Hairball Aid is for use in cats over the age of 12 weeks. Helps eliminate and prevent hairballs when used on a daily basis. Also helps to support the digestive system. Great for multi-cat households. Warnings: For animal use only. Keep out of the reach of children and animals. In case of accidental overdose, contact a health professional immediately. Due to the tasty nature of our products, do not leave package unattended around pets. Cautions: Safe use in pregnant animals or animals intended for breeding has not been proven. Absorption of drugs taken simultaneously may be delayed. If animal’s condition worsens or does not improve, stop product administration and consult your veterinarian.