Google Dr. Brian McGeeney Cannabinoids and Hallucinogens in treating headache. It's on Medscape. Should help you answer those questions. Good questions.
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I have found, substances that make me drowsy, are a triggah. That includes melatonin. I would say also in my mind melatonin is a more of a sleep aid than a prevent...thats my expierence. Again ,as always, responses are very individual it seems.
Good question chfather.
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