"This is why one of the submissions of the Alcohol Law Reform Bill recommended the Government raise the tax on alcohol.
"Beer is one product that is less affected by price increase, and has more of what economists call price elasticity than wine or spirits.
"Typically a 3 per cent rise in beer prices would only result in about a 1 per cent drop in consumption. The alcohol companies are very careful not to upset their cash flow, they especially want to keep New Zealand's 700,000 heavy drinkers happy."
But Mr Caldwell did not think a 3 per cent price increase would have any serious effect on sales.
"Nor will it help to stem our huge and growing Kiwi alcohol dependency problem."
Mount Maunganui GP Tony Farrell said an increase in the price of beer could possibly reduce consumption but would not in itself have a significant impact on alcohol-related problems.
"If prices are raised as well as reducing availability and reducing advertising, if you do them together you could get a real impact."
Hospitality Association chief Bruce Robertson said members would be advised to pass on the increases to patrons as soon as possible.
"Businesses are currently struggling in terms of profitability, we're seeing ongoing closures.
"And while it's challenging for them to pass it on, while they don't they're putting their businesses in jeopardy ... and putting at risk the jobs of their staff."
DB managing director Brian Blake said higher raw material prices and the increased cost of packaging and distribution led to the "unavoidable" price rise.
"We've tried to limit the price increase to a lowest possible increase that we can put through ... the simple fact is that we can't carry on incurring those costs."