This product was a lifesaver when my son was an infant! My son was colicky/ gassy, and the Similac Sensitive just wasn't working for him. Gas drops were not working either. After doing some research, we tried out Similac Alimentum
, and it worked wonders! My son no longer cried for hours on end, and it helped relieve his gas. I only gave it 4 stars because of the price. It is quite expensive, but well worth it for a happy healthy baby!