I suffer from adrenal fatigue (low cortisol) and atypical depression so I decided to try melatonin the last couple of nights to try to give my adrenals some well needed rest. Typically I only average between 5 to 6 hours of sleep per night but the last couple of nights I only got about 3.5 hours of sleep. First night I only did 1mg and last night I did 2mg and with upping the dosage I still only got 3.5 hours of sleep. Why am I getting less sleep taking melatonin? I have read where it can have the opposite effect with some people and I am wondering why this happens? Anyone else have the same experience?