How much caffeine is in Starbucks Energy Refreshers?
A Grande (16 fl oz) Starbucks Energy Refreshers has 125 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: starbucks.com · checked 10 Nov 2026
The energy versions of Mango Strawberry, Mango Dream, Apple Pomegranate, Snowy Apple, Cannon Ball and Pink Cannon Ball all list the same caffeine per size.
When did you have it?
Had at 3 pm, about 44 mg is still in you at an 11 pm bedtime. That should not affect most people’s sleep.
Your whole day, every drink, in the free CaffeineIQ check. The iPhone app is coming soon.
Sizes
| Size | Volume | Caffeine | mg per fl oz |
|---|---|---|---|
| Tall | 12 fl oz (355 ml) | 100 mg | 8.3 |
| Grande shown above | 16 fl oz (473 ml) | 125 mg | 7.8 |
| Venti | 24 fl oz (710 ml) | 150 mg | 6.3 |
| Trenta | 30 fl oz (887 ml) | 175 mg | 5.8 |
Source: starbucks.com · checked 10 Nov 2026
Latest time to drink it
For an 11 pm bedtime, most people should finish a Grande (16 fl oz) Starbucks Energy Refreshers by about 3:55 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 | 8:55 am | 1:55 pm | 6:55 pm |
| 10 pm | 9:55 am | 2:55 pm | 7:55 pm |
| 11 pm | 10:55 am | 3:55 pm | 8:55 pm |
| Midnight | 11:55 am | 4:55 pm | 9:55 pm |
| 1 am | 12:55 pm | 5:55 pm | 10:55 pm |
For a Grande (16 fl oz) Starbucks Energy Refreshers, 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 Grande (16 fl oz) Starbucks Energy Refreshers peaks in your blood about 75 minutes after you start it, at roughly 107 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 | 88 mg | 58 mg | 38 mg | 25 mg |
So one had at 3 pm leaves about 44 mg at 11 pm. How long caffeine lasts explains the curve.
How it compares
Starbucks Energy Refreshers is stronger than 39% of the 90 coffee-shop drinks we track, by caffeine per serving.
Per fluid ounce (7.8 mg) it is stronger than 39% of them.
To reach 400 mg in a day you would need about 3 of these.
Less caffeine
- Starbucks Tiramisu Velvet Latte 115 mg, Grande
- Starbucks Peppermint Mocha Frappuccino 110 mg, Grande
- Starbucks Mocha Frappuccino 100 mg, Grande
More caffeine
- Starbucks Caffè Latte 150 mg, Grande
- Starbucks Caffè Misto 150 mg, Grande
- Starbucks Cappuccino 150 mg, Grande
Same caffeine: Starbucks Dragon Energy Drink, Starbucks Mango Dragonfruit Energy Refresher, Starbucks Pink Energy Drink.
FAQ
Is Starbucks Energy Refreshers high in caffeine?
Yes. A Grande (16 fl oz) Starbucks Energy Refreshers has 125 mg, which is 1.3 times an 8 fl oz cup of brewed coffee (95 mg).
How much caffeine is in a Tall Starbucks Energy Refreshers?
A Tall (12 fl oz) Starbucks Energy Refreshers has 100 mg of caffeine, 25 mg less than a Grande (16 fl oz) Starbucks Energy Refreshers.
How much caffeine is in a Trenta Starbucks Energy Refreshers?
A Trenta (30 fl oz) Starbucks Energy Refreshers has 175 mg of caffeine, 50 mg more than a Grande (16 fl oz) Starbucks Energy Refreshers.
Can I drink Starbucks Energy Refreshers at night?
Not if you want to sleep well. Had at 7 pm, it leaves about 76 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 3:55 pm.
How long does the caffeine in Starbucks Energy Refreshers last?
It peaks about 75 minutes after you start it. Of the 125 mg, about 58 mg is still in you 6 hours later and 25 mg after 12 hours, for an average adult with a 5-hour half-life.
Does Starbucks Energy Refreshers have more caffeine than Red Bull?
Yes. A Grande (16 fl oz) Starbucks Energy Refreshers has 125 mg; an 8.4 fl oz can of Red Bull has 80 mg.
Method and limits
The caffeine figure comes from starbucks.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.
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