A process for producing lactose particles comprises combining a predetermined quantity of lactose seed particles to a first aqueous solution comprising a plurality of lactose particles to form a second solution, wherein the predetermined quantity of lactose seed particles is present in a well dispersed suspension and the first aqueous solution is saturated with said plurality of lactose particles; and subjecting the second solution to conditions sufficient to induce crystallization of the lactose seed particles to form a second plurality of lactose particles having a median particle size of about 25 microns to about 100 microns.