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.
General Checked Baggage Rules. 1  Baggage allowance is per passenger, each way. 2  Baggage fees apply for all economy Saver fares. 3  Plus and Advantage fare passengers can enjoy the benefit of having one 20kg bag included in their fare.  Pay online up to two hours before departure at a discount, or pay the full fee at the airport.