Comparison

L-Methionine 500 mg and Free Form Amino Acid L-Methionine W/Vitamin B-6 500 mg

L-Methionine 500 mg (Country Life) lists 3 distinct ingredients and Free Form Amino Acid L-Methionine W/Vitamin B-6 500 mg (Nature's Plus) 2 (rows of one ingredient counted once); 2 are on both labels. On the site's similarity measure, which compares ingredient lists (1 for the same list, rarer ingredients counting for more; amounts are not part of it), the two formulas score 0.78.

Amount per serving (and % of the Daily Value)
IngredientL-Methionine 500 mgFree Form Amino Acid L-Methionine W/Vitamin B-6 500 mg
Vitamin B68.5 mg (500%)50 mg (2941%)
METHIONINE500 mg500 mg
Calcium72 mg (6%)

Amounts are per serving as DSLD gives them: L-Methionine 500 mg, 1 tablet; Free Form Amino Acid L-Methionine W/Vitamin B-6 500 mg, 1 capsule. Current labels entered May 2019 and October 2012. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own