Other than caffeine, the ingredients list in GNC Burn 60 does not seem to include any other metabolism-boosting components.
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Lean Balance
Lean Balance fat burner contains a tri-plex of calcium, which is intended to help increase the rate at which the body burns body fat.
GNC Total Lean
GNC Total Lean is an ephedra-free formula that is considered a safe and effective way to stimulate your metabolism.