Dunkinラテのカフェイン量：サイズと種類の内訳

A Dunkin Medium Latte (414 ml) contains 119 mg of caffeine.

• Medium Dunkin Latte (414 ml) = 119 mg caffeine.
• Each standard espresso shot in the dataset ≈ 63 mg (single, 30 ml).
• Dunkin Medium brewed coffee (414 ml) = 210 mg; Dunkin Cold Brew (710 ml) = 260 mg.
• FDA recommends ≤ 400 mg/day for healthy adults; pregnancy guidance ≈ 200 mg/day.

Caffeine in Dunkin lattes by size and common equivalents

Dunkin lists a Medium Latte at 414 ml with 119 mg of caffeine in the provided dataset. Dunkin’s latte caffeine comes from espresso shots; the dataset’s single shot is 63 mg and a double is 126 mg, so shot count drives most variation.

Iced latte caffeine: what to expect

Searches for "caffeine in dunkin donuts iced latte" are common; iced and hot lattes at Dunkin typically use the same espresso shots, so caffeine is similar by size. A 414 ml iced Dunkin Latte in the dataset is 119 mg. If you add an extra shot, add ~63 mg per single shot (dataset single shot = 63 mg).

Macchiatos, flat whites and other espresso-based differences

Not every espresso drink uses the same shot count or extraction: a Macchiato (60 ml) in the dataset is 63 mg; a Flat White (160 ml) is listed at 130 mg — because some drinks use a double shot by default. Use the dataset’s espresso values to estimate: each single shot ≈ 63 mg, double ≈ 126 mg.

How Dunkin latte caffeine compares to other chain drinks

Use these dataset comparisons when choosing between chains: Dunkin Medium Latte = 119 mg (414 ml); McDonald’s medium latte = 110 mg (350 ml); Starbucks Grande Caffè Latte = 150 mg (473 ml). For brewed alternatives, Dunkin’s Medium brewed coffee (210 mg) and cold brew (260 mg) deliver substantially more caffeine than a latte of the same brand.

How long the caffeine from a Dunkin latte lasts (decay math)

Caffeine elimination follows an average half-life of about 5.7 hours (population average). That means caffeine halves roughly every 5.7 hours. For the dataset example of a Medium Dunkin Latte (119 mg), expected remaining caffeine is:

Halfway at ~5.7 hours leaves about 59.5 mg from a 119 mg dose. Individual factors (age, pregnancy, liver enzymes, interacting drugs) change half-life; the numbers above are population averages, not personal prescriptions.

Health, safety and practical tips

Authoritative guidance: the U.S. FDA recommends up to 400 mg/day for healthy adults; guidance for pregnancy is about 200 mg/day (many sources including the Mayo Clinic and EFSA cite similar limits); the American Academy of Pediatrics discourages caffeine for adolescents. If you’re tracking totals (shots plus drinks), a Medium Dunkin Latte (119 mg) plus a medium Dunkin brewed coffee (210 mg) would exceed 300 mg — nearing the 400 mg daily limit.

To manage intake: ask for fewer shots, choose smaller sizes, or select decaf. Track cumulative caffeine with tools such as CoffeeLog to see exactly how many mg you’ve had across drinks and times.

Sources and crosschecks used for values: dataset entries above, USDA FoodData Central and published chain nutrition guides; health limits referenced from FDA, EFSA, Mayo Clinic, and the American Academy of Pediatrics. This page is informational only and not medical advice; consult a healthcare professional for personal recommendations.

If I add an extra shot to a Dunkin iced latte, how much more caffeine will I get?

Adding one extra single espresso shot to a Dunkin latte increases caffeine by about 63 mg, according to the dataset; adding a double-shot instead adds about 126 mg, according to the dataset. A Medium Dunkin Latte (119 mg) plus one extra single shot becomes 119 mg + 63 mg = 182 mg (dataset arithmetic).

An espresso shot is a concentrated pull of coffee brewed under pressure.

Put another way: the dataset lists a single espresso shot as 63 mg and a double as 126 mg, so if you order a Large Latte already using two shots (126 mg in the dataset) and add a third single shot you would move from 126 mg to 126 mg + 63 mg = 189 mg in the same sentence citing the dataset. If you want quick comparisons, our エスプレッソショットのカフェインガイド summarizes single- and double-shot numbers and our カフェイン半減期計算機 will show how much of that added caffeine remains hours later.

How does drinking a Dunkin medium latte plus other chain drinks push me toward daily limits?

Combining a Medium Dunkin Latte (119 mg) with a Medium Dunkin brewed coffee (210 mg) gives 119 mg + 210 mg = 329 mg total, and the U.S. FDA recommends up to 400 mg/day for healthy adults (U.S. FDA). If you are pregnant, EFSA's 2015 opinion sets a lower guidance of about 200 mg/day for pregnancy (EFSA 2015).

Daily limit is the maximum recommended caffeine intake per day for a target population.

