In helping a good friend I discovered that another med in this general area is available and prescribed here. It is Alprazolam or Xanax. It is supposed to be for anxiety problems but often prescribed for sleeping problems in hospitals here.So the med you need might be available but for a different "problem".
I have the full announcement in English and Chinese if desired.
"CBP strongly encourages all People’s Republic of China passport holders with 10-year visas to enroll now at www.EVUS.gov. For more information about the EVUS program, visit www.cbp.gov/EVUS."
To all my Chinese friends traveling to the USA. You have to do this to enter the USA.
Beginning November 29, 2016, the U.S. Department of Homeland Security, U.S. Customs and Border Protection (CBP) will require People’s Republic of China Passport holders who have 10-year tourist and business visas to input their information (name, birth date, employment, etc.) in an online platform before traveling to the United States.
This online platform is called the Electronic Visa Update System (EVUS). Enrollment in this system, called EVUS, will become mandatory for these travelers beginning November 29, 2016. www.EVUS.gov All Chinese nationals holding a 10-year B1/B2, B1 and B2 visa in a passport issued by the People’s Republic of China who plan to travel to the United States on or after November 29 must have a valid EVUS enrollment. Those traveling by air will not be permitted to board their flight without a successful EVUS enrollment. If arriving at a land or sea port of entry, the traveler will be required to have a valid EVUS enrollment before being admitted to the United States.