“This product is a lifesaver for our dog. We might not have tried it through our vet due to the price difference- much more expensive via the vet office. Biggs is a shelter dog and has extreme anxiety during storms, doorbell, big trucks, etc. We've tried the thunder shirt and another script which was basically a tranquilizer drug. This pill raises his seratonin levels and he is calm and cheerful, but not sleepy and zoned. Appreciate Allivet's service - they took care of contacting my vet to fill the script and for the refill. We were sent two refills within a few days of one another- I've written them today to see why. That's been the only glitch in ordering and the only reason for four stars instead of five.”