We’ve compared Life Extension L-Tryptophan with Source Naturals L-Tryptophan + Coenzyme B6 and determined the following. Life Extension L-Tryptophan takes first place in this comparison and gets 1.8 VSR. Its adversary Source Naturals L-Tryptophan + Coenzyme B6 earns 5.6 VSR. The gap in rating was affected in the first place by the price, the cost of 1000 mg of L-Tryptophan of Life Extension L-Tryptophan is $ 0.56 as against $ 0.53 of Source Naturals L-Tryptophan + Coenzyme B6. One serving of Life Extension L-Tryptophan contains 500 mg L-Tryptophan as against 1500 mg of Source Naturals L-Tryptophan + Coenzyme B6 At the same time, a serving of Life Extension L-Tryptophan costs $ 0.28, and a serving of Source Naturals L-Tryptophan + Coenzyme B6 costs $ 0.79.
Life Extension L-Tryptophan has no taste, the manufacturer makes it unflavored. Source Naturals L-Tryptophan + Coenzyme B6 has no taste, the manufacturer makes it unflavored.
Life Extension L-Tryptophan and Source Naturals L-Tryptophan + Coenzyme B6 have only one size, Life Extension L-Tryptophan has 90 capsule(s) and Source Naturals L-Tryptophan + Coenzyme B6 has 60 tablet(s).
We recommend buying Source Naturals L-Tryptophan + Coenzyme B6.