E-Caffeine Ingredients: 100% Pure UPS Kosher Grade Caffeine Powder liquified for mixing use. Also contains Propylene Glycol. Usage Rate: No more than 500mg in a 24 hour period. Use at your own risk, Keep out the reach of children. This item (Blended Caffeine) is not recommended for consumption in beverages. Directions: Warm Blended Caffeine up to thoroughly dissolve caffeine in base before mixing in with your product. Ratio: 4.24mg per mL. Mixing Instructions: Mix in E-Caffeine to base at 5% to get a total volume of 10mg of caffeine. Add more % of E-Caffeine to achieve the desired caffeine level. Not to exceed a total volume of 80mg.