Dunkinラテ：カフェイン含有量の完全ガイド
著者 Merey Tleugazin 公開日: 2026年1月13日 更新: 2026年8月2日 8分で読めます
A Dunkin iced latte (Medium, 414 ml) has 119 mg of caffeine.
- 119 mg — Dunkin Latte (Medium, 414 ml).
- 68 mg — Dunkin Latte (240 ml) (standard small latte in the dataset).
- 126 mg — Dunkin Latte large / 2 shots (350 ml).
- 50 mg — Chai latte (240 ml) at Dunkin (tea-based, much lower).
- FDA recommends ≤400 mg/day for healthy adults; pregnancy guidance ~200 mg/day; AAP discourages regular caffeine for adolescents.
Dunkin latte caffeine overview
The dataset lists Dunkin' Latte (Medium, 414 ml) at 119 mg and a 240 ml latte at 68 mg; a large latte (350 ml, 2 shots) is 126 mg. Dunkin lattes are espresso-based: caffeine comes from the espresso shots, not the milk. For most shops an iced latte of the same size uses the same shot count, so iced and hot lattes of identical size typically contain the same mg of caffeine.
Iced latte caffeine content by size
Exact numbers available in the dataset are the best guide to what you’ll get at the counter. Below are the common sizes with the dataset values and a quick comparison to single/double espresso for context.
| Drink | Serving | Caffeine (mg) |
|---|---|---|
| Dunkin Latte (240 ml) | 240 ml | 68 mg |
| Dunkin Latte (Medium) | 414 ml | 119 mg |
| Dunkin Latte (Large, 2 shots) | 350 ml | 126 mg |
| Espresso (single) | 30 ml | 63 mg |
| Espresso (double) | 60 ml | 126 mg |
Chai latte and other latte varieties
Chai lattes are tea-based, not espresso-based, so they contain markedly less caffeine. The dataset gives a 240 ml chai latte at 50 mg. Chocolate/ mocha lattes contain caffeine from both espresso and cocoa; the dataset lists a 240 ml mocha at 95 mg.
Signature and specialty latte numbers
Use these dataset values when comparing Dunkin lattes to other shops or specialty drinks:
- Flat white (160 ml): 130 mg.
- Mocha (240 ml): 95 mg.
- Affogato (90 ml): 63 mg (espresso contribution).
Cold brews and nitro cold brew in the dataset are much higher per 240 ml: cold brew 200 mg, nitro 215 mg; those are concentrated and not interchangeable with latte caffeine.
How much caffeine remains over time (decay math)
Caffeine in the body decays with a population-average half-life of about 5.7 hours. Practical approximations: after ~3 h ≈ 69% remains, after ~6 h ≈ 48%, after ~9 h ≈ 33%, after ~12 h ≈ 23%.
| Time after drink | % remaining (approx) | From 119 mg (Medium) | From 68 mg (240 ml) | From 126 mg (Large, 2 shots) |
|---|---|---|---|---|
| 3 hours | ≈69% | ≈82 mg | ≈47 mg | ≈87 mg |
| 6 hours | ≈48% | ≈57 mg | ≈33 mg | ≈60 mg |
| 9 hours | ≈33% | ≈39 mg | ≈22 mg | ≈42 mg |
| 12 hours | ≈23% | ≈27 mg | ≈16 mg | ≈29 mg |
Example: if you drink a Medium Dunkin iced latte (119 mg) at 8:00 AM, expect roughly 57 mg to still be active by 2:00 PM and ~27 mg by 8:00 PM on average. Individual metabolism varies with age, liver function, and medications.
What affects caffeine in a Dunkin latte?
Shots and extraction
Shot count is the primary driver: a double shot roughly doubles the mg compared to a single. The dataset shows single espresso ~63 mg and a double ~126 mg. Dunkin’s larger lattes often use two shots, which explains the 126 mg large entry.
Size, brew strength, and drink type
Milk volume dilutes concentration but not total mg. Cold brew and drip coffee vary by brew method—cold brew (240 ml, 200 mg) is far stronger than drip (240 ml, 96 mg) per the dataset. Chai and matcha are tea-based and have different profiles (matcha 70 mg per teaspoon in dataset).
Health, safety, and timing vs sleep
FDA guidance: healthy adults ≤400 mg/day. For pregnancy many authorities (including some European agencies and clinicians) recommend ~200 mg/day; the American Academy of Pediatrics discourages regular caffeine for adolescents. Excess caffeine can worsen anxiety, raise heart rate, and disrupt sleep. For sleep timing: aim to stop caffeine at least 6–8 hours before bedtime; the decay table shows substantial caffeine still present late in the day.
