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.
Primary Cardmember is eligible to receive applicable standard checked bag(s) free when they use their miles to book award travel on United-operated flights, as long as they pay for their award ticket taxes and service charges with their qualifying Card and include their MileagePlus account number in their reservation.