropin contains somatropin, recombinant human growth hormone. It is a prescription-only medicine manufactured by Pfizer and is used for specific growth hormone deficiency and growth-related disorders.
The advertised 36IU corresponds approximately to 12mg of somatropin, since 1mg of somatropin is approximately 3 IU. The exact presentation should nevertheless be confirmed from the packaging.
What is Pfizer Genotropin 36IU?
Genotropin is a recombinant form of human growth hormone (somatropin). Pfizer’s UK-authorised Genotropin presentations include 12mg and 5.3mg powder-and-solvent formulations, as well as smaller MiniQuick presentations.
Genotropin is administered by subcutaneous injection and should be prescribed and monitored by an appropriately qualified clinician.
Important product details include:
- Active ingredient: somatropin
- Advertised strength: 36IU / approximately 12mg
- Manufacturer: Pfizer
- Pharmaceutical form and presentation
- Batch or lot number
- Expiry date
- Storage requirements
- Regulatory status
Dosage
Somatropin dosing is individualised according to the indication, body weight or body-surface area, age, clinical response and laboratory monitoring.
For adults with confirmed growth hormone deficiency, treatment is normally initiated at a low dose and adjusted according to response and tolerability. Paediatric dosing varies according to the underlying growth disorder.
A 36IU total amount is not a recommended individual dose and should not be divided or administered according to a generic schedule without medical supervision.
How Does Pfizer Genotropin 36IU Work?
Somatropin is a recombinant form of human growth hormone. It acts through growth-hormone receptors and stimulates production of insulin-like growth factor 1 (IGF-1).
The growth-hormone/IGF-1 system contributes to:
- Linear growth in children
- Bone and cartilage development
- Protein synthesis
- Muscle and tissue growth
- Regulation of body composition and metabolism
Benefits
When prescribed for an appropriate medical indication, Genotropin may:
- Promote growth in children with documented growth hormone deficiency
- Support growth in certain recognised paediatric growth disorders
- Replace deficient growth hormone in adults
- Help maintain normal body composition and bone mass in adults with genuine growth hormone deficiency
Genotropin is not indicated simply for general fitness, bodybuilding or cosmetic purposes.
When Should You Not Take Pfizer Genotropin 36IU?
Genotropin should not be used in certain circumstances, including:
- Active or suspected tumour growth
- Known hypersensitivity to somatropin or formulation ingredients
- Growth promotion in children with closed growth plates
- Certain acute critical illnesses following major surgery, trauma or respiratory failure
Particular caution is required with:
- Diabetes or impaired glucose tolerance
- Intracranial tumours
- Thyroid disorders
- Severe obesity or sleep apnoea
- Increased intracranial pressure
- Certain genetic syndromes
- Conditions associated with scoliosis progression
What is the Mechanism of Pfizer Genotropin 36IU?
Somatropin binds to growth-hormone receptors and activates signalling pathways that increase production of IGF-1, particularly in the liver and other tissues.
IGF-1 mediates many of the growth-promoting effects of growth hormone, while somatropin itself also influences protein, carbohydrate and fat metabolism.
Uses of Pfizer Genotropin 36IU
According to UK prescribing information, Genotropin may be used for selected conditions including:
- Paediatric growth hormone deficiency
- Growth disturbance associated with Turner syndrome
- Growth disturbance associated with chronic renal insufficiency
- Certain children born small for gestational age who fail to achieve catch-up growth
- Prader-Willi syndrome in appropriately diagnosed children
- Growth hormone replacement in adults with pronounced growth hormone deficiency
The precise indication must be established by a specialist.
Warnings and Precautions
Important precautions include:
- Genotropin should be initiated and monitored by an appropriately qualified physician.
- Blood glucose may require monitoring, particularly in people at risk of diabetes.
- Thyroid function may require monitoring.
- Growth and bone development should be monitored in children.
- Report persistent severe headaches, visual disturbances, nausea or vomiting.
- Injection sites should be rotated to reduce the risk of lipoatrophy.
- Do not use a product if its authenticity, storage history or integrity is uncertain.
Side Effects
Possible adverse effects include:
- Headache
- Muscle or joint pain
- Swelling caused by fluid retention
- Injection-site reactions
- Numbness or tingling
- Stiffness
Growth hormone can also affect glucose metabolism and, rarely, may be associated with increased intracranial pressure or other significant complications.
Seek medical attention for severe headaches accompanied by visual changes, significant swelling, breathing problems or serious allergic reactions.
Storage
Genotropin is a temperature-sensitive injectable biological medicine. Storage requirements depend on the specific presentation.
The product should be kept according to the manufacturer’s stated refrigerated conditions and protected from inappropriate temperatures. The reconstituted solution also has specific storage requirements.
Do not use Genotropin if it has been improperly stored, frozen when it should not have been, or appears abnormal after reconstitution. The manufacturer’s instructions should always take precedence.
Where to buy Pfizer Genotropin 36IU?
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Frequently Asked Questions
1. What is Pfizer Genotropin 36IU?
It refers to Genotropin containing somatropin (recombinant human growth hormone). 36IU corresponds approximately to 12mg of somatropin, although the exact product presentation should be checked.
2. What is Genotropin used for?
It is used for medically diagnosed growth hormone deficiency and certain recognised growth disorders, including selected paediatric conditions and adult growth hormone replacement.
3. Is Genotropin a prescription medicine?
Yes. UK-authorised Genotropin products are prescription-only medicines.
4. Is 36IU a standard Genotropin UK presentation?
UK product information lists Genotropin presentations in mg, including a 12mg powder-and-solvent formulation. Therefore, a product advertised as “36IU” should have its exact presentation and authenticity verified.
5. Can Genotropin be used for bodybuilding?
Genotropin is intended for specific medical indications, not general bodybuilding or cosmetic use. Its use outside an approved medical indication carries unnecessary risks and should not be undertaken without specialist medical supervision.
