Reign Total Body Fuel vs 5-hour Energy Extra Strength: which has more caffeine?

Reign Total Body Fuel carries more total caffeine per serving (300mg per 16 oz can vs 230mg per 1.93 oz shot), but ounce for ounce 5-hour Energy Extra Strength is actually the stronger drink at about 119mg per fluid ounce against 19. Which one "has more caffeine" depends on whether you measure the container or the concentration.

Reign Total Body Fuel vs 5-hour Energy Extra Strength: the numbers

Sources: Reign Total Body Fuel's figure is verified in our Reign Total Body Fuel caffeine guide against Caffeine Informer (source); 5-hour Energy Extra Strength's figure is verified in our 5-hour Energy Extra Strength guide against 5-hour Energy facts page (source).

The concentration gap is the striking part: 5-hour Energy Extra Strength packs roughly 6 times the caffeine per ounce. Sipping speed matters at that density; a 1.93 oz shot finished in minutes hits differently than the same milligrams spread over a slow cup.

Which one should you pick?

Pick 5-hour Energy Extra Strength when you want the lighter dose or a slower ramp, and Reign Total Body Fuel when you actually need the bigger hit and know your tolerance. If you are stacking either with other caffeinated drinks through the day, run the math against the 400mg reference rather than guessing.

For context, the FDA cites 400mg of caffeine a day as an amount generally not associated with negative effects in healthy adults. Tolerance and health vary, so treat these numbers as information, not advice.

Related reading

• Reign Total Body Fuel: the full caffeine guide
• 5-hour Energy Extra Strength: the full caffeine guide
• The verified caffeine database

FAQ

Does Reign Total Body Fuel or 5-hour Energy Extra Strength have more caffeine? Reign Total Body Fuel: 300mg per 16 oz can versus 230mg per 1.93 oz shot for 5-hour Energy Extra Strength.

Which is stronger per ounce? 5-hour Energy Extra Strength, at about 119.2mg per fluid ounce versus 18.8mg for Reign Total Body Fuel.