Strong stuff- I only take half a capsule and sleep through the night
I don't understand the reviews that claimed this product was weak.  It's just as strong as every other brand I've used.  I always eyeball about 1/2 the capsule and pour it out (regardless of brand) because 500mg is too much for me and nobody makes a 250mg capsule.  If I take a whole capsule of any brand I feel tired the next day.
Rating: 5 stars