My daughter, who was born premature, is very underweight for her age and I have had issues with getting her to eat the amount of food she should. Her pediatrician was worried that because she wasn't drinking enough milk, nor was she eating her baby food like she should have been so she suggested Enfamil Poly-vi-sol. I must say I am very happy with these vitamins because I am happy knowing that on days my daughter just doesn't have an appetite that she is still getting some of the vitamins she is missing out on from her food. Although the flavor is terrible and Poly vi sol stinks I've learned a technique of sticking the dropper in the side of my daughter's cheek that way she swallows the liquid automatically without spitting it out. At first I would mix it up in my daughter's milk so she would not taste it, or at the very least if she did taste it the flavor wouldn't be as strong but I realized that when doing that she still wasn't getting all of the vitamins she needed since at times she wouldn't finish the bottle or the food I was feeding her.