Small sample but not feeling anything

Got this as a sampler two packets of two pills to be taken two a day so two days to show results effects the package says on it "I feel it" well I didn't not one to jump on the multivitamin wagon myself normally I prefer to take vitamins for specific needs but thought I would see what I was missing I did not experience any sudden jolt of "energy stamina recovery" which is on the label sorry girls you might say how can you tell after only 2 days but I figure if that's the sample they send you they must think it's enough to do a review on it Just didn't do it for me but I dont find significant effect from most multi vitamin s