After our analysis, we came to the conclusion. California Gold Nutrition TheanineUP is the winner in this comparison and gets 4.6 VSR. Its competitor Natural Factors Suntheanine earns 7.5 VSR. The gap in rating was affected in the first place by the price, the cost of 1000 mg of L-Theanine of California Gold Nutrition TheanineUP is $ 1.8 as against $ 2.44 of Natural Factors Suntheanine. One serving of California Gold Nutrition TheanineUP contains 100 mg L-Theanine as against 250 mg in one Natural Factors Suntheanine serving At the same time, a serving of California Gold Nutrition TheanineUP costs $ 0.18, and a serving of Natural Factors Suntheanine costs $ 0.61.
California Gold Nutrition TheanineUP has no taste, the manufacturer makes it unflavored. Natural Factors Suntheanine has no taste, the manufacturer produces it unflavored.
California Gold Nutrition TheanineUP and Natural Factors Suntheanine have only one size, California Gold Nutrition TheanineUP has 60 capsule(s) and Natural Factors Suntheanine has 60 capsule(s), 60 tablet(s).
We recommend buying Natural Factors Suntheanine.