Calming & Anxiety Supplements

Stress and anxiety support for dogs that struggle with thunderstorms, separation, or travel.

Reviews

NaturVet Quiet Moments Calming Soft Chews

A multi-ingredient fast-acting calming chew for situational anxiety — thunderstorms, fireworks, vet visits, car rides. Give 30 minutes before the stressor. The practical complement to daily calming supplements that don't work in the moment.

Best Overall

Purina Pro Plan Calming Care Canine

4.4

A probiotic-based calming supplement that works through the gut-brain axis rather than sedation or herbal compounds. Slower to take effect than fast-acting options, but the mechanism is scientifically distinct — and backed by Purina's research on the BL999 strain.

Best Of Guides

Best Calming Supplements for Dogs (2026): Tested and Ranked

We evaluated the top anxiety and calming supplements for dogs by mechanism, clinical evidence, onset time, and real-world results. Here's what actually reduces anxious behavior — and when to use each.

See our picks