Yes, Big Red has caffeine. A 12 fl oz can of regular Big Red carries 34mg of caffeine, which works out to about 2.83mg per fl oz. That number is listed on Keurig Dr Pepper's own Big Red product facts page and cross-checks against Caffeine Informer.
So the bright red cream soda that tastes like bubble gum and vanilla is not caffeine free, but it is not a big hitter either. Here is where it actually lands.
Is 34mg a lot for a soda?
No. Among caffeinated sodas, Big Red sits on the low end. For a quick gut check, 34mg is the same amount you get in a 12 oz can of regular Coca-Cola, and it is meaningfully less than a Dr Pepper. It is a fraction of what an 8 oz cup of drip coffee gives you, which typically runs somewhere near 95mg depending on the roast and how it was brewed.
A lot of people assume anything this loud and red must be loaded with stimulants. It is not. What Big Red does load up on is sugar. A 12 oz can carries 38 grams of sugar and 150 calories, per Caffeine Informer's breakdown. So the buzz you feel from a cold Big Red is mostly the sugar rush doing the talking, not the caffeine.
Big Red caffeine compared to other sodas
Here is how a 12 fl oz Big Red stacks up against a few common points of reference. Every number below is per 12 fl oz unless noted.
| Drink | Serving | Caffeine |
|---|---|---|
| Big Red | 12 fl oz | 34mg |
| Big Red | per fl oz | 2.83mg |
| Coca-Cola Classic | 12 fl oz | 34mg |
| Dr Pepper | 12 fl oz | 41mg |
Sources: Keurig Dr Pepper product facts for Big Red and Dr Pepper, and Caffeine Informer for the per fl oz math. The Coca-Cola figure comes straight from Coca-Cola's US product pages.
The takeaway from the table: Big Red is a low-caffeine soda. If you scale that 2.83mg per fl oz up to a 16 oz bottle, you are still only looking at roughly 45mg, which is around half a cup of coffee. A 20 oz bottle lands near 57mg by the same math. Those larger numbers are the per-ounce rate applied to the bigger pour, not separate label figures, so treat them as close estimates.
For context, the FDA cites 400mg of caffeine a day as an amount generally not associated with negative effects in healthy adults. How caffeine affects you depends on your own tolerance and health, so treat these numbers as information, not advice.
Practical version: you would need to drink about 11 cans of Big Red in a day to reach that 400mg line on caffeine alone. You would hit a wall on the sugar long before your body noticed the caffeine.
What about Big Red Zero Sugar and the diet version?
Big Red Zero Sugar exists and has its own Keurig Dr Pepper product facts page. The zero sugar formula drops the calories and sugar down to nothing while keeping the same red cream soda flavor. Caffeine on the diet and zero sugar lines tends to run in the same ballpark as the regular can rather than jumping way up, but if the exact figure matters to you, check the can in your hand. Formulas and label numbers get revised, and the printed Nutrition Facts panel is always the final word over any third-party chart.
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Related caffeine numbers
- Dr Pepper caffeine, which comes in higher at 41mg per 12 oz.
- Coca-Cola caffeine, the can that ties Big Red at 34mg.
- Our full caffeine database for every drink we have measured.
FAQ
Does Big Red have caffeine? Yes. A 12 fl oz can of regular Big Red has 34mg of caffeine, per Keurig Dr Pepper's product facts and Caffeine Informer.
Is Big Red high in caffeine? No. At 34mg per 12 oz it is a low-caffeine soda, the same as a can of Coca-Cola and well under a cup of coffee.
How much sugar is in Big Red? A 12 oz can has 38 grams of sugar and 150 calories, so the rush you feel is mostly sugar, not caffeine.