Overview of AD
| Property | Description |
|---|---|
| Active Ingredient | Racecadotril (INN) |
| Form | Oral Capsules, Granules/Powder for Suspension |
| Pharmacological Class | Intestinal Antisecretory Agent (NEP Inhibitor) |
| General Purpose | Symptomatic relief of acute watery output |
| Origin | Synthetic Prodrug |
AD is a synthetic antidiarrheal medication whose active substance is Racecadotril (INN), a compound clinically recognized for its targeted action against excessive fluid loss in the gut. The medicine is functionally a prodrug, meaning the administered compound is inactive until it is rapidly metabolized into its active therapeutic form, thiorphan, within the body. It is categorized pharmacologically as an Intestinal Antisecretory Agent, distinguishing it from other treatments by directly modulating the flow of fluids within the gut rather than merely slowing down bowel movements.
What Type of Medicine is AD (Racecadotril)?
The medicine AD is classified as a Neutral Endopeptidase (NEP) inhibitor, placing it in the specialized group of antisecretory agents. This mechanism is unique among common antidiarrheals because it addresses the core issue of water and electrolyte hypersecretion into the bowel lumen. This action is a key differentiating factor, enabling symptomatic relief without affecting the central nervous system. The medication achieves its effect through a peripheral action, meaning its therapeutic effects are localized strictly to the gastrointestinal tract.
Available Forms and Composition (Capsules and Powder)
AD is a single-component product formulated exclusively for oral administration, and it is available in several forms to suit different patient groups, including capsules (typically for adults) and granules or oral powder formulations (suitable for suspension, often used for children). Regardless of whether it is taken as a solid capsule or a powder suspended in liquid, the sole active ingredient remains Racecadotril. These dosage forms utilize various pharmaceutical excipients and fillers appropriate for oral delivery, ensuring that the synthetic compound reaches the digestive tract effectively.
Regulatory References

