When issuing medical certificates, the FAA considers first the medical condition and then the medication.

I know of a few cases of people being approved for using St. John's Wort. However, in all of those cases, there was NO UNDERLYING PSYCHIATRIC condition. That is the key. The medication itself is often not the issue, it is the condition that it is treating that the FAA is concerned with.

I used to be close to this outfit when they were in their old location. They have moved to OKC now and have a reputation all across the industry of helping pilots with medical issues. Give them a call and they can definately provide guidance based on your specific situation.

http://www.leftseat.com/