Coffee
Caffeine in Costa Coffee Flat White / Latte (Medium)
185mg
per 12 oz
≈ 2 coffees≈ 2 Red Bulls46% of FDA daily max
Is that a lot?
Costa Coffee Flat White / Latte (Medium) is 46% of the FDA’s recommended daily maximum, in a single 12 oz.
Green tea
Espresso
Red Bull
Coffee
Costa Coffee Flat White / Latte (Medium)
FDA daily max · 400mg
Before bed
When can I drink Costa Coffee Flat White / Latte (Medium) and still sleep?
Your Costa Coffee Flat White / Latte (Medium) cutoff
You drink it at
Bedtime
Costa Coffee Flat White / Latte (Medium) · 185 mg · assuming an average ~5 h half-life
At bedtime
61 mg
may delay sleep
Latest safe Costa Coffee Flat White / Latte (Medium): 1:34 PM
How much caffeine is in Costa Coffee Flat White / Latte (Medium)?
A medium Costa flat white or latte carries about 185 mg of caffeine, since Costa builds its drinks on high-caffeine doppio and triple shots. That makes a 'milky coffee' here surprisingly potent, with the range running even higher.
| Serving | Caffeine | Sugar |
|---|---|---|
| 12 oz | 185 mg | 8 g |
Costa uses high-caffeine doppio/triple shots; medium varies ~157–277 mg.
Will Costa Coffee Flat White / Latte (Medium) affect your sleep?
At 185 mg, a medium Costa needs roughly nine to ten hours to fall under 50 mg, so a lunchtime cup can still be active at bedtime. Costa's strong shots make an afternoon coffee here a real sleep consideration.
Heads up
At 185 mg, a second Costa Coffee Flat White / Latte (Medium) in a day pushes you toward the FDA’s 400 mg ceiling — and that’s before any coffee or tea. Log everything in the calculator to see your real daily total.
Source: Costa official (range)