In what turned out to be a goal fest, Coldstream opened the scoring with an early strike from hat-trick hero Darren Simpson.
The Streamers went on to rule the remainder of the first half, during which they netted a further three times.
United could well have folded, but following the interval they began to claw their way into the game when Kevin Strathdee hit home a pass from Ross Scott.
Minutes later, David Strathdee got his name on the United scoresheet by beating the home keeper with a free kick.
Coldstream then made it a nap hand, but the Teries were undaunted and after Ross Wallace had done the spadework, Kevin Strathdee scored again.
Joe Wallace pulled another goal back and United pushed for an equaliser. But it was the hosts who did the scoring by snatching a sixth. Other home scorers were Scott Turnbull (2) and Steven Waugh.