Not compulsorily. Depending on the online drugstore in question, modafinil may be obtained without a prescription. In the United States, Australia, Sweden, among other countries, modafinil is considered a Schedule IV controlled substance. As a result, a prescription is required when purchasing it from a local pharmacy, and it may only be refilled 5 times within a 6-month period. Even in these countries, the medicine may be ordered online without an Rx. In Vietnam you can easily buy Modafinil without an Rx.