When i take the tablet prenatal vitamin my urine turns yellow, but when i take the softgel prenatal vitamin my urine is normal. why which is better?

Byproduct "dump": Your kidneys are filtering out the by products of the tablet and "dumping" them into your urine. The only other variable is if you are diluting the urine by drinking more fluids with one tablet or the other.(gel).

Whole Food Diet: You've just demonstrated the problems with taking vitamins- Except for Vit's A,D,E & K which are stored in fat, most vitamins are 'water-soluble' and not stored. So, we have the healthiest toilets in the world! Don't worry, you'll get enough of the nutrients either way/pill- but please eat a 'who;e food' based diet- your body will absorb what it needs, when it needs it, never too much or little!