It is quite normal for your urine to turn yellow a few hours after taking the VITAMIN B-COMPLEX. This is nothing to worry about. The bright yellow colour is caused by a yellow-green pigment that is part of riboflavin (vitamin B2). Yellow urine indicates that your body has absorbed as much riboflavin as possible and is now excreting the excess in the urine.
Is it normal for my urine to turn more yellow? Why can this happen?