I started using 5 HTP for sleep issues because I realized I wasn't going into a deep sleep. I take 1 -2 50mg of 5 HTP about 1-2 hours before bed time.
One of the results is that my jaw feels more relaxed in the morning. I feel I wasn't sleeping because I wasn't producing enough serotonin. Because I am now going into a deep sleep, I don't seem to be grinding my teeth.
More 5 HTP is not better as the dreams become real vivid. My body seems to be trained now ... as I naturally get sleepy in the evening, unlike before 5 HTP.