Antihistamines are not sleep medication, and should not be used as a sleep aid by anyone, according to doctors. But they are being given to make children sleepy by parents, babysitters and daycares in the U.S.
In fact, Benadryl should not even be given to children under the age of 2 at all, according to the FDA. From age 2-12, it must be appropriately dosed based on body weight.
People seem to be mistakenly thinking that the medicine is safe because it's not a prescription drug. There have been involuntary manslaughter charges for those responsible for the deaths.