AviPro*MD*RISPENS RL 1000 DOSES INJECTION

Indications

• Bacterial infections in poultry
• Viral infections in poultry
• Prevention of disease outbreaks in avian species
• Enhancing growth performance in poultry

Dosage

Children: Refer to the specific product guidelines and veterinary recommendations for dosage.

Adults: Refer to the specific product guidelines and veterinary recommendations for dosage.

Mechanism of action

Avipro works by inhibiting bacterial cell wall synthesis and protein synthesis, leading to cell lysis and death in susceptible bacteria. Its active compounds may also exhibit antiviral properties by interfering with viral replication processes.

Pharmacodynamics

The pharmacodynamic profile of Avipro includes a broad spectrum of antimicrobial activity against Gram-positive and Gram-negative bacteria. It may also exhibit immunomodulatory effects, enhancing the immune response of birds against infectious agents. The efficacy of Avipro is influenced by factors such as the type of infection, the susceptibility of the pathogen, and the health status of the birds.

Pharmacokinetics

Avipro is generally administered orally or via drinking water in poultry. It is rapidly absorbed in the gastrointestinal tract, with peak plasma concentrations reached shortly after administration. The distribution of the drug throughout the body is influenced by factors such as species, age, and health status. Metabolism occurs primarily in the liver, with metabolites excreted mainly through the kidneys. The half-life of the drug varies based on the active ingredient and the route of administration.

Pregnancy

Consult a healthcare professional before use, as safety during pregnancy has not been established.

Breast-feeding

Consult a healthcare professional before use, as safety during breastfeeding has not been established.

Storage

Store in a cool, dry place away from direct sunlight. Keep out of reach of children.

Indications

• Schizophrenia
• Bipolar disorder
• Irritability associated with autism

Dosage

Children: Refer to the BNF for Children for appropriate dosage guidelines tailored to pediatric patients.

Adults: Refer to the BNF for specific dosage details based on individual patient needs and conditions.

Mechanism of action

Risperidone exerts its antipsychotic effects by acting as an antagonist at dopamine D2 receptors and serotonin 5-HT2A receptors. This dual action is believed to contribute to its efficacy in managing symptoms of schizophrenia and other mood disorders. By blocking these receptors, risperidone helps to balance neurotransmitter activity, reducing psychotic symptoms and stabilizing mood.

Pharmacodynamics

The pharmacodynamic profile of risperidone includes its efficacy in reducing both positive symptoms (such as hallucinations and delusions) and negative symptoms (such as emotional flatness and social withdrawal) of schizophrenia. The drug also has anxiolytic and mood-stabilizing properties. The onset of action can vary, with improvement in symptoms typically observed within a few weeks of therapy.

Pharmacokinetics

Risperidone is absorbed well after oral administration, with peak plasma concentrations occurring approximately 1 to 2 hours post-dose. It is extensively metabolized in the liver, primarily by cytochrome P450 2D6, to its active metabolite, 9-hydroxyrisperidone. The elimination half-life of risperidone is approximately 20 hours, while that of its metabolite is about 30 hours. Excretion occurs mainly through urine, with a small amount eliminated in feces.

Contra-indications

• Hypersensitivity to risperidone or any of its components
• Severe central nervous system depression
• Comatose states
• Parkinson's disease
• Dementia-related psychosis in elderly patients

Adverse effects

• Extrapyramidal symptoms
• Sedation
• Weight gain
• Metabolic syndrome
• Hyperglycemia
• Hyperlipidemia
• Neuroleptic malignant syndrome
• Tardive dyskinesia
• Agranulocytosis
• Orthostatic hypotension

Interactions

• Caution with other CNS depressants, including alcohol
• May enhance the effects of antihypertensive agents
• Increased risk of serotonin syndrome with SSRIs or other serotonergic drugs
• May interact with drugs that affect CYP2D6 metabolism

Precautions

• Monitor for signs of extrapyramidal symptoms
• Use with caution in patients with cardiovascular disease
• Regularly monitor metabolic parameters such as weight and glucose levels
• Caution in patients with a history of seizures

Pregnancy

Risperidone should only be used in pregnancy if the potential benefit justifies the potential risk to the fetus. Limited data suggests potential risks, including congenital malformations.

Breast-feeding

Risperidone is excreted in breast milk. Caution is advised when administering to nursing mothers as it may affect the infant.

Storage

Store at room temperature, away from moisture and light. Keep out of reach of children.

Formulations

• Tablets
• Oral solution
• Injectable forms (for long-acting administration)