A leading obesity doctor is throwing his full support behind a New Zealand grown alternative to weight loss drug Ozempic

As doctors grapple with a global shortage of the injectable, interest in the natural product Calocurb is climbing.

Its active ingredient Amarasate is extracted from hops grown at the top of the South Island.

Obesity doctor Ben Gonzalez says those in the industry have seen success from it over the past seven to ten years.