If a mom wants to use formula to feed her infant or to supplement breastfeeding, she is faced with lots of choices. There are many kinds of formula with many different added ingredients. There is both the brand names and the generic or “store brand” formulas. Finally, there are milk-based (made from milk product) and soy-based (made from soy beans).
Many of the additive products claim to “help decrease gas” or “quiet baby’s tummy”. These are mostly marketing tools aimed at the desperate mom with a fussy baby who will do anything to get a good night’s sleep. The same is true for “rice added” to eliminate “reflux” and “lactose-free” products. Milk-based formulas are all the same and the claims that they decrease fussiness are rarely based on any real science. I have always contended that the generic formulas were as good as the brand names, but in the last years of my career, many generic products were being produced in a country that was proven to be untrustworthy in many of the products that it shipped to America. There were even infant deaths in that country from drinking unsafe formula. After years of recommending generic formulas and medications, I had to stop doing it and start recommending brand names. It is a difficult choice for young parents on a tight budget. Not only do I recommend brand-name formulas, but they should contain long-chain polyunsaturated fatty acids (LCPUFAs) which have been shown to improve infant's vision.
The real difference in formulas is the base product they are made from. Some infants are allergic to milk and cannot drink milk-based formulas. This is not “lactose intolerance”, which only very rarely exists in infants, but true allergy. These infants are much more fussy, especially after eating. Most infants fuss a little during or after eating because food in the stomach causes increased intestinal movement and the sensation is new and unpleasant to them. But milk allergic infants fuss a lot and stop feeding and cry even when they are still hungry. Another good sign of milk allergy is loose or bloody stools. This is not superficial, streaky blood in the stool, which is usually caused by a small tear in the rectum, but blood mixed in with the stool. The milk-allergic baby may also have poor weight gain. If your infant has problems feeding, especially if people in your family have lots of allergies, try a soy-based formula. If the infant is milk allergic, the problems should improve rapidly – within a week. If the problem continues or seems at anytime to be getting worse, see your caregiver.