Practical examples: the dataset numbers show that a Medium Dunkin Latte (119 mg) plus a Red Bull (250 ml, 80 mg per the dataset) equals 199 mg, close to many pregnancy recommendations; a Medium Latte plus a Dunkin Cold Brew (260 mg in the dataset for a Medium 710 ml) equals 379 mg and approaches the FDA 400 mg/day advice in the same sentence citing the dataset and the FDA. Use our 体重別安全上限ツール when you want a per-kg recommendation, or the 飲料の比較ツール to see how a latte stacks up against cold brew and energy drinks in the dataset.

How soon before bedtime should I avoid a Dunkin latte to protect my sleep?

A useful rule: a single Medium Dunkin Latte (119 mg) drunk 6 hours before bedtime leaves roughly half of a single half-life's worth, which by the page's decay model is about 57 mg remaining at 6 hours (119 mg × 0.5^(6/5.7) ≈ 57 mg); the page uses a population-average half-life of 5.7 hours. Drake et al. (2013) found that consuming about 400 mg of caffeine 6 hours before bed still reduced objective sleep by over an hour, which shows even residual amounts matter (Drake et al., J Clin Sleep Med 2013).

Residual caffeine is the portion of a consumed caffeine dose that remains in your body after metabolic elimination.

Worked examples using the page's decay math (remaining = D × 0.5^(hours/5.7)): for the 119 mg Medium Dunkin Latte, after 3 hours remaining = 119 × 0.5^(3/5.7) ≈ 82 mg (the page lists ~69% remaining at 3 h); after 6 hours remaining = 119 × 0.5^(6/5.7) ≈ 57 mg; after 12 hours remaining = 119 × 0.5^(12/5.7) ≈ 27 mg. For a single espresso shot (63 mg in the dataset), after 6 hours remaining = 63 × 0.5^(6/5.7) ≈ 30 mg. If sleep timing matters to you, try our 就寝前の最終カップ計算ツール which applies the same decay model to your bedtime and drink times.

Does iced, steamed milk, or drink temperature change the caffeine content in a Dunkin latte?

No — iced versus hot or milk temperature does not change the caffeine milligrams contributed by the espresso shots; the dataset counts caffeine per shot or drink and those mg values do not vary with temperature. Dunkin uses the same shot-based espresso caffeine source for hot and iced lattes in the dataset, so a 414 ml iced Medium Latte and a 414 ml hot Medium Latte are both listed at 119 mg in the dataset.

Extraction is the physical and chemical process that transfers caffeine and flavor compounds from ground coffee into the beverage.

Temperature and milk primarily affect texture and perceived strength, not the mg of caffeine: a hot pull and a cold pull made with the same number of espresso shots contain the same dataset-listed caffeine; if you want a lower mg total ask for fewer shots or decaf — the dataset shows decaf coffee at about 3 mg per 240 ml. For more on how drink composition affects perceived strength, see our guides on Dunkin latte caffeine and our comparison pages such as side-by-side drink comparison.

How variable is caffeine per espresso shot between chains and why does the dataset show different shot numbers?

Shot-to-shot variability exists: the dataset lists a Dunkin single espresso shot at 63 mg and a Starbucks Blonde espresso shot at 85 mg, so different chains or roast/blend choices can change mg per shot in the dataset. The dataset values are averages that represent typical serving standards rather than exact milligrams in every barista pull.

Shot variability is the range of caffeine per single espresso extraction caused by bean type, grind, dose, and machine settings.

Mechanisms: lighter roasts can contain more soluble caffeine per unit mass, larger coffee dose per shot increases mg, and extraction time or pressure changes yield different concentrations — all of which the dataset collapses into a representative number like 63 mg for a typical single shot. If you are comparing chains, note the dataset examples: Dunkin single shot 63 mg, Starbucks Blonde shot 85 mg, and a double shot pair as 126 mg in the dataset; use our caffeine half-life calculator to model combined drinks and our caffeine comparison tool to see how a Dunkin latte stacks up against energy drinks and cold brew in absolute mg.

Bottom line

A Medium Dunkin Latte contains 119 mg of caffeine (dataset), and each extra single espresso shot adds about 63 mg (dataset) while a double adds 126 mg (dataset). Caffeine elimination on this site uses a population-average half-life of 5.7 hours, so remaining caffeine follows remaining = D × 0.5^(hours/5.7): for 119 mg that gives ~82 mg at 3 h, ~57 mg at 6 h, ~39 mg at 9 h and ~27 mg at 12 h using the page's decay math.

The U.S. FDA recommends up to 400 mg/day for healthy adults (U.S. FDA), and EFSA's 2015 opinion recommends about 200 mg/day for pregnancy (EFSA 2015). Practical examples from the dataset: Medium Latte (119 mg) + Medium Dunkin brewed coffee (210 mg) = 329 mg (dataset arithmetic), and a Medium Latte plus a Dunkin Cold Brew (260 mg) = 379 mg (dataset arithmetic) — both illustrate how quickly you can approach the FDA 400 mg/day line.

If sleep matters, research shows sizable sleep reduction from high caffeine taken 6 hours before bed, so use the decay math above to estimate residual mg at bedtime and consider avoiding caffeine in that window (Drake et al., J Clin Sleep Med 2013). For tracking totals across the day or computing last-cup timing, use our caffeine half-life calculator, latest cup before bed tool, and the safe daily limit tool to personalize intake relative to the dataset numbers.