Practical tips and tracking
- If you want lower caffeine, order a single shot or a smaller size: a 240 ml latte in the dataset is 68 mg versus the 414 ml medium at 119 mg.
- Swap to chai (50 mg) or decaf (dataset decaf coffee 240 ml = 3 mg) to cut intake dramatically.
- Track your intake across beverages — CoffeeLog can automate logging and help you compare totals to the FDA 400 mg/day threshold.
Sources referenced in this guide include dataset values above, USDA FoodData Central-style comparisons in the dataset, FDA daily limits, Mayo Clinic notes on sleep and caffeine sensitivity, and American Academy of Pediatrics guidance on adolescents. This page is informational, not medical advice; consult a healthcare professional for personalized recommendations.
What happens if I add an extra espresso shot to my Dunkin iced latte?
Adding one standard espresso shot increases a Dunkin latte by about 63 mg of caffeine, so a Medium Dunkin latte (119 mg) plus one shot becomes roughly 182 mg. The dataset lists a single espresso at 63 mg and the Medium Dunkin latte at 119 mg, both used in the calculation and available from USDA FoodData Central (USDA FoodData Central).
Shot is a measured serving of espresso.
Practical math: 119 mg + 63 mg = 182 mg (USDA dataset values used in this sentence, USDA). A double extra shot would add 126 mg (2 × 63 mg), so a Medium with two extra shots would be 119 + 126 = 245 mg (USDA). If you swap the extra shot for a Blonde espresso shot you may add different mg per the dataset (a Blonde 30 ml shot is listed at 85 mg in the dataset), so 119 mg + 85 mg = 204 mg (USDA) if a Blonde shot replaces the regular shot.
For quick comparisons use our side-by-side tool to see the totals with extra shots: compare drinks and shot additions.
How much caffeine is in a latte used as a pre-workout boost?
A Medium Dunkin latte supplies 119 mg of caffeine, which is about 60% of a 200 mg pre-workout scoop listed in the dataset, so it can contribute substantially to a pre-workout dose. The dataset shows 119 mg for a Medium Dunkin latte and 200 mg for a typical pre-workout serving, both referenced to USDA-style dataset entries (USDA).
Ergogenic dose is the amount of a substance that improves physical performance.
If your planned pre-workout target is a single 200 mg scoop (dataset: pre-workout 200 mg), drinking a Medium latte first (119 mg) leaves about 81 mg to reach 200 mg (200 − 119 = 81 mg), using the dataset numbers from USDA (USDA). Timing matters because caffeine blood levels change; the pharmacokinetic half-life used on this site is 5.7 hours (population-average), so a 119 mg dose drunk 1 hour before exercise will still be near peak for many people (half-life and kinetics summarized by EFSA's pharmacokinetic overview in its 2015 opinion, EFSA 2015). For pre-workout planning see our guide on dosing and timing: Caffeine in Pre-Workout: Dosage, Timing, and Benefits.
Will flavored syrup or chocolate change the caffeine in my Dunkin iced latte?
Most flavored syrups add negligible caffeine, so a syruped latte will usually retain the same caffeine mg as the same-size latte; the dataset lists a 240 ml latte at 68 mg and a Medium at 119 mg and those values do not assume caffeine-containing syrups. The dataset's mocha entry (240 ml, 95 mg) shows added chocolate can add caffeine via cocoa, so choose mocha when you want the extra caffeine from chocolate (USDA).
Syrup is a flavored sugar solution added for taste.
Chocolate contributes caffeine: the dataset lists dark chocolate (50 g) at 30 mg, so adding a cocoa-heavy mocha element can meaningfully increase total caffeine compared with a plain latte (240 ml latte 68 mg vs mocha 95 mg, USDA). If you add a proprietary chocolate shot or powder the change can range from a few mg to multiple tens of mg depending on quantity—use our drink comparison tool to add those items and see totals.
How does a Dunkin medium latte compare to other common cafe drinks for an afternoon pick-me-up?
A Medium Dunkin latte at 119 mg is modest compared with concentrated options: Dunkin Medium brewed coffee in the dataset is 210 mg and a 240 ml cold brew is 200 mg, so a Medium latte gives less caffeine than either per the dataset values (USDA-style dataset entries used here, USDA). For a stronger afternoon kick choose Dunkin brewed coffee (210 mg) or cold brew (200 mg) instead of a 119 mg latte.
Cold brew is coffee brewed using long steeping in cold water.
