Hi - you have a couple of options here. When we travel, I sometimes ask my doctor to write the 'script for six months rather than three. The downside is that sometimes means only the first three months are covered by health insurance, and I pay the regular price for the other three. The other option, in many countries you don't need a prescription for most drugs, unlesss they are opiate-based or other psycotropic drugs. What I do is look for a website for a major pharmacy in my target country. For example, in Mexico "Farmacias del Ahorro" is a major chain. Their website https://www.fahorro.com has a search field at the top. Search for your medication(s) there to see if it is available and whaat it costs. I searched for "metformin" for diabetes, and found 60 500mg tablets for 167MXN, or about $8.20 USD. One last tip - if you don't find the brand name, try the generic name.