Natural Caffeine 100MG + L-Theanine 200MG

I have tried caffeine pills from a few other brands. Since it was not natural caffeine it would upset my stomach. Plus it would overstimulate me to a point I wouldn't be able to do my work or study. This one has the perfect ratio of caffeine and theanine. Those who use caffeine for study/work need not look beyond this one. I take two pills everyday, one in the morning and one in the afternoon. The effect lasts me throughout the day. I feel no crash whatsoever. But if you take caffeine for workout take it without theanine.