L-Lysine

L-lysine tablets and capsules in packs of 100 to 300, and a powder of about 454 g. Per-unit strengths in the titles are 500 mg, 620 mg and 1,000 mg; some capsules are described as free-form, others as vegetable capsules (vcaps). The ingredient list names what a tablet is pressed with, such as binders or a coating, and what a capsule shell is made of, so compare those lines as well as the milligrams of lysine per serving. The servings in a pack are its tablets or capsules divided by the number in a daily serving.

Frequently asked questions

What does free-form mean on an L-lysine label?

Free-form means the amino acid is supplied as the individual molecule, not bound into a protein or a peptide. The ingredient list names the exact compound, for example L-lysine or L-lysine hydrochloride, and the nutrition table states the amount per serving.

How do L-lysine tablets and capsules differ on the label?

A tablet is pressed from powder, often with binders or a coating, which the ingredient list names. A capsule is a shell filled with powder, named in the list as gelatine or a plant-based material. In both, the nutrition table gives the lysine per serving, and allergens are emphasised in the ingredient list.

Is one 1,000 mg L-lysine tablet the same as two 500 mg tablets?

In the amount of lysine, yes, if both labels state the amount in the same way: two 500 mg tablets give 1,000 mg. What differs is the number of tablets in a serving and in the pack, so compare the amount per serving and the servings per pack rather than the strength of a single tablet.

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NOW Foods L-Lysine, 1000mg - 100 tablets

NOW Foods L-Lysine, 1000mg (Powder) - 454 grams

NOW Foods L-Lysine, 500mg - 100 vcaps

NOW Foods L-Lysine, 500mg - 250 tablets

Life Extension L-Lysine, 620mg - 100 vcaps

Swanson Lysine, 500mg Free-Form - 100 caps

Swanson Lysine, 500mg Free-Form - 300 caps

NOW Foods L-Lysine, 500mg - 250 vcaps

Frequently asked questions