We’ve compared Source Naturals L-Lysine with 21st Century L-Lysine. 7.9 VSR - that’s how many Source Naturals L-Lysine receives, so he is the winner, its rival 21st Century L-Lysine gains 7.3 VSR. The enormous gap in rating was affected in the first place by the price, the cost of 1000 mg of L-Lysine (L-Lysine HCL) of Source Naturals L-Lysine is $ 0.12 as against $ 0.08 of 21st Century L-Lysine. One serving of Source Naturals L-Lysine contains 500 mg L-Lysine (L-Lysine HCL) as against 600 mg in one 21st Century L-Lysine serving For a serving of Source Naturals L-Lysine you will pay $ 0.06 , and a for a serving of 21st Century L-Lysine you will have to pay $ 0.05.
Source Naturals L-Lysine has no taste, the manufacturer makes it unflavored. 21st Century L-Lysine has no taste, the manufacturer produces it unflavored.
Source Naturals makes available 4 different sizes of L-Lysine. 21st Century L-Lysine has just one size, 90 Tablet(s).
We recommend buying Source Naturals L-Lysine.