Published dose range
Published guidance for dogs: 1-2 drops per nostril, every 8-12h.
Source: Veterinary Partner (VIN) →Plain saline only, no medicated sprays (oxymetazoline is toxic).
Skip it or ask a vet first if
medicated nasal sprays (Afrin etc.)
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.