Be careful...St. Johns is a mild SSRI, which is a potentially dangerous combination with MDMA. I believe you're supposed to be off of it for at least 2 weeks before taking any e. However I have heard good things about it lowering peoples' tolerance to MDMA so to speak, as I believe it helps regulate your 5-ht network in a healthy way.
Just be careful dude, don't wanna get serotonin syndrome....tis a scary experience.
Personally, a big breakfast, some weed, and possibly some piracetam/aniracetam are my morning after remedies.