Fein Energy Crystals
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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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Caffeine Concentration
Fein Energy Crystals contains 9.38 mgs of caffeine per fluid ounce (31.70mg/100 ml).
Caffeine (mg) per Ounce
10090807060 5040302010 0 Fein Energy Crystals 5 Hour Energy Coffee (Espresso) Coca-Cola Classic Spike Energy Drink
Sources
http://kingofcaffeine.com
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