Fein Energy Crystals
- Caffeine level75 mg
- Caffeine strengthMODERATE
- Serving size
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."
Ingredients in Fein Energy Crystals
This is a sugar-free energy drink - compare with other sugar-free energy drinks.
Compared to Other Items
Fein Energy Crystals contains 9.38 milligrams of caffeine per fluid ounce (31.70 mg per 100 ml). A 8 fl oz packet has a total of 75 milligrams of caffeine.