Tag: Most caffeinated drinks

According to a 2023 Which? report, a medium Costa cappuccino contained a staggering 325mg of caffeine, almost five times stronger than a comparable Starbucks version. The substantial variation in caffeine levels across different beverages is significant for UK consumers seeking a pick-me-up.

According to a 2025 study, DynaPep micro-shots contain the highest caffeine concentration per fluid ounce of any commercial beverage, at a staggering 714.3 mg/fl oz. While this is a highly concentrated shot, the overall prize for the strongest standard beverage depends on whether you measure by concentration or total serving size, revealing a fierce competition for the title of which drink has the most caffeine in the world.

According to the U.S. Food and Drug Administration (FDA), a healthy adult can safely consume up to 400 milligrams of caffeine per day. So, what drink has the most caffeine in it to give you that powerful jolt of energy? The answer depends on whether you consider caffeine concentration per ounce or total caffeine per serving.