Dr Pert said there was overwhelming evidence that price has been a very important factor in encouraging people to quit.
"You need the stick of the price and the carrot of smoking cessation programmes."Dr Pert said while he wasn't aware of all the details around funding to extra support for the free doctors' visits and prescriptions for under 13s announced in Budget 2014, it was a responsible move.
He said GPs would only be able to continue to provide a high quality free service for the group as long as the funding received maintained its value.
"It means it is much more likely that we can continue to offer that."