Is it good to give fish oil to infant? If so, what brand to buy? Thank you in advance.

You can buy DHA Fish Oil. It's available in IHERB. https://www.iherb.com/pr/Nordic-Naturals-Baby-s-DHA-with-Vitamin-D3-2-fl-oz-60-ml/23058

Yes it's good to give! I do give them DHA Fish Oil from Nordic. But i would wait till they are 3mo before offering them

you can stop at a age u feel comfortable or at a age that they can eat solids