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Hi, I take about 6mg of melatonin before i go to sleep. Sometimes at 11 , sometimes at 10, ,,,but many times if I had a CH that day, it will return and wake my up ussually 12:30am. Is this just coincidence regarding the exact time ? Any tips for prevention of night attacks? I may have CH at 10am , then 12PM ,but almost always a night attack around 12:30am after falling asleep . If I dont have a CH day time , its very rare that I would get one at night. Thank you.