All multivitamins make you piss neon yellow all day (from what Ive experienced anyway) until you've got a good amount of water through you, then it stops being neon yellow lol
I used to take GNC Mega Men, then switched to the one that was 2$ more (forgot the name) and now I take Centrum Forte. I never really noticed a difference between the 3 besides the shading of neon yellow in my piss, and how long it was take for my iss to go back to normal. The only difference I really did see outside of that was when I first started on Centrum, I wasnt eating properly that week and the day after I took the first multivitamin my appetite grew.. then again that could have been because of what I ate that day as well..