Fein Energy Crystals
Fein energy crystals can be added to any favorite beverage, even water, to make it an energy drink without altering the flavor. Fein's formula is all-natural caffeine citrate and a suite of secret, 100-percent natural "taste erasers."
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Ingredients in Fein Energy Crystals
Sugar content: Contains no sugar.Compare sugar levels of other drinks
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Fein Energy Crystals contains 9.38 mgs of caffeine per fluid ounce (31.70mg/100 ml).