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.
What you have to do will depend on what country you are in, or whether you are traveling internationally. Travel within the United States. If you are on a domestic flight in the US, there is no limit to the amount of cash or monetary instruments that you can carry.However, the TSA may ask a passenger who is carrying a large sum of cash to account for the money. If you have to take cash, keep it in a carry on bag. 2  Never put your cash, financial instruments, or precious metals in a checked bag. 3  Keep your cash and other valuables out of public view.