http://www.bestdestinationwedding.com/t/41422/customs-in-mexico-an-effort-to-gather-the-info-in-one-thread Check this thread out, or search customs in Mexico in the search bar. Honestly, lots of med shops will be available right in Mexico, so don't stress about it. It's more about monetary limits than items. No go items are generally things that will raise red flags, ie tons of meds, live animals, drugs, firearms,explosives, ect.