ESTROPLAN Injection

Indications

• Irritable bowel syndrome
• Gastrointestinal spasms
• Peptic ulcer disease
• Cholecystitis
• Gastritis

Dosage

Children: Refer to the BNF for Children for appropriate dosing guidance.

Adults: Refer to appropriate clinical guidelines and the BNF for specific dosing information.

Mechanism of action

Clorpostenol exerts its therapeutic effects by antagonizing muscarinic acetylcholine receptors. This inhibition leads to relaxation of smooth muscle in the gastrointestinal tract, thereby reducing spasms and motility. The drug's action is primarily mediated through the blockade of acetylcholine, which is a neurotransmitter involved in stimulating gastrointestinal motility and secretions.

Pharmacodynamics

The pharmacodynamic profile of clorpostenol includes its ability to decrease gastrointestinal motility and secretion by blocking the parasympathetic nervous system's influence on the gastrointestinal tract. This results in reduced symptoms associated with gastrointestinal hyperactivity, such as abdominal pain and cramping. The onset of action can vary depending on the route of administration, but the drug typically provides symptomatic relief within a few hours of dosing.

Pharmacokinetics

Clorpostenol is absorbed from the gastrointestinal tract and undergoes hepatic metabolism. The elimination half-life of the drug is variable, but it is primarily excreted via the kidneys. The pharmacokinetic parameters, such as absorption rates and elimination, may differ based on individual patient factors, including age, hepatic function, and renal function. Due to its anticholinergic properties, the drug can also affect the central nervous system, potentially leading to side effects such as sedation or confusion, particularly in older patients.

Pregnancy

Clorpostenol should only be used during pregnancy if the potential benefit justifies the potential risk to the fetus. Consultation with a healthcare provider is recommended.

Breast-feeding

Clorpostenol may be excreted in breast milk. Caution is advised when administering to breastfeeding women, considering the potential effects on the infant.

Storage

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