Does anyone know how to cure Salvia flashbacks?!

Does anyone know how to cure Salvia flashbacks?

About a month ago a friend of mine smoked salvia divinorum, and had a terrible experience. Ever since, he's been having horrifying flashbacks about 2-3 times per day. He used to practice shamanism, tarot, theta healing, etc...but ever since trying salvia, he keeps having flashbacks when he tries to journey and he is unable to. He's been to the doctor and had several theta rituals performed on him, but nothing seems to work. If you have any advice, I would love to hear it. Thank you.

3 weeks ago
I know he only took one hit, but I'm not sure of the concentration. He also has experienced flashbacks when he is intoxicated with alcohol or marijuana...so he's pretty much quit all of those, too.

what did he smoke too much of 30x or something. This sounds highly unusual even if so. I think it is a far deeper psychological problem for your friend. He needs to counter the effects by going on a 3-4 day camping trip and drinking several beers each night and getting close to nature.

This story reminds me a bit about guy I used to know. He was a heavy drug user for years and then quit everything for 4 years during university. Afterwards it became apparent to everyone that he was a bit off (even though he was an exceptional student in a very difficult science major). After graduating he slowly picked back up on recreational drug use, but not like before. And then, there was a one-off just random encounter with drug much like A/D (that he had used many times before) and the effects after were much like you were describing. It turned out that he had been afflicted with a form of schitzophrenia for years and this little incident brought it out in the open and intensified it. Well,..sorry for this long set-up, but to answer your question, I believe one thing that might help your friend would be to "overdose" on vitamin c (2-3000mg) daily. I have read many alternative healing and herbal remedy books and this approach has shown success in many individuals in similar situation. It greatly helped the one mentioned above.
Also, it sounds that at the core of your friends problems is religion. That is the great thing about some of these drugs, in that, they help to prove religious points in a way they really shouldn't. If you really have a bad trip or feel like you are being possessed by demons or demonic aliens..., just try praying to god in Jesus name and really believing in your heart and see if it doesn't work.