Batteries not included. Some differentials may pose a choking hazard to children under the age of five. If you are pregnant, or think you may become pregnant, talk with your doctor to see if MA181 is right for you. Fainting, irritability, anger, bewilderment, and other symptoms may become apparent. If symptoms last more than 7 days, discontinue use of MA181 and consult a physician. Remember, do not let anyone to whom MA181 is not prescribed participate in MA181. Abuse and addiction may occur.