Dog · Canis lupus familiaris · typical adult weight 2.00–80.00 kg
Lactulose is dosed at 0.5–1 ml/kg PO q8-12h in dogs, per BSAVA Small Animal Formulary, 10th Ed, Part A — Canine and Feline: Lactulose, printed p.222 (corpus PDF p.238). Lactulose is used in dogs for Hepatic encephalopathy, constipation. Routes documented in dogs: PO. A typical adult dog weighs 2.00–80.00 kg. ExoticRx lists 1 cited dose rule for Lactulose in dogs, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Kristalose, Cephulac
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 0.5–1 ml/kg | q8-12h | Titrate to soft stool | Hepatic encephalopathy, constipation | Strong | BSAVA Small Animal Formulary, 10th Ed, Part A — Canine and Feline: Lactulose, printed p.222 (corpus PDF p.238) |
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These ranges are per kg. Enter your dog's weight to get the precise dose and draw-up volume — unit and concentration math done for you.
Synthetic disaccharide broken down by colonic bacteria to lactic, acetic, and formic acids. Osmotic effect draws water into colon. Acidifies colonic contents, converting ammonia to non-absorbable ammonium.
Dose to effect (soft stool). Excessive doses cause diarrhea, flatulence, cramping. Monitor electrolytes with chronic use. Essential in hepatic encephalopathy management.
Species-specific contraindications and adverse-reaction reports for dogs may differ from canine / feline reference data — consult the primary citations listed with each rule.
Lactulose dose range in dogs, with cited source references: PO 0.5–1 ml/kg q8-12h. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Lactulose in dogs: PO.
Cited course lengths for Lactulose in dogs include: Titrate to soft stool. Duration depends on the indication — match it to the specific dose rule in the table above.
Lactulose is indicated in dogs for: Hepatic encephalopathy, constipation.
These are general warnings for Lactulose across species; consult the dog dosing table above for species-specific guidance. Dose to effect (soft stool). Excessive doses cause diarrhea, flatulence, cramping. Monitor electrolytes with chronic use. Essential in hepatic encephalopathy management.
Why a species-specific page? Lactulose pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in dogs — the rules above are the citations specific to this species, not generic recommendations.
Sourced from published veterinary references; awaiting credentialed clinical reviewer. See our editorial process. Reference only — not veterinary advice.