<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by Feebster:
When my brother takes his two boys on long haul flights, they drug them up with antihistamines.</font>
Unless there are legitimate allergies/sinus problems, your brother should be charged with child abuse.
Interact with your kids. Read to them. Bring snacks, games, toys.
Don't drug them.