Monster
How much caffeine is in Java Monster Mean Bean?
Data checked against the source on 2026-10-03 by Oleksii Y.
One 15 fl oz can of Java Monster Mean Bean has 200 mg of caffeine, according to Monster Energy.
How Java Monster Mean Bean compares
- Strength: 45 mg per 100 ml.
- One 15 fl oz can has as much caffeine as about 2 cups of brewed coffee, which has 94.8 mg per 8 fl oz cup.
How much will be left at bedtime?
1 × 15 fl oz can of Java Monster Mean Bean
Left at 11:00 PM (8 h later), average metabolism
≈ 66 mg
Range 31–100 mg (fast to slow metabolism)
To be at 50 mg or less by bedtime, have 200 mg by 12:15 PM (average) or 6:15 AM (slow metabolism).
What sleep studies found near this dose
- Gardiner et al. 2023 (meta-analysis): To avoid losing sleep time, the authors suggest a coffee (107 mg per 250 ml) at least 8.8 hours before bed.
- Gardiner et al. 2023 (meta-analysis): For a pre-workout serving (217.5 mg), the authors suggest at least 13.2 hours before bed.
Estimate from a simple model: half-life of 3, 5 or 8 hours, 50 mg bedtime target. How we calculate
How long does Java Monster Mean Bean stay in your system?
Our model halves caffeine every 5 hours for average metabolism, and every 3 or 8 hours for fast or slow metabolism. From one 15 fl oz can of Java Monster Mean Bean (200 mg), about 100 mg is still in your body 5 hours later and about 50 mg after 10 hours. If you clear caffeine slowly (an 8-hour half-life), about 84 mg is left after 10 hours.
Estimated caffeine left at 11:00 PM from one 15 fl oz can (200 mg), using a half-life of 5 hours for average metabolism and 3 to 8 hours for the range. How we calculate
| Had at | Left at bedtime (average) | Range |
|---|---|---|
| 8:00 AM (15 h before bed) | ≈ 25 mg | 6–55 mg |
| 12:00 PM (11 h before bed) | ≈ 44 mg | 16–77 mg |
| 3:00 PM (8 h before bed) | ≈ 66 mg | 31–100 mg |
| 6:00 PM (5 h before bed) | ≈ 100 mg | 63–130 mg |
How many fit in a day?
Reference amounts are for caffeine from all sources combined. Counted at the upper end of the stated amount, one serving at a time:
- Up to 400 mg a day for most healthy adults (FDA, EFSA): about 2 servings.
- Up to 200 mg at one time for healthy adults (EFSA): about 1 serving in one go.
- Up to 200 mg a day in pregnancy (EFSA, NHS): about 1 serving.
These are reference amounts for groups of people, not a personal limit. Some people feel jittery or sleep worse on much less. See the cutoff calculator for timing.
Good to know
Java Monster Mean Bean is also sold in 11 oz cans, but Monster states caffeine only for the 15 fl oz can.
Java Monster Mean Bean vs other Monster drinks
- Monster Energy (Original Green): Java Monster Mean Bean has more caffeine than Monster Energy (Original Green) per 100 ml (45 vs 34 mg). Java Monster Mean Bean: 200 mg per 15 fl oz can; Monster Energy (Original Green): 160 mg per 16 fl oz can.
- Monster Energy Zero Sugar: Java Monster Mean Bean has more caffeine than Monster Energy Zero Sugar per 100 ml (45 vs 34 mg). Java Monster Mean Bean: 200 mg per 15 fl oz can; Monster Energy Zero Sugar: 160 mg per 16 fl oz can.
- Monster Zero Ultra: Java Monster Mean Bean has more caffeine than Monster Zero Ultra per 100 ml (45 vs 32 mg). Java Monster Mean Bean: 200 mg per 15 fl oz can; Monster Zero Ultra: 150 mg per 16 fl oz can.
Common questions
How much caffeine is in Java Monster Mean Bean?
Monster Energy gives 200 mg of caffeine per 15 fl oz can.
How many Java Monster Mean Bean servings can I have in a day?
The FDA and EFSA cite up to 400 mg of caffeine a day, from all sources combined, for most healthy adults. At 200 mg per 15 fl oz can, that is about 2 servings if Java Monster Mean Bean is your only source. In pregnancy the reference is 200 mg a day.
How late can I drink Java Monster Mean Bean?
With an 11:00 PM bedtime, our model suggests having one serving by about 12:15 PM for average metabolism, or 6:15 AM if you clear caffeine slowly. This is an estimate, not a rule.
Does Java Monster Mean Bean have more caffeine than Monster Energy (Original Green)?
Java Monster Mean Bean has more caffeine than Monster Energy (Original Green) per 100 ml (45 vs 34 mg). Java Monster Mean Bean: 200 mg per 15 fl oz can; Monster Energy (Original Green): 160 mg per 16 fl oz can.
How long does Java Monster Mean Bean stay in your system?
Of the 200 mg in one 15 fl oz can, roughly 100 mg remains after 5 hours and 50 mg after 10 hours with our average 5-hour half-life. From fast to slow metabolism, 10 hours later it is between 20 and 84 mg.
Where the number comes from
- Java Monster Mean Bean. Monster Energy. Product page: "200MG … Caffeine content based on 15 fl oz"; sizes listed 11oz, 15oz. Accessed 2026-10-02. Source ↗
Recipes and labels change. If a number here no longer matches the label, the label wins.
General information, not medical advice
If you feel unwell after caffeine — for example chest pain, a fast or irregular heartbeat that does not settle, fainting, confusion or trouble breathing — get urgent medical help. If you are pregnant, take medication or have a heart, liver or anxiety condition, ask a doctor or pharmacist what amount is right for you.
Sources
- U.S. Food and Drug Administration (2024). Spilling the Beans: How Much Caffeine is Too Much? FDA Consumer Updates. fda.gov ↗
- European Food Safety Authority. Caffeine | EFSA. EFSA topic page (summary of the 2015 Scientific Opinion on the safety of caffeine). efsa.europa.eu ↗
- NHS. Foods to avoid in pregnancy. NHS. nhs.uk ↗
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