Shubha
Soak 1 spoon of Isoop Goal (Ayurvedic seeds of a Flower) in 1 cup of water and let it blow a bit and let liquid becomes slimy. Feed 1-2 spoon of Isoop Goal liquid in all the food that you give to your infant. This is a precautionary method for avioding constimation without any side effects. I have tried it on my 7 month old infant and it works perfect.
Isabgol is basically just psyllium husk - the ingredient in bulk forming stool softeners. In Isabgol, it is unflavored and natural.