Translation of panacea

I fell asleep but woke up in the middle of the night. My stomach turned upside down and I could not hold myself anymore. I needed to vomit and ran to the bathroom. This occurred three times.
The bus was supposed to leave at around 4 o'clock in the afternoon, so that I still had two to three hours to organize. I went for lunch at some strange place and hardly ate as it was too ugly.
Actually, three hours was enough to get the impression of Macau. It had many narrow streets and some parts reminded us of a Mediterranean village. One can really see the charming Portuguese influence.