This is a formula specifically designed for preemies. It contains a higher calorie count than other formulas. My twins were born 5 weeks early and were given this formula in the NICU and we were sent home with cans of it. Four month later my twins are growing wonderfully and on track with other kids their age. The formula mixes much better than other ones. There are never any clumps floating around in the bottles. Neither of my babies spit up much, if at all, and they burp like champs. The Dr tried to switch my girl twin to Enfamil gentlease because she thought she was having tummy problems because she was so crabby at one of their checkups. Turns out I just have a crabby girl (I already knew that) because she started spitting up and never passing gas or pooping when changed to gentlease. Ever since being switched back to Enfacare she has been back to her normal self. I swear by this stuff and definitely will continue using it until they turn a year old. Easily Digested Has never caused tummy problems with either twin. Ease of Preparation Mixes very well. No clumps in formula.