i had my dd on zoton (simialr to losec) and it help only a little bit , BUT i have taken her to accupuncture (no needles for babies , they do a special pressure point/ meridian treatment)
and sice then she is a different baby and i have not medicated her since ..

maybe try other avenues for his restlessness , osteopath /chiro/appuputncre/massage ..
saves you wasting $$ on medcations and most natural therapies are non invasive ...