The user eats the target's held berry and, if applicable, receives its benefits. Jaboca Berry will be removed without damaging the user, but Tanga Berry will still activate and reduce this move's power. The target can still recover its held berry by using Recycle.
Speed is doubled for every Pokemon on the user's team for three turns; the turn used to perform Tailwind is included in this total, as are any turns used to switch around Pokemon.