I have been on an EC stack for about two weeks now, and I've already built a nice tolerance, but I haven't been ramping doses because I don't feel the need to. Sometimes I take melatonin to go to sleep at night, especially if my mind is still going strong. Usually just one pill, 2.5 mg, sometimes 5. I have been having severe mood swings and depression lately, and I have a lot of irritability towards others. I assume all this is connected but I just wanted to make sure.