Buy Hydrocodone From Mexico Without a Prescription
Technically, it is not lawful for individuals to import medications, even for personal use, into the United States (and even if you obtained them with a valid prescription). This includes buying medications in Mexico and bringing them back to the United States. However, in many situations, "personal use" importation is overlooked, although it is still illegal.
U.S. Customs is unlikely to overlook importation of controlled substances such as hydrocodone. You are less likely to have problems if you have a legitimate prescription from a legitimate United States healthcare provider, a copy of the prescription from the Mexican healthcare provider, and documentation of a legitimate medical need for hydrocodone. Also, you likely will be allowed to import only small quantities of hydrocodone, if any. This action is technically illegal, and you do not have a "right" to bring hydrocodone into the United States with you. U.S. Customs can prevent you from bringing any medication back for any reason.
This issue is quite clear. It is illegal to ship medications (of any kind) from Mexico to the United States. Most Mexican "pharmacies" that are willing to fill mail-order or Internet orders for hydrocodone are not legitimate. This is because a valid prescription from a legitimate medical provider in Mexico is necessary, and it is illegal to ship medications to the United States. Buying hydrocodone from a Mexican mail-order or Internet pharmacy is no more safe or legitimate than doing so from a mail-order or Internet pharmacy anywhere else in the world (including the United States). You simply cannot expect a business that completely disregards laws and regulations to be careful about dispensing medications. Medications from such business may be counterfeit, expired, contaminated, stored improperly, or may not even be the right medication or strength.