teaaquinn,

Welcome to NeuroTalk. I have never heard of deer antler velvet being used for concussion symptoms. I suggest you give it time to clear your system. You should also read the Vitamins sticky at the top to provide your brain maximum nutrition so it can cleanse itself of the toxins of your injury and any other toxins you may ingest.

You are early in your recovery so a conservative approach to let the brain heal is worthwhile.

My best to you.