Prime Energy vs 5-hour Energy Extra Strength: which has more caffeine?

5-hour Energy Extra Strength has more caffeine than Prime Energy on both counts: 230mg per 1.93 oz shot against 200mg per 12 oz can, and about 119mg per fluid ounce against 17. The serving sizes differ, so the table below shows both ways of counting.

Prime Energy vs 5-hour Energy Extra Strength: the numbers

Sources: Prime Energy's figure is verified in our Prime Energy 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 7 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 Prime Energy when you want the lighter dose or a slower ramp, and 5-hour Energy Extra Strength 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

• Prime Energy: the full caffeine guide
• 5-hour Energy Extra Strength: the full caffeine guide
• The verified caffeine database
• Every drink compared: the comparisons index

FAQ

Does Prime Energy or 5-hour Energy Extra Strength have more caffeine? 5-hour Energy Extra Strength: 230mg per 1.93 oz shot versus 200mg per 12 oz can for Prime Energy.

Which is stronger per ounce? 5-hour Energy Extra Strength, at about 119.2mg per fluid ounce versus 16.7mg for Prime Energy.