The invention provides A composition for increasing milk production in an animal that includes an active compound chosen from calcium isopropyl cresol, calcium isopropyl-o-cresol, lactic acid, or combinations thereof, and calcium carbonate as a buffering agent. The invention also provides a composition for increasing milk production in an animal that includes about 0.1 wt % to about 15 wt % of the total weight of the composition of active compound, wherein the active compound is chosen from calcium isopropyl cresol, calcium isopropyl-o-cresol, and lactic acid, about 40 wt % to about 75 wt % of the total weight of the composition of calcium carbonate, and about 10 wt % to about 60 wt % of the total weight of the composition of at least one carrier. The invention also provides a method for increasing milk production in an animal that includes making a composition having an active compound chosen from calcium isopropyl cresol, calcium isopropyl-o-cresol, lactic acid, or combinations thereof, and calcium carbonate as a buffering agent, and feeding the composition to the animal, wherein consumption of the composition increases milk production in the animal.