Answer

1 serving of Charged ketones, has the equivalent amount of caffeine as 12-16 oz of brewed coffee, which boosts the uptake of ketones into our system quicker than uncharged.
If you struggle with sensitivities to caffeine, or struggle with sleep, then taking the uncharged version, will be just as effective for you.
If you are opting for 2 servings per day, most people take 1 charged in the morning, then uncharged in the afternoon. Those with very high tolerances to caffeine, can drink two servings of charged per day, without issues.