Actually I was wrong, according to wikipedia it’s illegal to import a prescription drug that is also made in the U.S., even if you have a U.S. prescription:
“It is illegal to purchase controlled substances from an overseas pharmacy. A person purchasing a controlled substance from such a pharmacy may be violating two federal laws that carry stiff penalties. The act of importation of the drug from overseas violates 21 USC, Section 952 (up to 5 years in prison and $250,000 fine for importation of non-narcotic Schedule III, IV, or V drugs; possibly more for narcotics and Schedule I and II drugs). The act of simple possession of a controlled substance without a valid prescription violates 21 USC, Section 844 (up to 1 year in prison and $1,000 fine). FDA does not recognize online prescriptions; for a prescription to be valid there must be a face-to-face relationship between the patient and the health-care professional prescribing the drug. What exactly constitutes a “face-to-face” relationship is considered by many online pharmacies to be a subjective definition that would allow them to operate as an adjunct to the patient’s own physician if the patient submits medical records documenting a condition for which the requested medication is deemed appropriate for treatment. Sections 956 and 1301 provide exemptions for travellers who bring small quantities of controlled substances in or out of the country in person, but not by mail.”
“Importation of any prescription drug (not necessarily a controlled substance) violates 21 USC, Section 301(aa), even for personal use.[12] The Food, Drug, and Cosmetic Act does allow for the importation of drug products for unapproved new drugs for which there is no approved American version. However, this allowance does not allow for the importation of foreign-made versions of U.S. approved drugs.”
I forgot the link, to the section, here it is:
http://en.wikipedia.org/wiki/Online_pharmacy#U.S._consumers
I guess everyone will have to make up their own mind about these things when preparing for a survival situation. We are planning to be prepared for every contingency.