Ay, maraming babies talaga ang may ganyan sa Similac, lalo na if newly transitioned pa lang! A few of us mums noticed na some formulas are just naturally looser compared sa iba, kaya hindi agad alarming kung wala nang fever or unusual behavior, pero kung super frequent na or may blood/mucus, better check with your pedia para sure lang. Gaano katagal na niya ginagamit ang formula na yan, and does baby seem okay pa rin otherwise?