Glad to hear you are doing well.

Have you ever looked into the specs of homeopathic Arnica Montana ? The common formula is so diluted that it is equal to an Olympic size pool of water with a single molecule of Arnica Montana.

Never discount the value of the placebo effect. Some studies show that the placebo effect can benefit 60% of patients.

Wiki explains homeopathic dilutions at http://en.wikipedia.org/wiki/Homeopathic_dilutions

The placebo effect can be strong with concussion since belief in healing can reduce stress levels that leads to the brain having a better chance to heal.