Officers say they have also caught a number of adults suspected of making regular proxy purchases for children and have reported them to the Procurator Fiscal.
The suspected proxy purchasers were nabbed after an intelligence-gathering campaign by the Tayside Police Community Impact Team. Police are liaising with retailers to raise awareness of the issue of proxy purchasing.
Sergeant June Robertson said: “Officers will continue to tackle the problem of under-age drinking as long as it remains.
“We know the amount of alcohol we seize or prevent from going into the wrong hands has a knock-on effect in reducing vandalism, assaults and youths causing annoyance calls.”