The adjustable 400IU to 1000IU servings are a lifesaver since my kids are different ages, and the dropper makes the tiny doses so easy to measure out. I've been giving it after breakfast and it's become a calm part of our routine that I actually look forward to, no fuss at all.
The 1000IU serving works well for my older kid, and I like that the 600IU option exists for when the younger one needs a smaller dose. The drops themselves have no strong taste, which is a win after trying other supplements that ended up in the trash. Just wish the bottle came with clearer dosage ma