How much caffeine is in Uptime Energy?

A 12 fl oz bottle of Uptime Energy has 142 mg of caffeine.

That's about one and a half cups of brewed coffee, and a third of the 400 mg a day the FDA cites for most healthy adults.

Source: uptimeenergy.com · checked 10 Nov 2026

When did you have it?

Had at 3 pm, about 50 mg is still in you at an 11 pm bedtime. That should not affect most people’s sleep.

Bedtime

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Latest time to drink it

For an 11 pm bedtime, most people should finish a 12 fl oz bottle of Uptime Energy by about 3 pm. The table works it out for other bedtimes and for how sensitive you are: it is the latest time to start one so that the caffeine left stays under the line all night.

Bedtime	Very sensitive under 25 mg	Average under 50 mg	Not very sensitive under 100 mg
9 pm	8 am	1 pm	6 pm
10 pm	9 am	2 pm	7 pm
11 pm	10 am	3 pm	8 pm
Midnight	11 am	4 pm	9 pm
1 am	noon	5 pm	10 pm

For a 12 fl oz bottle of Uptime Energy, average clearance (half-life 5 h), 8 hours of sleep. "Any time" means even one at bedtime stays under the line.

How long it lasts

The caffeine from a 12 fl oz bottle of Uptime Energy peaks in your blood about 75 minutes after you start it, at roughly 121 mg. Half of it is gone in about 5 hours for an average adult; that ranges from roughly 3 to 7 hours, and longer in pregnancy or with some medicines.

Time after	3 hours	6 hours	9 hours	12 hours
Still in you	100 mg	66 mg	43 mg	29 mg

So one had at 3 pm leaves about 50 mg at 11 pm. How long caffeine lasts explains the curve.

How it compares

Uptime Energy is stronger than 18% of the 41 energy drinks we track, by caffeine per serving.

Per fluid ounce (12 mg) it is stronger than 46% of them.

To reach 400 mg in a day you would need about 3 of these.

Less caffeine

Clean Cause Yerba Mate 120 mg, 12 fl oz can
Dutch Bros Rebel Energy Drink 115 mg, Medium iced
Red Bull 80 mg, 8.4 fl oz can

More caffeine

Monster Zero Ultra 150 mg, 16 fl oz can
Yerba Madre Yerba Mate 150 mg, 15.5 fl oz can
IRN-BRU Energy 160 mg, 500 ml can

FAQ

Is Uptime Energy high in caffeine?

Yes. A 12 fl oz bottle of Uptime Energy has 142 mg, which is 1.5 times an 8 fl oz cup of brewed coffee (95 mg).

Can I drink Uptime Energy at night?

Not if you want to sleep well. Had at 7 pm, it leaves about 87 mg in an average adult at an 11 pm bedtime, above the 50 mg most people sleep fine with. The latest time for an 11 pm bedtime is about 3 pm.

How long does the caffeine in Uptime Energy last?

It peaks about 75 minutes after you start it. Of the 142 mg, about 66 mg is still in you 6 hours later and 29 mg after 12 hours, for an average adult with a 5-hour half-life.

Does Uptime Energy have more caffeine than a cup of coffee?

Yes. A 12 fl oz bottle of Uptime Energy has 142 mg; an 8 fl oz cup of coffee has 95 mg.

Method and limits

The caffeine figure comes from uptimeenergy.com; recipes, brewing and batches vary, so a real serving can differ. The curves use a standard one-compartment model with an average 5-hour half-life and a sleep-friendly line of 50 mg; your own body may clear caffeine faster or slower. How it works has the details.

These are estimates for information, not medical advice.