# Strongest coffee you can buy: highest-caffeine brands, mg per cup Devil Mountain's Black Label has the highest caffeine figure we found for a coffee sold in the US: 1,555 mg per 12 fl oz brewed, as listed by Caffeine Informer. Black Insomnia (1,105 mg) and Death Wish (728 mg) follow. A tall Starbucks Dark Roast has 195 mg, per Consumer Reports. **1,555 mg** Black Label, per 12 oz **400 mg** FDA daily figure for most adults **195 mg** a tall Starbucks Dark Roast **6** coffees listed One 12 oz cup of Black Label is almost four times the 400 mg a day the FDA cites as not generally linked to negative effects for most adults. These brands sell on that number, so brew them weaker than you would normal coffee. Price tables: [Spicy](https://sharpest.ai/spicy)[Extreme foods](https://sharpest.ai/extreme) ## At a glance | Product | Caffeine (mg / 12 oz) | Lowest eBay | Amazon | |---|---|---|---| | [ Devil Mountain Black Label Coffee](#devil-mountain-black-label-coffee) | 1,555 | [$297](https://sharpest.ai/go/extreme/devil-mountain-black-label-coffee/v1%7C278192382211%7C0) | [Check price](https://www.amazon.com/s?k=devil+mountain+black+label+coffee&tag=sharpestai-20) | | [ Black Insomnia Coffee](#black-insomnia-coffee) | 1,105 | [$14.49](https://sharpest.ai/go/extreme/black-insomnia-coffee/v1%7C285080471433%7C0) | [Check price](https://www.amazon.com/s?k=black+insomnia+coffee&tag=sharpestai-20) | | [ Death Wish Coffee](#death-wish-coffee) | 728 | [$15.26](https://sharpest.ai/go/extreme/death-wish-coffee/v1%7C168725466695%7C0) | [Check price](https://www.amazon.com/s?k=death+wish+coffee&tag=sharpestai-20) | | [ Gunpowder Coffee](#gunpowder-coffee) | 644 | none listed | [Check price](https://www.amazon.com/s?k=gunpowder+coffee&tag=sharpestai-20) | | [ Fire Department Coffee](#fire-department-coffee) | 500 | [$10.49](https://sharpest.ai/go/extreme/fire-department-coffee/v1%7C318334314090%7C0) | [Check price](https://www.amazon.com/s?k=fire+department+coffee&tag=sharpestai-20) | | [ Banned Coffee](#banned-coffee) | 474 | [$21.47](https://sharpest.ai/go/extreme/banned-coffee/v1%7C267804389643%7C0) | [Check price](https://www.amazon.com/s?k=banned+coffee&tag=sharpestai-20) | ## How much is too much? The FDA cites 400 mg a day as an amount not generally linked to negative effects for most adults. One 12 oz cup brewed at the makers' strength compares like this: - Devil Mountain Black Label: 1,555 mg, nearly 4 times the 400 mg figure. - Black Insomnia: 1,105 mg, about 2.8 times. - Death Wish: 728 mg, about 1.8 times. - Fire Department Coffee: 500 mg, 1.25 times. ### Do it safely - Brew these weaker or drink a smaller cup than usual. - Count other caffeine too: energy drinks, tea, soda and pre-workout. ## The coffees, strongest first ### Devil Mountain Black Label Coffee 1,555 mg / 12 oz [source](https://www.caffeineinformer.com/strongest-coffee-brands) [eBay $297](https://sharpest.ai/go/extreme/devil-mountain-black-label-coffee/v1%7C278192382211%7C0)[Amazon](https://www.amazon.com/s?k=devil+mountain+black+label+coffee&tag=sharpestai-20) The highest figure on Caffeine Informer's list of strongest coffee brands: 1,555 mg in a 12 fl oz brewed cup, about eight times a tall Starbucks Dark Roast. ### Black Insomnia Coffee 1,105 mg / 12 oz [source](https://www.caffeineinformer.com/strongest-coffee-brands) [eBay $14.49](https://sharpest.ai/go/extreme/black-insomnia-coffee/v1%7C285080471433%7C0)[Amazon](https://www.amazon.com/s?k=black+insomnia+coffee&tag=sharpestai-20) Listed at 1,105 mg per 12 fl oz brewed, second on Caffeine Informer's list of strongest coffee brands. ### Death Wish Coffee 728 mg / 12 oz [source](https://www.caffeineinformer.com/strongest-coffee-brands) [eBay $15.26](https://sharpest.ai/go/extreme/death-wish-coffee/v1%7C168725466695%7C0)[Amazon](https://www.amazon.com/s?k=death+wish+coffee&tag=sharpestai-20) The