After returning home, international students can bring Pfizer's specific drugs. According to relevant public information, passengers' personal belongings are limited to a reasonable number for their own use. Those exceeding the reasonable amount for personal use shall not be released by the customs, and the drugs for personal use shall be limited to a small amount, and the reasonable amount for personal use shall be subject to customs supervision. However, people should not buy Pfizer's specific drugs in the United States. Paxlovi sold online at present is fake, so don't be fooled.