Bai Antioxidant Infusion carries more total caffeine per serving (55mg per 18 oz bottle vs 46mg per 12 oz can), but ounce for ounce Diet Coke is actually the stronger drink at about 4mg per fluid ounce against 3. Which one "has more caffeine" depends on whether you measure the container or the concentration.
Bai Antioxidant Infusion vs Diet Coke: the numbers
| Bai Antioxidant Infusion | Diet Coke | |
|---|---|---|
| Caffeine per serving | 55mg per 18 oz bottle | 46mg per 12 oz can |
| Caffeine per fl oz | 3.1mg | 3.8mg |
| Servings to reach 400mg (FDA context) | 7.3 | 8.7 |
Sources: Bai Antioxidant Infusion's figure is verified in our Bai Antioxidant Infusion caffeine guide against Caffeine Informer (source); Diet Coke's figure is verified in our Diet Coke guide against Caffeine Informer (source).
Which one should you pick?
Pick Diet Coke when you want the lighter dose or a slower ramp, and Bai Antioxidant Infusion 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
- Bai Antioxidant Infusion: the full caffeine guide
- Diet Coke: the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
FAQ
Does Bai Antioxidant Infusion or Diet Coke have more caffeine? Bai Antioxidant Infusion: 55mg per 18 oz bottle versus 46mg per 12 oz can for Diet Coke.
Which is stronger per ounce? Diet Coke, at about 3.8mg per fluid ounce versus 3.1mg for Bai Antioxidant Infusion.
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