MRM Relax-All is a great product, in my opinion. It isn't like Valium or Xanax though -- don't expect a "forced" sense of relaxation. If you're anxious or tense it will help greatly, but if you aren't you may notice no effects at all. Nor does it cause drowsiness or a desire to sleep, despite hints on the labeling. The L-Theanine (and possibly phenibut) contribute to an overall feeling of calm alertness and well-being, and I've found that it can actually help with alertness when one is sleep deprived. Four tablets are about the right amount for me. Recommended!