If the surgery you are having precludes taking anything by mouth for a significant time, you can make liquid Sinemet which can be sipped as needed or put down a stomach tube (taken off of suction for 30 min). The total daily dose is mixed in a small amount of warm water containing 2 grams of ascorbic acid powder (vitamin C). Then enough water is added to make one liter. It is taken in divided doses during the next 24 hours.