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Best Protein Powder

GNC Pro Performance protein powders

3 powders checked · 2 third-party tested · owned by GNC Holdings

GNC Pro Performance

Pro Performance 100% Whey (2.0)

Whey Blend · 33 g scoop
No third-party testing found
Protein
25g
Sugar
1g
Our score
67/100
Price not verifiedChecked 2026-10-13
GNC Pro Performance

Pro Performance Weight Gainer

Mass Gainer · 185.4 g scoop
Informed ChoiceInformed Sport
Protein
50g
Sugar
—
Our score
65/100
$7.00 / servingChecked 2026-10-13
GNC Pro Performance

Pro Performance Bulk 1340

Mass Gainer · 361 g scoop
Informed Choice15 g sugar
Protein
50g
Sugar
15g
Our score
48/100
Price not verifiedChecked 2026-10-13