Zoa Caffeine Content: 160 mg or 210 mg by Can Size
Zoa Energy contains 160 mg of caffeine per 12 oz can and 210 mg per 16 oz can, per Zoa's FAQ. Both sizes run about 13 mg per fluid ounce, sourced from green coffee and green tea. One 12 oz can is 40% of the FDA's 400 mg daily figure; a 16 oz can is 52.5%.
Zoa Caffeine by Can Size
| Zoa Energy can | Caffeine | mg per fl oz | Share of FDA's 400 mg | On zoaenergy.com, Oct 31 |
|---|---|---|---|---|
| 12 fl oz | 160 mg | 13.33 | 40% | In stock (12-pack $24.99) |
| 16 fl oz | 210 mg | 13.13 | 52.5% | Sold out on brand site |
| Roon pouch (our product, not a drink) | 80 mg | n/a | 20% | n/a |
Source: zoaenergy.com FAQ and product pages, checked Oct 31, 2026. mg per fl oz and share of 400 mg computed.
How we compared
Caffeine figures come from Zoa's FAQ, Zoa's product pages, and a Lowes Foods grocery listing. Per-ounce and share-of-400 mg columns were computed from those numbers. No can went through a lab assay for this page. Roon, which publishes it, sells a caffeine pouch and links to it lower down; every Zoa number traces to a brand or grocery page linked here.
Why Some Sites Say 160 mg for a 16 oz Zoa
Older pages, including Caffeine Informer and Kill Cliff's blog, list 160 mg per 16 fl oz. Zoa's current FAQ says 160 mg for 12 oz and 210 mg for 16 oz. A Lowes Foods listing for the 12 oz Tropical Punch confirms "160 mg caffeine from green coffee & green tea per 12 fl oz serving." When a page and the FAQ disagree, go by the label on your can and Zoa's current FAQ.
Which Zoa Sizes and Flavors Are on Sale Now?
As of Oct 31, 2026, zoaenergy.com sells 12 oz 12-packs at $24.99 (about $2.08 per can). In stock: Lemon Lime, Mango Splash, Green Apple, Frosted Grape, White Peach, and two variety packs. Cherry Limeade, Strawberry Watermelon, Pineapple Coconut, Wild Orange, and Tropical Punch 12 oz are sold out.
Every 16 oz listing ($29.99 per 12-pack) is sold out on the brand site. Stock shifts; grocery stores or Amazon may differ. A ZOA+ Orange Grapefruit pre-workout drink is also listed, sold out; it is a separate line, so its caffeine is left out of this table.
Is Zoa Sugar Free, and What Sweetens It?
Yes. Per Zoa's FAQ, all Zoa Energy drinks are sugar free, sweetened with sucralose and acesulfame potassium. The cans also contain electrolytes (magnesium, potassium, sodium), B vitamins, and vitamin C (90 mg per 12 oz, 120 mg per 16 oz).
Who Should Skip Zoa
Zoa's FAQ: "ZOA is not recommended for children, people sensitive to caffeine, or people who are pregnant or nursing." The FDA cites 400 mg per day as the amount not generally linked to negative effects in healthy adults. Two 16 oz cans total 420 mg, past that line. If you are pregnant, breastfeeding, or taking medication that interacts with caffeine, talk to your provider first. More context: how much caffeine is too much and our healthiest energy drinks ranking.
Related from Roon
- Which energy drink has the most caffeine?
- How much caffeine is in Celsius?
- How much caffeine is in Reign?
Frequently Asked Questions
Is Zoa stronger than Celsius?
Zoa's 12 oz can has 160 mg; its 16 oz can has 210 mg. See our Celsius caffeine breakdown for the comparison. Per-ounce concentration and total volume both matter, so the answer depends on which can sizes you are comparing.
Where does Zoa's caffeine come from?
Green coffee beans and green tea leaves, per the brand's FAQ. The molecule is chemically identical to the caffeine in brewed coffee; the plant source does not change how your body metabolizes it.
How many Zoa cans can I drink a day?
Zoa publishes no daily limit but recommends moderation. One 16 oz can is 210 mg, already 52.5% of the FDA's 400 mg guideline. Two 16 oz cans hit 420 mg before any coffee or tea, which exceeds that figure.
Caffeine in 80 mg Steps
Zoa gives you 160 mg or 210 mg per can. Roon works in 80 mg increments: each pouch delivers 80 mg caffeine with 60 mg L-theanine, 25 mg methylliberine (Dynamine), and 5 mg theacrine (TeaCrine). Use one pouch or two, add another later if needed, up to four a day (320 mg total).
Duration comes from the methylliberine. In a randomized, double-blind crossover study of 12 adults, taking methylliberine with caffeine stretched caffeine's half-life from 7.2 to 15 hours and cut its oral clearance from 41.9 to 17.1 L/hr, with no higher peak (study). That trial used 100 mg methylliberine plus 150 mg caffeine, roughly 4x and 1.9x what one Roon pouch holds, so a pouch follows the same mechanism in direction, not the study's exact numbers. A 15 hour half-life is not 15 hours of felt energy: most people notice a pouch for about 6 to 8 hours, with no jitters and no crash. Take your last one at least 8 hours before bed.
Roon is zero sugar, like Zoa (both use sucralose). It is a pouch placed under the lip, onset in 5 to 10 minutes. Pricing runs from $9.16 per tin on a 12-tin subscription, as little as $0.61 per pouch.
Sources
- Zoa Energy FAQ
- Zoa Lemon Lime 12 oz product page
- Lowes Foods: Zoa Tropical Punch 12 oz listing
- Caffeine and Methylliberine: A Human Pharmacokinetic Interaction Study
- FDA: Spilling the Beans: How Much Caffeine Is Too Much?
Written by Roon Team
