Somatotropin
Also known as: Posilac, Humatrope, Nutropin, Genotropin, Norditropin
Somatotropin is given by injection under the skin. * **Consistency is key:** Administer the medication exactly as directed by your veterinarian to maintain steady hormone levels. * **Monitor for increased thirst or urination:** This drug can increase blood sugar levels and potentially lead to diabetes. Contact your vet if you notice your pet drinking or urinating more than usual. * **Storage:** Keep the medication refrigerated. **Do not shake the vial vigorously**, as this can damage the fragile hormone proteins. Gently roll the vial to mix if instructed.
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
- Growth hormone replacement
- Growth hormone replacement
How it is given
Possible side effects
- Hyperglycemia
- Insulin resistance / Diabetes mellitus
- Acromegaly (with prolonged use)
- Antibody formation (when using human GH in pets)
- Injection site reactions
- Diabetogenic effect (hyperglycemia/diabetes mellitus)
- Local injection site reactions
- Antibody formation (reducing long-term efficacy)
Cautions & contraindications
- Closed epiphyseal plates (if seeking linear growth)
- Neoplasia (may stimulate tumor growth)
- Diabetes mellitus
- Hypersensitivity to the drug or formulation components
- Patients with closed epiphyses (unless treating specific adult-onset deficiencies)
- Known hypersensitivity
- Active neoplasia
- > **Important:** Monitor blood glucose closely, as somatotropin is highly diabetogenic. Use with extreme caution in patients with a history of pancreatitis or those at risk for diabetes mellitus. In small animals, monitor for signs of **acromegaly** (broadening of facial features, increased interdental spaces, organomegaly) during prolonged therapy. GH therapy can also unmask underlying hypothyroidism.
Drug interactions
- Glucocorticoids: May antagonize the growth-promoting effects of somatotropin.
- Insulin: Somatotropin induces insulin resistance, potentially requiring significant adjustments in insulin dosage for diabetic patients.
Frequently asked questions
What is Somatotropin used for in pets?
Somatotropin is given by injection under the skin. * **Consistency is key:** Administer the medication exactly as directed by your veterinarian to maintain steady hormone levels. * **Monitor for increased thirst or urination:** This drug can increase blood sugar levels and potentially lead to diabetes. Contact your vet if you notice your pet drinking or urinating more than usual. * **Storage:** Keep the medication refrigerated. **Do not shake the vial vigorously**, as this can damage the fragile hormone proteins. Gently roll the vial to mix if instructed.
Is Somatotropin 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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