I Live In The United States And Was Flying To

i live in the United States and was flying to Switzerland and got food poising after eating on the plan.
I have a spastic stomach, after getting vomiting for hours on the plane, they took me to the clinic at the airport. in less than an hour, after taking Motilium lingual, my stomach relaxed. Can I buy Motilium in the United States?
Thank you,
Carolyn