Bloom Energy drinks are a better choice than most mainstream energy drinks, but “good for you” is a stretch for any caffeinated, artificially sweetened beverage. With zero sugar, 10 calories, and 180 mg of caffeine per 12-ounce can, Bloom avoids the biggest pitfalls of brands like Red Bull and Monster while adding ingredients like L-theanine and ginseng that may offer modest cognitive benefits. Whether it deserves a spot in your daily routine depends on how much caffeine you’re already consuming and how your body handles sugar substitutes.
What’s Actually in a Can
Each 12-ounce can of Bloom Sparkling Energy contains 180 mg of caffeine sourced from green coffee bean extract, zero grams of sugar, and roughly 10 calories. For context, a standard 12-ounce Red Bull has about 111 mg of caffeine and a significant dose of sugar (unless you buy the sugar-free version). A 16-ounce Monster packs around 160 mg of caffeine with 54 grams of sugar. Bloom skips the sugar entirely, which eliminates the energy crash and empty calories that make traditional energy drinks problematic.
Beyond caffeine, Bloom includes L-theanine and ginseng. L-theanine is an amino acid found naturally in tea leaves that can take the jittery edge off caffeine, promoting a calmer, more focused kind of alertness. Ginseng has a long history of use for mental clarity and energy, though the evidence is stronger in some studies than others. Bloom doesn’t disclose exactly how much of either ingredient is in each can, which makes it hard to say whether the doses are high enough to deliver real benefits or just present for marketing purposes.
The Caffeine Question
At 180 mg per can, Bloom delivers a solid caffeine hit. The FDA considers up to 400 mg per day safe for most healthy adults, so one can puts you at nearly half that limit. If you’re also drinking coffee, tea, or pre-workout supplements, that 400 mg ceiling can come up fast. Two cans of Bloom alone would put you at 360 mg, leaving almost no room for any other caffeine source.
Caffeine sensitivity varies widely from person to person. Some people metabolize it quickly and feel fine after 300 mg. Others get anxious, jittery, or struggle to sleep after just 100 mg. If you already know caffeine doesn’t sit well with you, Bloom’s 180 mg dose is high enough to cause problems. For people who tolerate caffeine normally, one can is well within safe limits.
Pregnant or breastfeeding women should be more cautious. The safe daily caffeine threshold drops to 200 mg during pregnancy, so a single can of Bloom would account for nearly all of that allowance. Children and adolescents are better off avoiding energy drinks entirely. Neither the FDA nor the European Food Safety Authority has established a safe caffeine limit for young people, and the American Academy of Pediatrics recommends against consumption due to potential effects on behavior and development.
Zero Sugar, but Not Sweetener-Free
Bloom gets its sweetness without sugar by using zero-calorie sweeteners. The formulation may include sucralose, acesulfame potassium, stevia, or a combination of these. This is the trade-off with every sugar-free energy drink: you avoid the 40 to 55 grams of sugar found in a regular Monster or Red Bull, but you’re consuming artificial or non-nutritive sweeteners instead.
The health debate around these sweeteners is ongoing. Most regulatory agencies consider them safe in the amounts found in a single drink. However, some people report digestive discomfort from sucralose or sugar alcohols, particularly bloating or gas. If you have a sensitive stomach, this is worth paying attention to. The gut health concerns around artificial sweeteners tend to show up in studies involving very high daily intake over long periods, not from an occasional can.
How It Compares to Coffee
A standard 12-ounce cup of brewed coffee contains roughly 120 to 140 mg of caffeine, no sugar (black), and essentially zero calories. Bloom gives you about 40 to 60 mg more caffeine per serving, plus the L-theanine and ginseng. If you’re choosing between black coffee and Bloom, the coffee is simpler and avoids artificial sweeteners altogether. If you’re choosing between Bloom and a sugary energy drink, Bloom wins easily on the nutrition label.
The real advantage Bloom has over coffee for some people is convenience and taste. Not everyone likes coffee, and the carbonated, flavored format appeals to people who want something that feels more like a soda. That’s a perfectly valid reason to choose it, as long as you’re aware of what you’re drinking.
Can You Drink One Every Day?
Harvard Health recommends limiting energy drink consumption to no more than one per day, and notes that it shouldn’t become a long-term daily habit. The concern isn’t one specific ingredient at dangerous levels. It’s the cumulative effect of relying on caffeine and stimulants for energy instead of addressing the underlying reasons you’re tired, whether that’s poor sleep, dehydration, stress, or nutritional gaps.
One can of Bloom on a busy afternoon is unlikely to cause harm for a healthy adult. Making it a twice-daily ritual alongside morning coffee pushes your caffeine intake into a range where sleep disruption, elevated heart rate, and anxiety become more likely. People with pre-existing heart conditions face additional risk. Research shows that energy drink consumption can worsen cardiac conduction problems and has, in some cases, revealed previously undiagnosed heart conditions.
The Bottom Line on Bloom
Bloom is a cleaner option in a category full of sugar-loaded, artificially colored competitors. Zero sugar, moderate calories, and the inclusion of L-theanine are genuine positives. But it’s still an energy drink with a substantial caffeine dose and artificial sweeteners. It’s not a health food. It’s a less-bad energy drink, and for most healthy adults, an occasional can is perfectly fine.