As with any medication or supplement, the use of probiotics is closely tied to the benefits it provides. Probiotics can be used in a number of situations, including: Relieving or helping prevent diarrhea caused by stress (like when your pup is boarded at a kennel), by food allergies and sensitivities, by colitis, or by eating bad food. Helping an older or sick dog’s digestive and immune systems function better. Making it harder for parasites, infections, or bacterial imbalances to thrive in the body, whether as a preventative measure or after an infection has occurred. Helping to increase levels of good bacteria in the gut after long-term antibiotic or steroid use. Daily supplementation to support long-term health. Yes, it should be ok to give your dog probiotics every day after consulting with your veterinarian — most healthy dogs can benefit from them. You may not want to give a severely immunocompromised dog probiotics, as even good bacteria may be too much for their already sensitive system. A vet should be able to tell you if it’s safe for your dog to take probiotics based on their current health.