Published dose range
Published guidance for dogs: under 10 lb: 1 mg; 10-25 lb: 1.5 mg; 26-100 lb: 3 mg; over 100 lb: 3-6 mg, every 8-12h as needed.
Source: Veterinary Partner (VIN) →XYLITOL WARNING: many gummy/fast-melt melatonin products contain xylitol, which is toxic to dogs. Plain tablets only. Check the label every time.
Skip it or ask a vet first if
xylitol-containing productspregnancywith sedatives
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.