"A lot of tourists coming from Asian countries buy it, and also make repeat purchases," Tam said.
She welcomed Thailand's prime minister bringing it up at the summit, as they export some of their product to the country.
"He's a smart guy, he knows how popular it is. We know from our Thai distributor that the Thai people love it."
But Tam says it's a very New Zealand item.
"We get our sheep placenta extract locally from Christchurch. This ingredient has been used for a long time."
"I also know that a few New Zealand brands make sheep placenta capsules."
O'Connor said he backs it as a way to diversify agriculture products.
"It's a market opportunity, and it's one more opportunity for the sheep industry."