I took my first dose, 20 micro mg morning time, read insomnia been a side affect but assumed it would be no problem as my anti depressant medication knocks me out every night, that night didn't sleep till 3 or 4 in the morning, that was ok, next day I increased to 40 mmg, that night was hell, literally didn't sleep a wink or I was semi asleep but still awake had really bad nightmares, I suffer from bad depression and a lack of sleep sets it off more then anything had two hellish days of severe depression from that one night of no sleep, obviously stopped taking it will never put myself through that hell again, checked the scale think I lost close to half a stone in a week, having increased oxygen airflow was a major benefit in the gym, I'll never again take over 20 mmg if I do decide to continue but what can I do about the insomnia?, I read anti histamines will close up the air way passages, is it just the increased air flow that causes the insomnia?, also can I just take it causally seeing as I can never go over 20 mmg again or does it have to be stacked?