Coffee & Espresso · Drink database
Caffeine in Starbucks Starbucks Doubleshot Energy
225 mg
per 15 oz can Very high
≈ 15.0 mg per fl oz
The ceiling is in sight. The ceiling is not a challenge.
Every serving size
| Serving | Caffeine | % of 400 mg day | Finish by (10:30 PM bed) |
|---|---|---|---|
| 15 oz can (15 oz) | 225 mg | 56% | 11:39 AM |
Cutoff column: average metabolism (5 h half-life), ~50 mg bedtime threshold — run it with your bedtime →
How it compares
Starbucks Starbucks Doubleshot Energy 225 mg
Green tea (8 oz) 28 mg
Black tea (8 oz) 47 mg
Brewed coffee (8 oz) 96 mg
Monster (16 oz) 160 mg
Bang (16 oz) 300 mg
Over half the FDA daily limit in one serving. The tracker will flag stacking a second one — and the cutoff calculator will push this earlier than you expect. At 225 mg per 15 oz can, this drink is 56% of the FDA's 400 mg daily ceiling for healthy adults.
Source: Manufacturer label · confidence: high
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Related reading: coffee vs tea vs energy drinks · when to stop before bed