Hi L.,
Have you heard of homemade goat milk infant formula?
http://tinyurl.com/6hnqut
I'm a nutritionist, and it has been a life saver for so many babies (including mine) who thrive on it after doing terribly on any kind of commercial infant formula.
Your baby's symptoms may continue to persist even after changing formulas as all commercial formulas are made from pasteurized cow milk which is missing the natural enzymes and probiotics which help break down and digest the milk proteins, fats, and lactose. Babies often react with constipation and/or diahrhea, gas, skin rashes, crying fits, or colic. Digestive issues in babies on formula is rarely about lactose problem, but usually about not breaking down the pasteurized milk proteins or fats.
Also, the hypoallergenic formula is not an ideal one as my Ped explained and is meant as a short term fix as it is ultra processed with many synthetic ingredients and not balanced.
I went through hell and back with my baby who I finally figured out was intolerant to cow's milk protein (I could not eat any pasteurized cow dairy or my breastmilk would make her sick). She is 1 now, and to this day she cannot drink any commercial infant formula of any kind, or pasteurized cow milk or she gets all kinds of symptoms. I found a Yahoo health chat group (NewWAPHB) with thousands of moms who had the same issues (or just wanted to give their babies something better than formula when breastfeeding was not an option).
The solution for us was the homemade infant formula. http://tinyurl.com/6hnqut
Not only is it far more nutritious than any commercial formula, it is so well digested and relieves a lot of common GI and skin symptoms. I spent many week researching this topic and learned a ton. The Drs at my Pediatrician's office fully support the "homemade recipe" after having seen such remarkable results. Many Drs don't know about it. They have to read up on it since many babies are suffering needlessly!
Also, don't use soy formula. Terrible for babies.
http://tinyurl.com/6da25v
After you do your research, if you decide to keep your baby on the commercial infant formula, here are some nutrients you can add into it to help with digestive issues in general:
Infant Probiotics: HLC Natogen by Pharmax (1/8 tsp p/day)
Cod Liver Oil by Pharmax (mercury free) 1/2 tsp p/day
Coconut oil (2 tsp per day)
http://tinyurl.com/6q7b89
The probiotics help heal the intestines and help them digest better which helps constipation/diarrhea. And the Cod Oil and coconut oil help lubricate the intestines allowing for less straining. In addition, the cod oil contains the most well absorbed form of omega 3s and vitamin D. Critically important for infants for brain health, immune system, and prevention of disease.
-A. R.