I bought this couple months ago as a sample. I was reluctant to use it as for a couple days i have been able to sleep without it, however i kept waking up in the middle of the night.
Yesterday i gave a try with this sample. Upon consuming it with dinner, i felt very positive and the relief of being able to drift off. This emotion i have not had for a very long time since i have ptsd from military expeditions. Stressful and active mindset has led me to develop a mind in which is almost difficult to drift off. In occasions where i do fall asleep i would wake up a hour after.
With the consumption of Ninja zen, i have been able to have a Deep Rem sleep without disruption. I will recommend. I woke up fresh and not sluggish so the ingredients seem to work and of quality. However this review is only for sample one time use, i have not used it on the longeron.