Honestly, I haven't tried Frisolac Comfort specifically, but a few of my mum friends yang guna formula brands lain cakap constipation memang common issue masa awal-awal, especially kalau baby belum adjust, biasanya jadi normal dalam seminggu atau dua. Setiap baby lain-lain tolerance, so macam my friend Siti, her baby kat Frisolac taklah berapa problem, tapi friend lain kena switch because of the berak issue. I'd say observe your baby's poop pattern for a few days, and if really teruk sangat, boleh cakap dengan PD, or some of us pernah try alternate with breast milk or switch formula, tapi it's worth giving at least a week or two first sebab timing adjustment.