My mare gets a shot 1/2 hour before she trailers - I am guessing she doesn’t mind the taste as she doesn’t get fussy about taking the syringe and the liquid. U-guard was recommended by my vet . She won’t eat in the trailer and worries a bit. We use it regardless of how short the trips are (even if they are only 10 mins to a local trail). Cheap insurance to help prevent ulcers we feel is worth it.!