Question 1

What is Lactulose used for?

Accepted Answer

Lactulose is indicated for: constipation, Hepatic encephalopathy, Hepatic lipidosis support.

Question 2

What routes can Lactulose be administered by?

Accepted Answer

Available routes: PO, RECTAL.

Question 3

Which species have cited Lactulose dosing data?

Accepted Answer

Lactulose dosing in the ExoticRx formulary covers 3 species: Cat (Domestic), Dog (Domestic), Rabbit (Domestic).

Question 4

Is Lactulose a controlled substance?

Accepted Answer

Lactulose is not federally scheduled as a controlled substance, but is veterinary prescription only in most jurisdictions.

Question 5

What are the warnings or contraindications for Lactulose?

Accepted Answer

Dose to effect (soft stool). Excessive doses cause diarrhea, flatulence, cramping. Monitor electrolytes with chronic use. Essential in hepatic encephalopathy management.

Question 6

What are the side effects of Lactulose?

Accepted Answer

Dose to effect (soft stool). Excessive doses cause diarrhea, flatulence, cramping. Monitor electrolytes with chronic use. Essential in hepatic encephalopathy management.

Question 7

How does Lactulose work?

Accepted Answer

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.

Species	Route	Dose	Frequency	Evidence	Source
Dog (Domestic)	PO	0.5–1 ml/kg	q8-12h	Strong	Plumb's Veterinary Drug Handbook, 9th Ed
Cat (Domestic)	PO	0.5–1 ml/kg	q8-12h	Strong	Plumb's Veterinary Drug Handbook, 9th Ed

Lactulose

Drug Class

Routes

Indications

Mechanism of Action

Side effects & warnings

Species with Lactulose dosing data (3 dose rules)

Evidence levels across 3 dose rules

Backed by 2 published primary sources

Sample dosing (2 of 3 cited rules)

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