A single Cirkul GoSip cartridge contains 390 mg of caffeine total. How much of that you actually drink per bottle depends on your bottle size and dial setting, which control how quickly you use up the cartridge.
Total Caffeine Per Cartridge
Each GoSip cartridge holds 390 mg of caffeine across its entire lifespan. The Frosted Coffee line contains the same amount. That’s roughly the equivalent of four standard 8-ounce cups of coffee packed into one small cartridge, but you won’t consume it all at once. A single cartridge is designed to flavor multiple bottles of water, so the caffeine gets spread across several refills over the course of a day or more.
Not all Cirkul cartridges contain caffeine. The GoSip and Frosted Coffee lines are the caffeinated options. Other lines like LifeSip (vitamins) and FitSip (electrolytes) don’t contain caffeine, so if your cartridge isn’t labeled as an energy or coffee flavor, it likely has none.
Caffeine Per Bottle by Size
The amount of caffeine you get per bottle depends on two things: the size of your Cirkul bottle and where you set the flavor dial. At a mid-range dial setting of 4, here’s how the math breaks down:
- 22-ounce bottle: About 65 mg per bottle (roughly 6 bottles per cartridge)
- 32-ounce bottle: About 97.5 mg per bottle (roughly 4 bottles per cartridge)
- 12-ounce bottle: About 35.5 mg per bottle (roughly 11 bottles per cartridge)
These numbers come directly from Cirkul’s own guidance, based on a dial setting of 4. A higher dial setting means stronger flavor and more caffeine per sip, which also means you’ll go through the cartridge faster and get fewer refills out of it. A lower setting stretches the cartridge further but delivers less caffeine per bottle.
How the Dial Changes Your Caffeine Intake
The dial on a Cirkul bottle controls how much liquid from the cartridge mixes into your water as you drink. Turning it up doesn’t just make the flavor stronger. It also increases the concentration of everything in the cartridge, including caffeine. At a setting of 1 or 2, you’re getting a light flavor and a relatively small dose of caffeine per sip. At 7 or 8, you’re pulling more from the cartridge with each sip, which means more caffeine per bottle but fewer total bottles before the cartridge runs out.
The total caffeine in the cartridge stays the same regardless of your dial setting. You’re just choosing whether to spread 390 mg across many lightly flavored bottles or fewer strongly flavored ones. Think of it like diluting juice concentrate: you get the same amount of juice either way, just at different strengths.
How Cirkul Compares to Other Drinks
A standard 8-ounce cup of coffee contains about 95 mg of caffeine. Using the 22-ounce Cirkul bottle at a dial setting of 4, you’d get about 65 mg per bottle, which is less than a cup of coffee. With the 32-ounce bottle at the same setting, you’d get roughly 97.5 mg, putting it right in line with a single cup of coffee.
For context, here’s how common drinks compare:
- 8 oz coffee: ~95 mg
- 32 oz fast-food sweet tea: ~100 mg
- 12 oz Mountain Dew: 54 mg
- 12 oz Coca-Cola: 34 mg
- 12 oz Pepsi: 39 mg
At moderate dial settings, a single Cirkul bottle delivers caffeine in the range of a soft drink to a cup of coffee, depending on your bottle size. But if you’re refilling and drinking multiple bottles from the same cartridge throughout the day, those doses add up. Finishing an entire GoSip cartridge in one day means consuming all 390 mg, which approaches the 400 mg daily limit that most health guidelines consider the upper end for healthy adults.
Tracking Your Actual Intake
The tricky part with Cirkul is that the caffeine delivery isn’t as straightforward as cracking open a can with a number on the label. Your actual intake depends on your bottle size, your dial setting, and how many refills you drink before the cartridge is empty. If you’re trying to keep tabs on your caffeine, the simplest approach is to count how many bottles you get from one cartridge and divide 390 by that number. That gives you a reasonable per-bottle estimate based on your personal usage pattern, which is more accurate than relying on a fixed number that assumes a specific dial setting you may not use.