"i have extreme insomnia my dr has prescribed every medication for insomnia either i had bad reactions to it or didn&#039;t help at all so yesterday my dr prescribed otc melatonin i took one pill 3 mg i  had a very restful 5-6 hrs~i&#039;m going to try 1/2 of a pill to to get a full night sleep~i&#039;ll see how a 5 mg dose will work~but i was just happy that the 3mg gave me a restful few hrs. i&#039;ll report if the 1 1/2 pills helps me stay asleep for 8 hrs. right now i&#039;m thankful that i actually went to sleep and had a few good hrs of rest &amp; sleep. no side effects !"