TL;DR

Dunkin' Espresso contains 118 mg of caffeine per Single shot (approx 2 oz) (59 ml / 2 oz). That is about 1.2 times the caffeine of a typical 8 oz cup of brewed coffee (about 95 mg).

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Dunkin' Espresso Caffeine Content by Serving

Figures are for Espresso (single shot) (Dunkin).

ServingVolumeCaffeinePer 100 mlLevel
Single shot (approx 2 oz)59 ml / 2 oz118 mg200 mgModerate

Source: caffeine figures from Caffeine Informer Dunkin guide (values sourced from dunkindonuts.com), accessed 2026-06-11. Values can vary by batch, location, and preparation; check the label or the source for the latest figures.

How Dunkin' Espresso Compares to Coffee

At 118 mg per Single shot (approx 2 oz), Dunkin' Espresso delivers about 1.2 times the caffeine of a typical 8 oz cup of brewed coffee (about 95 mg). For a wider comparison across drinks, try the caffeine comparison tool or browse the full caffeine database.

When to Stop Drinking Dunkin' Espresso Before Bed

With caffeine's median 5-hour half-life, a Single shot (approx 2 oz) of Dunkin' Espresso (118 mg) needs about 6 h 12 min to fall under 50 mg, the level where most people can fall asleep normally. That puts the last call at 3:45 PM (15:45) for a 10 PM bedtime and 4:45 PM (16:45) for an 11 PM bedtime. Individual half-lives range from roughly 2 to 12 hours, so treat these as a starting point.

The Dunkin' Espresso sleep cutoff page has last-call times for four bedtimes, and the caffeine half-life calculator personalizes the curve to your metabolism.

Related Guides

Frequently Asked Questions

A Single shot (approx 2 oz) of Dunkin' Espresso contains 118 mg of caffeine, per Caffeine Informer Dunkin guide (values sourced from dunkindonuts.com) (accessed 2026-06-11). That is about 1.2 times the caffeine of a typical 8 oz cup of brewed coffee (about 95 mg).
It is a moderate dose. The FDA's guideline for healthy adults is 400 mg per day, so it would take about 3 servings of Dunkin' Espresso to reach the limit. Timing matters more than the single dose: 118 mg in the evening can still disturb sleep.
Caffeine's median half-life is about 5 hours, so the 118 mg in a Single shot (approx 2 oz) drops to roughly 59 mg after 5 hours and 30 mg after 10 hours. Individual half-lives range from about 2 to 12 hours depending on CYP1A2 genetics, medications, smoking, and pregnancy. Model your own curve with the caffeine half-life calculator.
For an 11 PM bedtime, have your last Single shot (approx 2 oz) of Dunkin' Espresso by 4:45 PM (16:45) to be under 50 mg of residual caffeine at lights out, assuming the median 5-hour half-life. See the full bedtime table on the Dunkin' Espresso sleep cutoff page.

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Medical Disclaimer: Caffeine values are approximate figures from the cited public sources. Actual content may vary by batch, location, and preparation, and caffeine metabolism varies widely between individuals. This page is for informational purposes only and is not medical advice. The FDA guideline for healthy adults is up to 400 mg of caffeine per day; the recommended limit during pregnancy is 200 mg per day. Consult a healthcare professional for personalized guidance.