GHB (gamma-hydroxybutyrate) is produced naturally in the human body in very small amounts. When taken as a recreational drug, and especially when taken in combination with alcohol or other drugs, GHB can be extremely dangerous. GHB is a central nervous system depressant.
International flights always allow carry-on luggage, but each airline has its own restrictions as to quantity, size and weight. Some international carry-on policies restrict bag weights to 11 lbs. or less, while domestic flights rarely have a weight limit.
Wheelchairs/scooters, braces or other assistive devices are accepted free of charge as checked baggage and are in addition to the normal checked baggage allowance. There are special handling procedures for motorized equipment. Please contact an American Airlines representative.