“Re-heating” or “re-warming” milk will not destroy the lactase as long as it has had 24 hours to neutralize the lactose. We recommend adding the lactase drops to the milk and refrigerating. That way it will have time to neutralize the lactose in the milk.†
†These statements have not been evaluated by the Food and Drug Administration (FDA). This product is not intended to diagnose, treat, cure, or prevent any disease.