Published dose range
Published guidance for dogs: small: 1/8-1/4 tsp; medium: 1/4-1/2 tsp; large: 1/2-1 tsp, in food, every 12-24h.
Source: Veterinary Partner (VIN) →Plain PEG3350 only (no flavored/electrolyte versions). Ensure drinking water.
Skip it or ask a vet first if
suspected obstructiondehydrationstraining with no urine (cats). ER
If you think you overdosed
Call the Pet Poison Helpline: 855-764-7661 or ASPCA Poison Control: 888-426-4435. Both are staffed 24/7 by veterinary toxicologists.