I would highly recommend Nordic Naturals. I purchased for my (now) 3 month old as I am not breastfeeding and the formula I’m using (Holle) doesn’t contain added DHA. I like it so much I want to continue to use it, even though I plan to switch formulas (to one that does contain DHA)! It’s really easy to administer; I just encourage my baby to open his mouth and give it to him direct, which he takes no problem (despite fishiness!). It’s really encouraging to have found such a respectable, trustworthy brand and source of DHA for my baby, and I’m thankful I have been able to supplement with this. Would highly recommend to anyone thinking about purchasing.