Caffeine & Sleep
Soda

Caffeine in Surge

51mg
per 12 oz
≈ 1 coffee≈ 1 Red Bull13% of FDA daily max

Is that a lot?

Surge is 13% of the FDA’s recommended daily maximum, in a single 12 oz.

Green tea
28 mg
Surge
51 mg
Espresso
63 mg
Red Bull
80 mg
Coffee
95 mg
FDA daily max · 400mg
Before bed

When can I drink Surge and still sleep?

Your Surge cutoff
You drink it at
Bedtime
Surge · 51 mg · assuming an average ~5 h half-life
At bedtime
17 mg
close to optimal
Latest safe Surge: 10:51 PM

How much caffeine is in Surge?

Surge is a citrus soda revived by Coca-Cola, carrying about 51 mg of caffeine per 12 oz can, on par with Mountain Dew. It comes loaded with a sweet 50 grams of sugar for that throwback energy hit.

ServingCaffeineSugar
12 oz51 mg50 g

Citrus soda revived by Coca-Cola.

Will Surge affect your sleep?

At 51 mg, Surge sits just over the 50 mg threshold and dips below within an hour. An afternoon can is usually clear by bedtime, though the heavy sugar can add its own late-day buzz.

Source: Manufacturer label

Related drinks

Surge & sleep — FAQ

At 51 mg it's among the stronger sodas, starting just above the 50 mg threshold, so a late Surge plus its sugar could make falling asleep a little harder.

Surge has 51 mg per 12 oz — about 13% of the FDA’s 400 mg daily maximum for healthy adults. That’s roughly 1 cup of coffee.

It depends on your bedtime and how fast you clear caffeine. Use the calculator above to see when Surge drops below the ~50 mg “ok to sleep” threshold for your bedtime.

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