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.
In addition, the first checked bag fee is waived for flights starting or ending in Guadalajara or Mexico City. Active duty U.S. military and their dependents can check up to 5 bags (up to 70 lbs each) for free.redit cards: Both American and US Airways offer credit cards that give you a free checked baggage allowance: 1  US Airways World MasterCard: first bag free for cardholders plus up to 4 companions on domestic US Airways-operated flights.