How much caffeine is in Bloom Sparkling Energy?

A 12 fl oz can of Bloom Sparkling Energy has 180 mg of caffeine.

That's about 2 cups of brewed coffee, and 45% of the 400 mg a day the FDA cites for most healthy adults.

Source: bloomnu.com · checked 10 Nov 2026

When did you have it?

Had at 3 pm, about 63 mg is still in you at an 11 pm bedtime. That might affect your sleep.

Bedtime

Add this to my day

Your whole day, every drink, in the free CaffeineIQ check. The iPhone app is coming soon.

Latest time to drink it

For an 11 pm bedtime, most people should finish a 12 fl oz can of Bloom Sparkling Energy by about 1:15 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	6:15 am	11:15 am	4:15 pm
10 pm	7:15 am	12:15 pm	5:15 pm
11 pm	8:15 am	1:15 pm	6:15 pm
Midnight	9:15 am	2:15 pm	7:15 pm
1 am	10:15 am	3:15 pm	8:15 pm

For a 12 fl oz can of Bloom Sparkling 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 can of Bloom Sparkling Energy peaks in your blood about 75 minutes after you start it, at roughly 154 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	126 mg	83 mg	55 mg	36 mg

So one had at 3 pm leaves about 63 mg at 11 pm. How long caffeine lasts explains the curve.

How it compares

Bloom Sparkling Energy is stronger than 48% of the 41 energy drinks we track, by caffeine per serving.

Per fluid ounce (15 mg) it is stronger than 68% of them.

To reach 400 mg in a day you would need about 2 of these.

Less caffeine

Full Throttle 161 mg, 16 fl oz can
Rockstar Energy 161 mg, 16 fl oz can
IRN-BRU Energy 160 mg, 500 ml can

More caffeine

Java Monster Mean Bean 188 to 200 mg, 15 fl oz can
3D Energy 200 mg, 16 fl oz can
5-hour Energy 200 mg, 1 shot

FAQ

Is Bloom Sparkling Energy high in caffeine?

Yes. A 12 fl oz can of Bloom Sparkling Energy has 180 mg, which is 1.9 times an 8 fl oz cup of brewed coffee (95 mg).

Can I drink Bloom Sparkling Energy at night?

Not if you want to sleep well. Had at 7 pm, it leaves about 110 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 1:15 pm.

How long does the caffeine in Bloom Sparkling Energy last?

It peaks about 75 minutes after you start it. Of the 180 mg, about 83 mg is still in you 6 hours later and 36 mg after 12 hours, for an average adult with a 5-hour half-life.

Does Bloom Sparkling Energy have more caffeine than a cup of coffee?

Yes. A 12 fl oz can of Bloom Sparkling Energy has 180 mg; an 8 fl oz cup of coffee has 95 mg.

Method and limits

The caffeine figure comes from bloomnu.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.