How much time does melatonin make me sleep for?

It helps begin sleep: Melatonin primarily promotes the onset of sleep. It does not necessarily control sleep duration, which is more likely to be affected by pre-sleep routine, stress, underlying sleep/dream state disturbances, and any medical conditions you may have. If you feel your sleep quality/quantity is low, you should seek out a sleep specialist. Reference: www.nlm.nih.gov/medlineplus/druginfo/natural/940.html