Chameleon Cold Brew (RTD) carries more total caffeine per serving (230mg per 10 oz bottle vs 63mg per 1 oz shot), but ounce for ounce espresso is actually the stronger drink at about 63mg per fluid ounce against 23. Which one "has more caffeine" depends on whether you measure the container or the concentration.
Chameleon Cold Brew (RTD) vs espresso: the numbers
| Chameleon Cold Brew (RTD) | espresso | |
|---|---|---|
| Caffeine per serving | 230mg per 10 oz bottle | 63mg per 1 oz shot |
| Caffeine per fl oz | 23.0mg | 63.0mg |
| Servings to reach 400mg (FDA context) | 1.7 | 6.3 |
Sources: Chameleon Cold Brew (RTD)'s figure is verified in our Chameleon Cold Brew (RTD) caffeine guide against Caffeine Informer (source); espresso's figure is verified in our espresso guide against USDA FoodData Central (source).
Which one should you pick?
Pick espresso when you want the lighter dose or a slower ramp, and Chameleon Cold Brew (RTD) 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
- Chameleon Cold Brew (RTD): the full caffeine guide
- espresso: the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
FAQ
Does Chameleon Cold Brew (RTD) or espresso have more caffeine? Chameleon Cold Brew (RTD): 230mg per 10 oz bottle versus 63mg per 1 oz shot for espresso.
Which is stronger per ounce? espresso, at about 63.0mg per fluid ounce versus 23.0mg for Chameleon Cold Brew (RTD).
Comparing caffeine? The caffeine comparison tool puts hundreds of drinks side by side, and the caffeine curfew calculator can check your cutoff time for tonight.