OLIPOP Vintage Cola has the most caffeine of the three at 50mg per 12 oz can, Poppi Classic Cola sits in the middle at 40mg, and Coca-Cola Classic has the least at 34mg. The servings are identical, so the per-can numbers settle it outright: a 16mg spread from top to bottom.
OLIPOP Vintage Cola vs Poppi Classic Cola vs Coca-Cola Classic: the numbers
| OLIPOP Vintage Cola | Poppi Classic Cola | Coca-Cola Classic | |
|---|---|---|---|
| Caffeine per serving | 50mg per 12 oz can | 40mg per 12 oz can | 34mg per 12 oz can |
| Caffeine per fl oz | 4.2mg | 3.3mg | 2.8mg |
| Servings to reach 400mg (FDA context) | 8.0 | 10.0 | 11.8 |
Sources: OLIPOP Vintage Cola is 50mg per 12 oz can per Caffeine Informer (source), and the figure is carried in our OLIPOP Vintage Cola guide; Poppi Classic Cola is 40mg per 12 oz can per Caffeine Informer (source), and the figure is carried in our Poppi Classic Cola guide; Coca-Cola Classic is 34mg per 12 oz can per Caffeine Informer (source), and the figure is carried in our Coca-Cola Classic guide.
What a 16mg spread actually feels like
All three come in the same 12 oz can, so the gap is the whole difference. 16mg is less than half a cup of brewed coffee, which is the easiest way to size it if you already know your coffee tolerance. Switching from Coca-Cola Classic to OLIPOP Vintage Cola once a day changes your weekly intake by about 112mg.
The three head-to-head pages
Each pairing has its own page with the full math:
- OLIPOP Vintage Cola vs Poppi Classic Cola, head to head
- OLIPOP Vintage Cola vs Coca-Cola Classic, head to head
- Poppi Classic Cola vs Coca-Cola Classic, head to head
Which one should you pick?
Take Coca-Cola Classic when you want the smallest dose of the three, Poppi Classic Cola when you want a middle number without thinking about it, and OLIPOP Vintage Cola when you actually want the 50mg and know how you handle it. If you drink more than one caffeinated thing a day, the useful move is adding the day up against the 400mg reference rather than judging each drink alone.
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
- 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
Which has the most caffeine, OLIPOP Vintage Cola, Poppi Classic Cola or Coca-Cola Classic? OLIPOP Vintage Cola, at 50mg per 12 oz can. Poppi Classic Cola has 40mg per 12 oz can and Coca-Cola Classic has 34mg per 12 oz can.
Which of the three is strongest per ounce? OLIPOP Vintage Cola, at about 4.2mg per fluid ounce, ahead of Poppi Classic Cola at 3.3mg and Coca-Cola Classic at 2.8mg.
How many OLIPOP Vintage Cola servings reach the FDA 400mg reference? About 8.0 of them, at 12 oz can each. The FDA cites 400mg a day as an amount generally not associated with negative effects in healthy adults. This is information, not advice.
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