Mailing medication

A family member is mailing me some medication from Arizona to lakeside via FedEx. The medication has been held up in customs because it needs a health certificate. My question is does anybody know what a health certificate is? Where I would get one?

If you are in the Chapala area, check with IShop mail service in SAT, as they can get clearance for certain medications from out of the country. OTT...it get's complicated with government bureaucracies. Easier to use/find the Mexican equivalent or have it muled in by car.

Thanks for the reply. I'll check them out.