For severe cases, and to help calm pets during the two-week-or-so lag time before the SSRI medications kick in, vets also sometimes prescribe alprazolam (Xanax). “This anti-anxiety medication works very quickly in pets during the SSRI wind-up period,” Aja says. Because it works immediately, it’s also good for fireworks and thunderstorm anxiety. You don’t have to wean the dog on and off the medication.” to you after completing your order online. Deliveries usually