Selling drugs online, especially prescription or controlled substances, is heavily regulated and generally illegal without proper authorization. In countries like those in the EU and Australia, the sale of medicinal products online is restricted to authorized pharmacies or commercial establishments that have obtained specific licenses and follow strict regulatory frameworks. Unauthorized online drug selling is illegal and subject to severe penalties including fines and imprisonment. Key legal points include:

• Only licensed pharmacies or authorized sellers can legally sell drugs online.
• Prior authorization and specific website requirements must be fulfilled.
• The sale of prescription or controlled drugs online without valid licenses is prohibited.
• Use of intermediary platforms to sell drugs is often banned to protect consumer choice and safety.
• Unauthorized sale of drugs online is unlawful and can lead to criminal charges.

In summary, legally selling drugs online involves being a licensed pharmacy or authorized entity complying with national regulations, obtaining necessary approvals, and following strict operational and advertising rules. Illegal drug selling online is a criminal offense with serious consequences.

Note: The phrase "how to sell drugs online" is also the title of a popular German TV series about fictional drug dealing, but this is entertainment and unrelated to legal or safe drug sales.