Berlin's chief executive Amal Naj expects Thailand's pharmaceutical industry will be flooded with generics from both multinational and local companies in the next couple years as several of the top-10 selling drugs lose their patents.

Multinational drug companies are primed to release generics of their competitors, with India the largest supplier.

"Multinational drug companies will no longer claim their products are higher quality than local ones," said Mr Naj.

Local firms will also manufacture generics at lower costs, but medical professionals need to consider the quality of the drugs they prescribe, he added.

Berlin partnered with the Swiss-based pharmaceutical firm AcinoPharma to exclusively market a wide range of products for urological disorders, cancer, and pain treatment in Thailand.

Mr Naj said this pact strengthens Berlin's marketing of innovations and technologies, as well as its competitiveness when Asean Economic Community opens up the region in 2015.

Ruud Van Anraat, chief commercial officer of AcinoPharma, said the partnership will lead to more brand recognition of AcinoPharma in Southeast Asia.