If your baby is allergic to breast milk, you can try Furilac. It is among the top 5 infant formulas in India. In many cases, children become lactose intolerant i.e. milk allergy. In this case, you can try L-Zero, a potentially active lactose-free formula.
https://furiousnutritions.com/to-increase-the-weight-of-the-baby-can-we-give-formula-milk-instead-of-breast-milk/