Kara drinks 4 * 3 = <<4*3=12>>12 ounces of water with her medication each day.
In a week, she drinks 12 * 7 = <<12*7=84>>84 ounces of water with her medication.
In two weeks, she drinks 84 * 2 = <<84*2=168>>168 ounces of water with her medication.
One day, she forgot two tablets, so she did not drink 2 * 4 = <<2*4=8>>8 ounces of water.
Thus, Kara drank 168 - 8 = <<168-8=160>>160 ounces of water with her medication over two weeks.
#### 160