Red Bull Caffeine: How Much Is in Each Can?

A 250 ml can of Red Bull contains 80 mg of caffeine.

• 80 mg — caffeine in a standard 250 ml Red Bull can (32 mg/100 ml).
• 114 mg — caffeine in the 355 ml Red Bull can (32.1 mg/100 ml).
• 48% — roughly the fraction of a dose remaining after 6 hours (population average half-life ≈5.7 h).
• 400 mg/day — FDA's recommended caffeine upper limit for healthy adults; pregnancy guidance is ~200 mg/day.

Caffeine amount in standard Red Bull cans

Red Bull is sold in at least two common single-serve sizes in data sources: a 250 ml can with 80 mg of caffeine and a 355 ml can with 114 mg. The product's concentration is about 32 mg of caffeine per 100 ml, so the larger can scales proportionally.

How Red Bull compares to coffee and other energy drinks

Put the numbers side-by-side to see what one can does relative to coffee and other energy products. These are dataset values; use them to match consumption to your daily limit.

Drink	Serving	Caffeine (mg)
Red Bull (standard)	250 ml	80 mg
Red Bull (large)	355 ml	114 mg
Monster Energy	473 ml	160 mg
Bang	473 ml	300 mg
Starbucks Pike Place (Grande)	473 ml	310 mg
Cold brew	240 ml	200 mg
Drip coffee	240 ml	96 mg
Espresso (single)	30 ml	63 mg
Latte	240 ml	68 mg
Coca‑Cola (can)	355 ml	34 mg
5‑Hour Energy	57 ml	200 mg
Pre‑workout (1 scoop)	300 ml	200 mg

Practical comparisons

A single 250 ml Red Bull (80 mg) has less caffeine than a typical 240 ml cold brew (200 mg) or a 473 ml Starbucks Pike Place (310 mg). It has about the same caffeine as a strong single espresso (63 mg) plus a small extra margin. For many people one Red Bull is a moderate dose; stacking multiple cans or combining with coffee quickly reaches the FDA 400 mg limit.

How long Red Bull's caffeine lasts (decay math)

Caffeine elimination follows population-average kinetics with a half-life ≈5.7 hours. That means roughly 69% of a dose remains after 3 hours, 48% after 6 hours, 33% after 9 hours and 23% after 12 hours. Below are concrete numbers for common doses.

Time after consumption	250 ml Red Bull (80 mg)	355 ml Red Bull (114 mg)	Monster (160 mg)
0 h	80 mg	114 mg	160 mg
3 h (~69% remain)	55 mg	79 mg	110 mg
6 h (~48% remain)	38 mg	55 mg	77 mg
9 h (~33% remain)	26 mg	38 mg	53 mg
12 h (~23% remain)	18 mg	26 mg	37 mg

Use these numbers to time consumption: for example, an 80 mg can drunk at 6 p.m. leaves roughly 38 mg at midnight—enough in sensitive people to affect sleep. If you track intake, a log (for example CoffeeLog) will compute cumulative residual caffeine automatically.

Ingredients, formulation and what affects caffeine content

Red Bull's active stimulant is caffeine; the beverage also contains ingredients like taurine and B‑vitamins plus sugar or sweeteners depending on the variant. The caffeine content is set during manufacturing, so unlike brewed coffee it doesn’t vary much by 'brew' technique. For coffee, brewing method (cold brew, pour‑over, espresso) and serving size cause far larger variability — see the comparison table.

Health considerations and safe daily limits

Regulatory and clinical guidance sets conservative limits: the U.S. FDA cites 400 mg/day as an upper limit for most healthy adults; many authorities (including EFSA) provide similar guidance. For pregnancy, agencies commonly recommend approximately 200 mg/day—pregnant people should consult their clinician and count all sources. The American Academy of Pediatrics discourages energy drinks for children and adolescents because of possible cardiac and neurobehavioral effects.

Acute overconsumption risks include palpitations, tremor, anxiety, GI upset and, at very high doses, arrhythmias or seizures; seek emergency care if someone ingests a very large amount or has severe symptoms. Withdrawal after stopping regular caffeine can cause headache, fatigue and irritability; taper if you are reducing intake.

Timing, stacking and practical guidance

• Space doses: with a 5.7 h half‑life, expect about half of a Red Bull’s caffeine to clear every ~5–6 hours; stacking multiple cans within a few hours multiplies residual amounts.
• Before sleep: avoid caffeine within 6–8 hours of bedtime if you’re sensitive—an 80 mg can can leave 38 mg or more at bedtime and impair sleep.
• Combine sources: count coffee, tea, cola, pills and pre‑workout. A single Starbucks Pike Place (310 mg) plus a 250 ml Red Bull could exceed 400 mg.
• Track intake: use an app like CoffeeLog to record servings and see cumulative caffeine and expected residuals over time.

Final notes and sources

Numbers above use the dataset caffeine values for beverages and the population-average caffeine half-life (≈5.7 h). Authoritative sources for health guidance include the U.S. Food and Drug Administration (FDA), European Food Safety Authority (EFSA), USDA FoodData Central for food composition, and clinical guidance from organizations such as the American Academy of Pediatrics and Mayo Clinic. This page is informational only and not medical advice—consult a healthcare provider for personalized recommendations.