CBD oil typically begins to work in dogs within 30 to 60 minutes when administered orally, although this can vary depending on several factors such as the dog’s size, age, overall health, and individual metabolism. Smaller dogs or those with faster metabolisms may respond more quickly, while larger or older dogs may take longer. The form of CBD also influences onset time—tinctures absorbed under the tongue (sublingually) can act faster than treats or capsules, which must first be digested.

For acute issues like anxiety or situational stress (e.g., thunderstorms or car rides), pet owners might see noticeable calming effects within an hour. However, for chronic conditions such as arthritis, inflammation, or epilepsy, CBD may require several days or even weeks of consistent use before significant improvement is seen. Factors such as the quality of the CBD oil, whether it’s full-spectrum or isolate, and its concentration also impact how effectively and quickly it works.

Additionally, it's essential to use products specifically formulated for pets and consult with a veterinarian to determine an appropriate dosage and rule out any potential interactions with other medications. Overall, patience and close observation are key to understanding how your individual dog responds to CBD treatment