I'm not a fan of most multivitamins. Especially, those one a days. Main problem, the vitamins and minerals found in those supplements are synthetic man made "chemicals". They are not the same as whats found in an actual food. Also, many "multivitamins" today have fillers and other crap items we don't need that should NOT be in there.
Unless you're deficient in any one of those micro nutrients. You won't become any "healthier". So, why bother?
One important thing to remember - NO vitamin or mineral will give you energy or make you feel more "energized". Unless, you were specifically deficient in a vitamin or mineral (Mainly from the B family).
More than likely what you felt was a psychological affect. The amount of Green tea and guarna in the supplement I doubt is near enough to cause any affect beyond a negligible one.
If you want green tea and guarna. Drink green tea and a straight guarna supplement.