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.
As mentioned, travelers with United may bring one carry-on bag plus one personal item on board free of charge. When it comes to checked baggage, the fee is per person/ticket â so, if they will travel with one checked bag each, the cost will be $25 each. Booking checked baggage in advance will allow you to check the exact costs per bag.