Promotional material said it contained no tar, carbon monoxide, or "any of the other deadly substances found in tobacco cigarettes".
But Mr Bradbrook said, "It's misappropriating our reo to pitch a product which has still got a strong link towards smoking cigarettes which are killing our people."
When contacted by the Herald, company director Mat Docherty initially said the product would not be withdrawn, nor the name changed. However, an hour later he said he had taken legal advice and there would be a name change within the month.
"We're not targeting Maori ... or exploiting Maori ... Our goal was to give it a brand name that New Zealanders, both Maori and Pakeha, could identify with. We thought Mana could be a good name for it. Looking at it from that angle, we probably could have picked a better name."
Mr Bradbrook said he appreciated the quick reversal.
"It's good when people recognise they've made a mistake."