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.
Since the onset of baggage screening at airports, many travelers believe that they are not permitted to lock checked bags. Although you can lock your bags, passengers need to be aware of the regulations enforced by the Transportation Security Administration (TSA). Knowing these regulations and procedures can make travel safe and hassle-free.