Boleh je makan collagen supplement while breastfeeding, tapi better check with your doctor or lactation consultant first to make sure it's the right type for you, a few of my mum friends took collagen during bf and fine je, tapi kan setiap orang lain. Collagen helps with skin elasticity and joint health which mums need jugak, but best to confirm the brand and dosage with someone who knows your health history!