After our analysis, we came to the conclusion. Life Extension Natural Stress Relief wins in this battle and gets 3.1 VSR. Its rival Natural Factors Suntheanine receives 7.5 VSR. The gap in rating was affected in the first place by the price of L-Theanine, thus 1000 mg of L-Theanine of Life Extension Natural Stress Relief going to cost you $ 3.5, as against $ 2.44 of Natural Factors Suntheanine. The serving of Life Extension Natural Stress Relief contains 200 mg L-Theanine as against 250 mg of Natural Factors Suntheanine For a serving of Life Extension Natural Stress Relief you will pay $ 0.70 , and a for a serving of Natural Factors Suntheanine you will have to pay $ 0.61.
Life Extension Natural Stress Relief has no taste, the manufacturer makes it unflavored. Natural Factors Suntheanine has no taste, the manufacturer makes it unflavored.
Life Extension Natural Stress Relief and Natural Factors Suntheanine have only one size, Life Extension Natural Stress Relief has 30 capsule(s) and Natural Factors Suntheanine has 60 capsule(s), 60 tablet(s).
We recommend buying Natural Factors Suntheanine.