Caffeine in drinks
How much caffeine is in 3 Musketeers?
Sources checked claim by claim by an AI review. Approved for publishing by Oleksii Y. on 2026-10-19.
One 2.13 oz bar (60 g) of 3 Musketeers has 4.2 mg of caffeine, according to USDA Agricultural Research Service, FoodData Central (SR Legacy).
How 3 Musketeers compares
- Strength: 7 mg per 100 g.
- One 2.13 oz bar (60 g) has as much caffeine as less than a sixth of a cup of brewed coffee, which has 94.8 mg per 8 fl oz cup.
- Of the 9 other candy bars and chocolate candies in our candy bars chart, 4 have more caffeine per serving and 5 have less.
How much will be left at bedtime?
1 × 2.13 oz bar (60 g) of 3 Musketeers
Left at 11:00 PM (8 h later), average metabolism
≈ 1.4 mg
Range 0.7–2.1 mg (fast to slow metabolism)
4.2 mg is already at or under the 50 mg this tool aims to have left at bedtime.
Estimate from a simple model: half-life of 3, 5 or 8 hours, 50 mg bedtime target. How we calculate
How long does 3 Musketeers 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 2.13 oz bar (60 g) of 3 Musketeers (4.2 mg), about 2.1 mg is still in your body 5 hours later and about 1.1 mg after 10 hours. If you clear caffeine slowly (an 8-hour half-life), about 1.8 mg is left after 10 hours.
Estimated caffeine left at 11:00 PM from one 2.13 oz bar (60 g) (4.2 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) | ≈ 0.5 mg | 0.1–1.1 mg |
| 12:00 PM (11 h before bed) | ≈ 0.9 mg | 0.3–1.6 mg |
| 3:00 PM (8 h before bed) | ≈ 1.4 mg | 0.7–2.1 mg |
| 6:00 PM (5 h before bed) | ≈ 2.1 mg | 1.3–2.7 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 95 servings.
- Up to 200 mg at one time for healthy adults (EFSA): about 47 servings in one go.
- Up to 200 mg a day in pregnancy (EFSA, NHS): about 47 servings.
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
USDA's 3 Musketeers figure is an estimate worked out from the ingredient list and the label, not a lab measurement.
How the serving amount was worked out: USDA estimate: 7 mg per 100 g, calculated from the ingredient list and the label; 60 g × 0.07 = 4.2 mg.
Common questions
How much caffeine is in 3 Musketeers?
USDA Agricultural Research Service, FoodData Central (SR Legacy) gives 4.2 mg of caffeine per 2.13 oz bar (60 g).
How many 3 Musketeers 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 4.2 mg per 2.13 oz bar (60 g), that is about 95 servings if 3 Musketeers is your only source. In pregnancy the reference is 200 mg a day.
How late can I drink 3 Musketeers?
One serving has about 4.2 mg, which is at or under the 50 mg our calculator aims to have left at bedtime, so it sets no cutoff for a single serving. Several servings add up.
How long does 3 Musketeers stay in your system?
Of the 4.2 mg in one 2.13 oz bar (60 g), roughly 2.1 mg remains after 5 hours and 1.1 mg after 10 hours with our average 5-hour half-life. From fast to slow metabolism, 10 hours later it is between 0.4 and 1.8 mg.
Where the number comes from
- Candies, MARS SNACKFOOD US, 3 MUSKETEERS Bar. USDA Agricultural Research Service, FoodData Central (SR Legacy). FDC ID 168767, nutrient "Caffeine" (262): 7 mg per 100 g, derivation FLC (estimated formulation, label claim); portion "serving 2.13 oz bar" = 60 g. 3 Musketeers' own site (3musketeers.com) gave no caffeine figure we could read on 2026-10-13, so these numbers are USDA's. Accessed 2026-10-09. 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 or breastfeeding, under 18, take medication, or have a heart, liver or anxiety condition, high blood pressure or a sleep disorder, 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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