200 mg/dL is the same as 0.20 BAC.
The human body can clear about 1 drink (12 ounces beer, 1.25 ounces 80 proof liquor, or 5 ounces table wine) in an hour. The amount is somewhat varied according to age, weight, metabolism, sex, etc. In the US the usual legal limit is 0.08 BAC which is equivalent to 80 mg/dL. Thus your 200 mg/dL is 0.20 BAC. A BAC of 0.20 is equivalent to about 8 drinks for a 180-lb man. At 0.20 BAC someone usually has delayed reaction time, loss of motor control, slurred speech and staggering. Between 0.21 and 0.29 people can black out. At 0.30 to 0.39 breathing and heart rate are severely affected and a person can die.