Lots of people ask about hydro and TJ. I Don't know about the border towns and/or TJ but I fly in and outa Mexico City alot and run outa and/or forgot my meds.Mexico isn't like it was 25 years ago, when you could get anything easily. I have not had any luck finding hydro and doctors won't even prescribe it (hydro) because not many pharmacies have it and if you do find one that has it, its very expensive and will be brand US manufactured. You can get oxycodone fairly easily and easy to get a script if you show the doc you have a US script or even empty bottle with script from US for hydrocodone. Just remember don't bring back more than 50 tabs cause they are schedule II, I have declared and customs didn't seem to care. Again, this is from experiences based in Mexico City and Puerto Vallarta. Easy to get T-3's also like in the old days, not OTC, but not tightly controlled either (propina). Good luck.