I have found that many medications which require a prescription in the U.S. are available over the counter in Thailand. I recall specifically that last year when I had a tooth infection, my dentist at home told me to go to a local dentist and get a prescription for a particular antibiotic in a particular strength. She offered to speak with the local dentist on the phone if necessary. I went to a pharmacy first and got what I needed. And at an incredibly small fraction of the U.S. cost, too!!