brand that bills itself as the "world's strongest". Caffeine Informer lists 728 mg per 12 oz; Consumer Reports measured 59 mg per fluid ounce, or 708 mg in 12 oz. ### Gunpowder Coffee 644 mg / 12 oz [source](https://www.caffeineinformer.com/strongest-coffee-brands) [Amazon](https://www.amazon.com/s?k=gunpowder+coffee&tag=sharpestai-20) Listed at 644 mg per 12 fl oz brewed, roughly three tall Starbucks Dark Roasts in one cup. ### Fire Department Coffee 500 mg / 12 oz [source](https://www.caffeineinformer.com/strongest-coffee-brands) [eBay $10.49](https://sharpest.ai/go/extreme/fire-department-coffee/v1%7C318334314090%7C0)[Amazon](https://www.amazon.com/s?k=fire+department+coffee&tag=sharpestai-20) Listed at 500 mg per 12 fl oz brewed, about two and a half tall Starbucks Dark Roasts. ### Banned Coffee 474 mg / 12 oz [source](https://www.caffeineinformer.com/strongest-coffee-brands) [eBay $21.47](https://sharpest.ai/go/extreme/banned-coffee/v1%7C267804389643%7C0)[Amazon](https://www.amazon.com/s?k=banned+coffee&tag=sharpestai-20) Listed at 474 mg per 12 fl oz brewed, about two and a half times a tall Starbucks Dark Roast. We earn a commission on purchases through these links. eBay prices (item + shipping) read from our latest check; Amazon links open a search, so check the price there. Listed in no particular order. Each figure is the maker’s or the named source’s claim, as of 2026-11-09. ## Good to know - Caffeine figures are as listed by Caffeine Informer (updated 29 April 2025); most are the makers' figures, not independent tests. Real cups vary with how much coffee you use and how you brew it. - Consumer Reports tested Death Wish in 2016 at 59 mg per fluid ounce. ## Watch strong-coffee tests [ ▶**Testing one of the most caffeinated coffees** Morgan Eckroth · YouTube · 2021](https://www.youtube.com/watch?v=9r8LyEYDwws)[ ▶**The 5 strongest caffeinated coffees, reviewed** Hot Shots Coffee · YouTube · 2020](https://www.youtube.com/watch?v=amgJ8s-_Cjs)[ ▶**Devil Mountain Black Label review** Coffeeology · YouTube · 2022](https://www.youtube.com/watch?v=M89R7RxtD8Q) Videos open on YouTube. We don't make or endorse them; they show what the challenge looks like. ## More extremes [Hottest gummy bear](https://sharpest.ai/extremes/hottest-gummy-bear) [Hottest hot sauce](https://sharpest.ai/extremes/hottest-hot-sauce) [Fire Noodle Challenge](https://sharpest.ai/extremes/fire-noodle-challenge) [Sourest candy](https://sharpest.ai/extremes/sourest-candy) [Biggest gummy candy](https://sharpest.ai/extremes/biggest-gummy-candy) [Hottest Takis](https://sharpest.ai/extremes/hottest-takis) [Carolina Reaper](https://sharpest.ai/extremes/carolina-reaper) [Hottest candy](https://sharpest.ai/extremes/hottest-candy) [Disturbing candy](https://sharpest.ai/extremes/disturbing-candy) [Black Death sour challenge](https://sharpest.ai/extremes/worlds-sourest-candy-challenge) [Freeze-dried candy](https://sharpest.ai/extremes/freeze-dried-candy) [Strongest energy drinks](https://sharpest.ai/extremes/strongest-energy-drinks) [Ghost pepper](https://sharpest.ai/extremes/ghost-pepper) [Sourest gummies](https://sharpest.ai/extremes/sourest-gummies) [Hottest Tabasco sauce](https://sharpest.ai/extremes/hottest-tabasco-sauce) ## Sources - [Caffeine Informer: strongest coffee brands, updated 2025-04-29](https://www.caffeineinformer.com/strongest-coffee-brands) - [Consumer Reports: the buzz on Death Wish coffee, Feb 2016](https://www.consumerreports.org/coffee/the-buzz-on-death-wish-coffee/) - [FDA: how much caffeine is too much, Aug 2024](https://www.fda.gov/consumers/consumer-updates/spilling-beans-how-much-caffeine-too-much): “For most adults, the FDA has cited 400 milligrams a day” --- As of 2026-11-12. 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