At my center, Enhance750 replaced FB500. The literature I have on Enhance750 states:
Helps fat metabolism, promotes lean muscle mass, contains St. John's Wort known to stabilize mood, supports healthy cholesterol levels.
Enhance750 supports healthy cholesterol levels, stress tolerance, and restful sleep. It supports metabolic function, promotes lean muscle mass and contains St. John's Wort, which may stabilize your mood.
Hope this helps!