"It is a challenge, there's no doubt about it," he said. "But it's also inevitable that we will have to work with other companies ... We work with over 55 countries externally to discover new medicines."
Howman said sport at all levels — professional or amateur — has the potential to interest illegal markets.
"The increasing engagement of the criminal underworld in providing banned substances, the incentive to engage in trafficking remains very high," Howman said. "The substances they attain are raw materials delivered from the east and put together in kitchen laboratories, unregulated and unsanitized ... that should be of a major concern to all governmental authorities."
Drug trafficking in the underworld is linked to the same criminals involved in "money laundering, corruption, betting and fraud," Howman said.