McDonald's Sweet Tea (large) has more caffeine than Snapple iced tea on both counts: 100mg per 32 oz cup against 37mg per 16 oz bottle, and about 3mg per fluid ounce against 2. The serving sizes differ, so the table below shows both ways of counting.
McDonald's Sweet Tea (large) vs Snapple iced tea: the numbers
| McDonald's Sweet Tea (large) | Snapple iced tea | |
|---|---|---|
| Caffeine per serving | 100mg per 32 oz cup | 37mg per 16 oz bottle |
| Caffeine per fl oz | 3.1mg | 2.3mg |
| Servings to reach 400mg (FDA context) | 4.0 | 10.8 |
Sources: McDonald's Sweet Tea (large)'s figure is verified in our McDonald's Sweet Tea (large) caffeine guide against Caffeine Informer (source); Snapple iced tea's figure is verified in our Snapple iced tea guide against brand data / Caffeine Informer (source).
Which one should you pick?
Pick Snapple iced tea when you want the lighter dose or a slower ramp, and McDonald's Sweet Tea (large) 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
- McDonald's Sweet Tea (large): the full caffeine guide
- Snapple iced tea: the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
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Gear from this guide
FAQ
Does McDonald's Sweet Tea (large) or Snapple iced tea have more caffeine? McDonald's Sweet Tea (large): 100mg per 32 oz cup versus 37mg per 16 oz bottle for Snapple iced tea.
Which is stronger per ounce? McDonald's Sweet Tea (large), at about 3.1mg per fluid ounce versus 2.3mg for Snapple iced tea.
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