At our one year check up our pediatrician told us the time was now right to switch from Tri-Vi-Sol to Poly-Vi-Sol vitamins. Thankfully, LTD still doesn’t mind the taste and sucks it down without incident. These new drops have nine vitamins to supplement anything he isn’t getting from his diet. While he eats a lot of fruits and vegetables you never what he is lacking at any given meal. But, like the Tri-Vi-Sol the main reason to take the vitamins is for the vitamin D since the little guy is not in the sun that much. The Mommy orders the stuff from Diapers.com, but it takes a long time to go through a bottle. The only challenging part is remembering to give them to him every morning with breakfast.