Baseball-Reference.com lists 49 pitchers with at least four IBB in a game, dating back to approximately 1952. Their teams are 3-45-1 in those games.
Another Giant, Mike McCormick, in the year he became the first to win the National League Cy Young Award after Sandy Koufax retired, apparently holds the record for most intentional walks in a game with six. Two came in the first inning, and two came in the 11th.
Don Drysdale, Ron Perranoski and Larry Sherry each walked four batters intentionally in a game for the Dodgers, all in the 1960s, all in losses, all before Walter Alston basically abandoned the intentional walk.
The last Dodger to walk three batters intentionally in a game was Derek Lowe in 2008. They were his only walks of the game, and Lowe didn’t allow any runs. But the Dodgers lost in 11 innings, 1-0.