Soda
Caffeine in Coca-Cola Classic
34mg
per 12 oz
9% of FDA daily max
Is that a lot?
Coca-Cola Classic is 9% of the FDA’s recommended daily maximum, in a single 12 oz.
Green tea
Coca-Cola Classic
Espresso
Red Bull
Coffee
FDA daily max · 400mg
Before bed
When can I drink Coca-Cola Classic and still sleep?
Your Coca-Cola Classic cutoff
You drink it at
Bedtime
Coca-Cola Classic · 34 mg · assuming an average ~5 h half-life
At bedtime
11 mg
close to optimal
Latest safe Coca-Cola Classic: 11:00 PM
How much caffeine is in Coca-Cola Classic?
A 12 oz can of Coca-Cola Classic holds about 34 mg of caffeine, a third of what's in a cup of coffee. The real headline is the 39 grams of sugar that come with that gentle fizz of stimulation.
| Serving | Caffeine | Sugar |
|---|---|---|
| 12 oz | 34 mg | 39 g |
Per 12 oz can.
Will Coca-Cola Classic affect your sleep?
At 34 mg, a Coke already starts below the 50 mg sleep-threshold and clears within a couple of hours. The caffeine rarely troubles sleep, though a sugary soda close to bed can still leave you restless.
Source: Manufacturer label