The campaign, involving more than 20 countries, resulted in a series of arrests and the seizure of thousands of potentially harmful medical products, according to Interpol.

"The problem of supply of counterfeit and illegal medicines is a global problem and everywhere around the world this is a growing trend," Ruth Mosimann, head of the Control of Illegal Medicines at the Swiss Agency for Therapeutic Products (Swissmedic) told swissinfo.

"In Switzerland, it's mainly a problem because people buy medicines through the internet from other countries," she said.

It's estimated that 50,000 illegal drug shipments are imported by individuals into Switzerland a year.

Mosimann said it was very important to run public campaigns and to warn people not to order such medicines from the internet because it was dangerous for their health.

"With our public campaigns, people know that it's dangerous to buy medicines from the internet, but it is difficult to fight pharmaceutical crime because there are more and more people around the world who want to earn money with counterfeit medicines," Mosimann said.

Counterfeit slimming

During the campaign, Swissmedic succeeded in having a website taken down that operated out of Switzerland and offered prescription potency medication and counterfeit slimming products.

Customers were also misled into believing from the website that there would be no problem with the customs in receiving the products.

The Swiss also contributed during the week with a two-day operation at Geneva airport.

"In Geneva, we focused on shipments from Asia, mainly courier and post packages. Swissmedic and the Federal Customs Authorities checked such parcels and we controlled whether they contained drugs or not. We assessed the contents of these parcels and blocked the illegal shipments," Mosimann explained.

Customs

Out of 261 packages checked, 30 contained medicines. Nine packages were seized by the customs and their recipients will face administrative proceedings for the illegal import of medicines.

A statement from the federal authorities said the goods seized were products that might be dangerous to health such as hormones, psychotropic drugs and prescription-only slimming products.

It noted that based on the results of the two-day operation, it could be estimated that 1,400 illegal courier and post packages containing illegally imported medicines passed through Geneva airport a year.

And it added that since the illegal trade in medicines had reached the global dimensions of organized crime, international cooperation was becoming "increasingly important".

Robert Brookes, swissinfo.ch