Comparison

Amplified Muscle Igniter 4X Tropical Punch and Thermo Burst Hardcore

Amplified Muscle Igniter 4X Tropical Punch (GNC Pro Performance AMP Advanced Muscle Performance) lists 20 distinct ingredients and Thermo Burst Hardcore (GNC Pro Performance) 18 (rows of one ingredient counted once); 17 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 0.84.

Amount per serving (and % of the Daily Value)
IngredientAmplified Muscle Igniter 4X Tropical PunchThermo Burst Hardcore
Vitamin C120 mg (133%)120 mg (133%)
Vitamin B62 mg (118%)2 mg (118%)
Niacin40 mg (250%)20 mg (125%)
Pantothenic Acid (Vitamin B5)10 mg (200%)10 mg (200%)
Green Teanot disclosednot disclosed
Gingernot disclosed500 mg
Caffeine200 mgnot disclosed
Grapenot disclosed1 mg
Black Peppernot disclosednot disclosed
Capsicumnot disclosednot disclosed
L-Carnitinenot disclosed25 mg
Schisandranot disclosed100 mg
Guarananot disclosed422 mg
Yohimbenot disclosednot disclosed
Matenot disclosed500 mg
Black Teanot disclosed100 mg
Dillnot disclosed5 mg
Carbohydrate5 g
Sugar0 g
Fenugreeknot disclosed
GABAnot disclosed

Amounts are per serving as DSLD gives them: Amplified Muscle Igniter 4X Tropical Punch, 5.97 g; Thermo Burst Hardcore, 3 tablets. Current labels entered February 2012 and January 2012. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own