I have a son who never stops. From the moment his eyes open, till he passes out, he is moving. He has problems with impulse control and focusing. Once it was time to start school, we were desperate to find ways to help him succeed.
We started other fish oils, but they were made using sugar and food colouring. Things that we have learned he needs to avoid.
We started him on the maximum dose of equazen, and after a few weeks (it needs to build up) we were noticing a difference.
It is not a quick fix, it takes time. And it is not a miracle worker, he still has focus and impulse issues.
However, taking the fish oils has helped him just enough that we can work with him to help him succeed in school.
We also notice the difference when we have forgotten to give it to him for a few days.

It is a bit pricey from 45$-55$, but it is not made with fillers, just the capsule and a few ingredients to make it palatable.
No sugar or dyes
The first week his stools were quite loose, but that resolved itself quickly
It helps