Can I Give My Dog MiraLAX?

Yes, with care
Polyethylene glycol 3350 is commonly referenced for dogs at published doses. 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. Plain PEG3350 only (no flavored/electrolyte versions). Ensure drinking water.
Source: Veterinary Partner (VIN)
Get the exact range for your dog's weight

Skip it or ask a vet first if

suspected obstructiondehydrationstraining with no urine (cats). ER

The safe habit

Confirm any medication decision with your veterinarian, who knows your dog's health history and other medications. VetDose shows published reference data, not prescriptions.