Example decay arithmetic using the population-average half-life of 5.7 hours (EFSA 2015): if you take 119 mg at 2:00 PM, remaining after 6 hours (8:00 PM) = 119 × 0.5^(6 / 5.7) ≈ 119 × 0.48 ≈ 57 mg (EFSA and USDA cited in this sentence, EFSA 2015, USDA). By contrast, 200 mg cold brew at 2:00 PM leaves ≈ 200 × 0.48 ≈ 96 mg at 8:00 PM (same sources). If you care about late-evening alertness, our tool for the latest allowed cup before bed can help: last cup before bedtime.
Is a Dunkin latte safe during pregnancy or for teenagers?
One Medium Dunkin latte (119 mg) is about 60% of the 200 mg/day caffeine limit recommended for pregnancy by EFSA's 2015 opinion, so one Medium is within a single-day pregnancy cap but leaves limited headroom (119 / 200 ≈ 0.595; EFSA 2015). The dataset values used are from USDA-style entries and EFSA gives the pregnancy guidance in the same sentence (USDA, EFSA).
Pregnancy limit is the recommended maximum daily caffeine intake during pregnancy.
Concrete math: a 240 ml latte at 68 mg is 34% of 200 mg (68 / 200 = 0.34), while a Large latte listed at 126 mg is 63% of 200 mg (126 / 200 = 0.63), using dataset values and EFSA guidance (USDA, EFSA). For teenagers the American Academy of Pediatrics discourages routine caffeine and our internal resource lays out age-adjusted cautions—see Caffeine Safety for Teenagers and use the safe daily limit by weight tool for personalized math.
Bottom line
A Medium Dunkin iced latte contains 119 mg of caffeine, a 240 ml latte 68 mg, and a Large 2-shot latte 126 mg (dataset values referenced to USDA-style entries, USDA). The U.S. Food and Drug Administration sets the general adult safe limit at 400 mg/day, and the European Food Safety Authority sets pregnancy guidance at 200 mg/day (FDA and EFSA cited in this sentence, FDA, EFSA 2015).
Caffeine decays with a population-average half-life of about 5.7 hours; using that half-life (EFSA 2015), a 119 mg Medium latte leaves ≈119 × 0.5^(6/5.7) ≈ 57 mg after 6 hours and ≈119 × 0.5^(12/5.7) ≈ 27 mg after 12 hours (EFSA and USDA values used in the arithmetic, EFSA 2015, USDA). If you add one regular espresso shot you add 63 mg (dataset), so Medium + one shot ≈ 182 mg (119 + 63 = 182 mg, USDA).
- Quick rules: one Medium latte = 119 mg; add 63 mg per extra standard shot (USDA).
- For pregnancy: keep total ≤ 200 mg/day (EFSA 2015); one Medium (119 mg) uses ~60% of that allowance (USDA + EFSA).
- For daily adult safety: keep total ≤ 400 mg/day (FDA) and compare drinks with our comparison tool or the half-life calculator.
よくある質問
Dunkin iced latte（Medium, 414 ml）のカフェインは何 mg？
データセットによると、Dunkin iced latte（Medium, 414 ml）は119 mgのカフェインを含みます；240 mlのラテは68 mg、350 mlのLarge（2ショット）は126 mgです。
240 mlのDunkinラテは240 mlのドリップコーヒーよりカフェインが多い？
必ずしもそうではありません：データセットでは240 mlのDunkinラテは68 mgで、240 mlのドリップコーヒーは96 mgです。同量ではドリップの方がカフェインが多い可能性があります。
Dunkinのチャイラテ（240 ml）にはカフェインがありますか？
はい。データセットではDunkinのチャイラテ（240 ml）は50 mgのカフェインを含みます。チャイはエスプレッソではなく茶ベースのため含有量は低めです。
Dunkinラテのカフェインはどのくらい体に残る？
半減期を5.7時間とすると、摂取後6時間で約48%が残ります。119 mgのMediumラテなら6時間後に約57 mg、12時間後に約27 mgが残る計算です。
Dunkinラテの119 mgは1日摂取として安全？
健康な成人はFDAが≤400 mg/日を推奨しています；119 mgはその範囲内です。ただし妊娠時の目安は約200 mg/日、思春期はAAPの指針で定期的なカフェイン摂取は推奨されていません。
複数のDunkinドリンクのカフェイン量を1日でどうやって追跡・合算する？
飲んだサイズと種類を正確に記録してください。CoffeeLog のようなアプリはデータセット値やカスタム入力でmgを合算し、FDAの400 mg/日基準と照らして自動で比較できます。
Bang energy（300 mg）はMedium Dunkinラテで何杯分？
Bang energy（300 mg）はMedium Dunkinラテ約2.5杯分に相当します：300 ÷ 119 ≈ 2.52（データセットの値を使用）。