It sure would be great if your doctor would provide some references for us to check out. The only study I have found discusses the neuro-protective value of progesterone, not an healing value. Neuro-protective means that when there is an insult to the brain cells, the progesterone helps the cells endure the insult without sustaining damage.

Most damage from a concussion occurs in the days after the impact. This delayed damage is the target of progesterone research.

See the first article from 2006 at:
http://www.medscape.com/viewarticle/545573

A just published report (Dec. 22, 2009) is at:
http://www.medpagetoday.com/Critical...adTrauma/17652
It mentions treatment at time of injury and for several days thereafter.

The trials that are planned or ongoing are designed to recruit participants at the Emergency Room since this is the first access to the newly injured.

The Emory University study of this past year used a Glascow Coma Scale of 4 to 12 as a qualifier for participation in the study. As a GCS of 12 is usually considered more than an MTBI or concussion, PCS subjects would not qualify.

It will be great when progesterone becomes a routine treatment for any concussion resulting in any depression of GCS score, even if for only a short duration and only immediately after the impact. Subjects with a history of a previous concussion would likely benefit as a preventative of second impact syndrome/multiple impact syndrome.