Lactulose drug classification?

Lactulose classifications:

- Pharmacologic (drug) class: Osmotic laxative (non-absorbable sugar).
- Therapeutic class: Laxative; used for constipation and, importantly, for hepatic encephalopathy.
- Chemical class: Synthetic disaccharide (galactose–fructose), derived from lactose.
- Mechanism: Not absorbed in the small intestine; in the colon, it is fermented by bacteria to short-chain fatty acids, which draws water into the lumen (osmotic effect) and lowers the colonic pH. The acidity helps convert ammonia (NH3) to ammonium (NH4+), reducing ammonia absorption in hepatic encephalopathy.
- Additional notes: It is a fermentable carbohydrate with prebiotic-like effects; not a probiotic.

If you want, I can tailor this to a specific context (e.g., exam, clinical guidelines, or formulary).