This is the only formula that he does not spit up with or have bad stomach cramps, gas

The powder is hurting my sons stomach terribly bad

The minute the milk hits your stomach, you might get stomach spasms (yes, spasms) and/or searing heartburn, which REALLY HURTS, and unless you're doubled over in pain or spitting up-- which you may or may not be, depending on the day-- you can't really explain it to people, so you start to think maybe its just normal to feel this way.

Both my children had to use this formula due to gassy, fussy, crying, upset stomachs

If it works as it did for me, you really should let others know because it is such a helpless feeling to have to go through.