Brew Dr Uplift kombucha vs Pure Leaf black iced tea: which has more caffeine?

Brew Dr Uplift kombucha has more caffeine than Pure Leaf black iced tea on both counts: 130mg per 14 oz bottle against 54mg per 18.5 oz bottle, and about 9mg per fluid ounce against 3. The serving sizes differ, so the table below shows both ways of counting.

Brew Dr Uplift kombucha vs Pure Leaf black iced tea: the numbers

Sources: Brew Dr Uplift kombucha's figure is verified in our Brew Dr Uplift kombucha caffeine guide against Caffeine Informer (source); Pure Leaf black iced tea's figure is verified in our Pure Leaf black iced tea guide against PepsiCo label data (source).

The concentration gap is the striking part: Brew Dr Uplift kombucha packs roughly 3 times the caffeine per ounce. Sipping speed matters at that density; a 14 oz bottle finished in minutes hits differently than the same milligrams spread over a slow cup.

Which one should you pick?

Pick Pure Leaf black iced tea when you want the lighter dose or a slower ramp, and Brew Dr Uplift kombucha 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

• Brew Dr Uplift kombucha: the full caffeine guide
• Pure Leaf black iced tea: the full caffeine guide
• The verified caffeine database
• Every drink compared: the comparisons index
• Compare any two of 120+ drinks

FAQ

Does Brew Dr Uplift kombucha or Pure Leaf black iced tea have more caffeine? Brew Dr Uplift kombucha: 130mg per 14 oz bottle versus 54mg per 18.5 oz bottle for Pure Leaf black iced tea.

Which is stronger per ounce? Brew Dr Uplift kombucha, at about 9.3mg per fluid ounce versus 2.9mg for Pure Leaf black iced tea.