Comparison

gPLC Glycine Propionyl L-Carnitine and Glycine Propionyl-L-Carnitine HCl GPLC 840 mg

gPLC Glycine Propionyl L-Carnitine (Solgar) lists 4 distinct ingredients and Glycine Propionyl-L-Carnitine HCl GPLC 840 mg (Swanson Ultra) 3 (rows of one ingredient counted once); 3 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 0.92.

Amount per serving (and % of the Daily Value)
IngredientgPLC Glycine Propionyl L-CarnitineGlycine Propionyl-L-Carnitine HCl GPLC 840 mg
Glycine210 mg176 mg
Glycine propionyl-l-carnitine925 mg840 mg
Propionyl-L-Carnitine600 mg554 mg
Carbohydrate1 g

Amounts are per serving as DSLD gives them: gPLC Glycine Propionyl L-Carnitine, 1 tablet; Glycine Propionyl-L-Carnitine HCl GPLC 840 mg, 1 veggie capsule. Current labels entered February 2020 and May 2018. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own