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.
For all other international flights. You may check up to two bags that meet our size & weight restrictions at no extra charge when traveling within regions not listed above. NOTE: Weight restrictions at no extra charge vary by cabin. Main Cabin passengers should follow the standard 50 lb limit per piece.