How much caffeine is in OWYN Cold Brew Protein Shake?
A 12 fl oz bottle of OWYN Cold Brew Protein Shake has 148 mg of caffeine.
That's about one and a half cups of brewed coffee, and 37% of the 400 mg a day the FDA cites for most healthy adults.
Source: liveowyn.com · checked 10 Nov 2026
When did you have it?
Had at 3 pm, about 52 mg is still in you at an 11 pm bedtime. That might affect your sleep.
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 bottle of OWYN Cold Brew Protein Shake by about 2:40 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 | 7:40 am | 12:40 pm | 5:40 pm |
| 10 pm | 8:40 am | 1:40 pm | 6:40 pm |
| 11 pm | 9:40 am | 2:40 pm | 7:40 pm |
| Midnight | 10:40 am | 3:40 pm | 8:40 pm |
| 1 am | 11:40 am | 4:40 pm | 9:40 pm |
For a 12 fl oz bottle of OWYN Cold Brew Protein Shake, 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 OWYN Cold Brew Protein Shake peaks in your blood about 75 minutes after you start it, at roughly 126 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 | 104 mg | 69 mg | 45 mg | 30 mg |
So one had at 3 pm leaves about 52 mg at 11 pm. How long caffeine lasts explains the curve.
How it compares
OWYN Cold Brew Protein Shake is stronger than 29% of the 8 bottled and canned coffees we track, by caffeine per serving.
Per fluid ounce (12 mg) it is stronger than 25% of them.
To reach 400 mg in a day you would need about 2½ of these.
Less caffeine
- McCafé Frappé Mocha (bottled) 107 mg, 13.7 fl oz bottle
- Super Coffee 80 mg, 1 bottle, Protein+
More caffeine
- Super Coffee Espresso 150 mg, 1 can, Espresso
- Wandering Bear Cold Brew 150 to 160 mg, 6 fl oz serving
- RISE Nitro Cold Brew 180 mg, 7 fl oz can
FAQ
Is OWYN Cold Brew Protein Shake high in caffeine?
Yes. A 12 fl oz bottle of OWYN Cold Brew Protein Shake has 148 mg, which is 1.6 times an 8 fl oz cup of brewed coffee (95 mg).
Can I drink OWYN Cold Brew Protein Shake at night?
Not if you want to sleep well. Had at 7 pm, it leaves about 91 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 2:40 pm.
How long does the caffeine in OWYN Cold Brew Protein Shake last?
It peaks about 75 minutes after you start it. Of the 148 mg, about 69 mg is still in you 6 hours later and 30 mg after 12 hours, for an average adult with a 5-hour half-life.
Does OWYN Cold Brew Protein Shake have more caffeine than Red Bull?
Yes. A 12 fl oz bottle of OWYN Cold Brew Protein Shake has 148 mg; an 8.4 fl oz can of Red Bull has 80 mg.
Method and limits
The caffeine figure comes from liveowyn.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.