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.
Free Check-in Baggage for International Flight. Free Check-in Baggage / Luggage Allowance. For international passengers , The luggage allowance is the maximum number, size and weight of bags that each customer is allowed. Most economy class passengers are permitted to Check-in up to 20kgs./44 lbs. of baggage.