Probably either time released pills or you didn't wait long enough for the pills to hit your bladder.
Your pee wont be yellow for just one shot, it should last at least 3 times before it gets really light colored again.
Dizzy1 Reviewed by Dizzy1 on . B12 Vitamins Ok, so I diluted my sample and took 10 times the dosage of B12 Vitamins, which was 10 pills. ( Supposed to make your piss yellow ). I go to piss in the cup and its as clear as water. I did everything in the dillution guide as well. Anyone know why? Rating: 5