I don't know if Valdoxan (Agomelatine) is licenced where you are, it is an antidepressant that works on melatonin and restores the body's natural circadian rhythmns. Since I've been taking it my sleep has been very natural, 8 hours, no significant episodes of wakening, and far fewer dreams than I was getting on SNRI / SSRI meds. Sadly as far as my mood is concerned it isn't doing much, but I'm reluctant to change meds again and the benefit to my sleep pattern is a definite advantage. The best part is that there is no residual drowsiness in the daytime.