"i took the only melatonin in my house at the time which was 5mg. since school had started i found it really hard to go to bed before 10 and i would just lay in bed waiting. i took this and it really helped me fall asleep but i&#039;ve been really sleepy ever since. i took it 2 nights ago and i&#039;m still sleepy and its really annoying. i think 5 mg is way too much. i&#039;ll only ever take small doses"