My daughter poops once in 4 days from the past 3 months. She drinks enough water. Since when she was 9 months old,she had constipation and poops only once in two days. We tried giving her oats on a daily basis and she used to poop everyday. But now it is 3 months that even if we give her oats she is not pooping.We consulted a doctor and he suggested Duphalac suspension. But we are concerned about giving it often. Is this a serious issue. Should I consult an expert on this. Is there any natural remedy?