benadryl: under 6 no, 6-12 1, 12+ 1-2 every 4-6 hours no more the 6 in 24
imodium: <12 1 tab then 1/2 if still loose. >12 2 then 1 no more than 4 in 24.
Acetaminophen 500mg: <12 no; >12 2 every 6 hours. no more than 6 in 24.
ibuprofen: <12 no; >12 1-2 tab every 4-6; 
Asprin: chew one if signs of heart attack.