A lot of bile coming out of drain after open gallbladder removal surgery. is this normal? how can this be treated? is it serious?

Bile drainage: It really depends on the location of the drain within your body. If it is a t tube then the surgeon would place it within the bile duct and bilious drainage is completely normal. If it is a jp drain talk to a barb suction then sometimes a transient bile leak can be normal. Other times however it can be the sign of an opening or damage to the bile duct. The most important thing is to let your surgeon know.

Leaking?: It depends. If it's a t-tube placed in your bile duct during surgery, that's normal. If it's just a drain placed near the gallbladder bed, you may have a bile leak and should call your surgeon.

Abnormal: Liver leak, or bile duct leak. Several known complications and treatments. See your surgeon now. He left a drain for a reason from what he saw and performed.