Bai Antioxidant Infusion vs Starbucks Refreshers: which has more caffeine?

Bai Antioxidant Infusion has more caffeine than Starbucks Refreshers on both counts: 55mg per 18 oz bottle against 45mg per 16 oz grande, and about 3mg per fluid ounce against 3. The serving sizes differ, so the table below shows both ways of counting.

These are different categories of drink, which changes how the caffeine arrives. Energy drinks and sodas list an exact number because caffeine is a measured additive; brewed drinks vary with the beans and the brew, so their figures are compiled averages. The numbers here are the standard published values for each.

Bai Antioxidant Infusion vs Starbucks Refreshers: the numbers

Sources: Bai Antioxidant Infusion's figure is verified in our Bai Antioxidant Infusion caffeine guide against Caffeine Informer (source); Starbucks Refreshers's figure is verified in our Starbucks Refreshers guide against Starbucks nutrition listing (source).

Which one should you pick?

Pick Starbucks Refreshers 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
• Starbucks Refreshers: 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 Starbucks Refreshers have more caffeine? Bai Antioxidant Infusion: 55mg per 18 oz bottle versus 45mg per 16 oz grande for Starbucks Refreshers.

Which is stronger per ounce? Bai Antioxidant Infusion, at about 3.1mg per fluid ounce versus 2.8mg for Starbucks Refreshers.