The US drug buying system is being held up as the culprit for driving up the price of pharmaceuticals in America - not foreign agencies.
Donald Trump is blaming foreign countries' centralised drug buying agencies, like Pharmac, for ripping off US companies by negotiating a good price.
Otago University's Professor Les Toop told Mike Hosking the problem lies within America's own system.
The head of the University's Department of General Practice says prices are driven by what the market will pay.
"Examples like the EpiPen and things that people who have life threatening anaphylaxis, the price of that medicine [...] has gone up sixfold in the US in the last 10 years because they don't have a mechanism to control the price."
LISTEN ABOVE AS LES TOOP SPEAKS WITH MIKE HOSKING