Starbucks Pike Place Brewed (Grande)に含まれるカフェイン量はどれくらい？

A Grande (16 fl oz / 473 ml) Starbucks Pike Place Roast brewed coffee contains 310 mg of caffeine. That works out to 65.5 mg of caffeine per 100 ml, making it one of the most concentrated sources of caffeine on the standard Starbucks menu. The FDA cites 400 mg as the daily limit not typically associated with dangerous, negative effects for healthy adults, and a single Grande Pike Place uses 78% of that guidance in one cup.

This drink delivers more caffeine than three average 8 fl oz cups of drip coffee, which the USDA FoodData Central database pegs at about 96 mg per 240 ml. The caffeine is dissolved directly from the ground coffee during the drip-brew process, so it absorbs quickly. Most people feel the first alerting effects within 15 to 45 minutes, with peak plasma concentration reached roughly 30 to 60 minutes after finishing the cup. Because the dose is substantial, the stimulant effect tends to be pronounced and long-lasting, with a noticeable decline only several hours later.

Starbucks Pike Place Brewed (Grande)が体内にどれくらい残るか

Caffeine elimination in the human body follows first-order kinetics, and the population-average half-life used in clinical guidance is 5.7 hours. For a 310 mg dose, the amount remaining in circulation is calculated as: remaining = 310 × 0.5^(hours / 5.7). At 3 hours post-ingestion, approximately 215 mg is still active. At 6 hours, roughly 149 mg remains. By 9 hours, the figure drops to about 104 mg, and at 12 hours, around 72 mg is still present. These are averages; individual metabolism varies with genetics, liver enzyme activity, and factors like pregnancy or oral contraceptive use, which can double the half-life.

If a person finishes a Grande Pike Place at 15:00, they still have more caffeine in their system at 21:00 (roughly 149 mg) than is found in a whole Grande Starbucks Caffè Latte (150 mg). By midnight, nine hours after the drink, the remaining 104 mg exceeds the total content of a standard 250 ml can of Red Bull (80 mg). This persistent pharmacological load is why a mid-afternoon Pike Place can delay sleep onset and reduce deep sleep, even when the drinker does not feel actively stimulated. The sleep-disruption study by Drake et al. (2013), published in the Journal of Clinical Sleep Medicine, demonstrated that 400 mg of caffeine consumed six hours before bedtime still reduced total sleep time by more than one hour.

A single Grande Pike Place uses 310 mg of the 400 mg daily limit recommended by the FDA and the European Food Safety Authority (EFSA) for healthy, non-pregnant adults. That leaves only 90 mg for any other caffeine source that day—roughly the amount in one 8 fl oz cup of drip coffee or a single shot of espresso with a small margin. Consuming a second Grande Pike Place would bring the total to 620 mg, exceeding the daily guidance by 55% and entering a dose range where the EFSA notes that acute anxiety, tachycardia, and sleep disturbance become more probable.

For a target bedtime of 23:00, the timing of this drink is critical. With a 5.7-hour half-life, the caffeine load at 23:00 is approximately 104 mg if the drink was finished at 14:00, 149 mg if finished at 17:00, and 215 mg if finished at 20:00. To approach bedtime with less than 50 mg of caffeine still circulating—a level below a single shot of espresso—a Grande Pike Place should be finished no later than roughly 13:00. Pregnant individuals are advised by the EFSA to limit total daily intake to 200 mg, making a Grande Pike Place incompatible with that guideline. Adolescents and individuals with slow caffeine metabolism should also treat this as a high-load beverage and consider a smaller size or a lower-caffeine alternative like a Starbucks Cappuccino (Grande) at 150 mg.

Within the Grande brewed-coffee category at Starbucks, Pike Place Roast at 310 mg sits at the top of the range alongside the chain’s other medium and dark roast drip coffees. It contains 105 mg more caffeine than a Grande Starbucks Cold Brew (205 mg), which is steeped for 20 hours but uses a different extraction method and a different coffee-to-water ratio. Compared to espresso-based milk drinks, the gap is even wider: a Grande Pike Place has more than double the caffeine of a Grande Starbucks Caffè Latte (150 mg) or a Grande Starbucks Cappuccino (150 mg), and it surpasses a Grande Starbucks Flat White (195 mg) by 115 mg.

Against a standard home-brewed cup of drip coffee, the Grande Pike Place is equivalent to roughly 3.2 cups. A single shot of standard espresso delivers 63 mg, meaning it would take nearly five shots to match the caffeine in one Grande Pike Place. Even a Starbucks Blonde Espresso shot, which is higher in caffeine at 85 mg per 30 ml due to the lighter roast, requires more than three and a half shots to reach the same total. In the broader quick-service coffee landscape, a Dunkin’ Original Blend Medium (14 fl oz) contains 210 mg, so the Starbucks Grande Pike Place delivers 100 mg more caffeine in a slightly larger serving.

Starbucks Pike Place Brewed (Grande)の数値を左右する要素

The 310 mg figure represents the standard Grande (16 fl oz) serving of Pike Place Roast as brewed in a typical Starbucks store. The actual caffeine content in any single cup can vary. Starbucks itself states that its brewed coffee caffeine values are based on standard brewing conditions, but natural variation in bean density, roast degree, grind size, water temperature, and brew time means the true value for a given cup may swing by 10–15% in either direction. A darker roast like Pike Place loses a tiny fraction of caffeine by mass during roasting compared to a lighter roast, but the difference is small enough that it is rarely perceptible in the cup; the serving size and the coffee-to-water ratio dominate the final number.

Size is the most direct lever. Starbucks brewed coffee is available in Short (8 fl oz), Tall (12 fl oz), Grande (16 fl oz), and Venti (20 fl oz). Because the brewing recipe scales linearly with water volume, a Tall Pike Place contains approximately 235 mg of caffeine, and a Venti contains approximately 410 mg—a dose that exceeds the FDA’s 400 mg daily guidance in a single serving. A Short Pike Place, at roughly 155 mg, is comparable to a Grande Latte.

A decaffeinated version of Pike Place Roast is available, but decaf does not mean caffeine-free. A 16 fl oz cup of Starbucks decaf brewed coffee typically contains between 15 and 25 mg of caffeine, based on published third-party testing and Starbucks’ own disclosures. For someone trying to eliminate caffeine, even a decaf Pike Place contributes a measurable amount.

この数値の出典

The 310 mg value for a Grande Pike Place Roast is sourced from Starbucks Corporation’s published nutritional information, which the company states reflects standard recipes and brewing parameters. Third-party laboratory analyses of Starbucks drip coffee have occasionally reported values ranging from 290 mg to 330 mg for a 16 fl oz serving, a variance consistent with normal batch-to-batch fluctuation in a retail environment. Our dataset uses the manufacturer’s official figure as the anchor point because it is the most reproducible reference available to consumers.

Published caffeine figures can disagree because of differences in analytical methods, sampling time of day, and the inherent variability of agricultural products. We update a drink’s entry when the manufacturer issues a revised formulation, when a new standard serving size is introduced, or when a statistically robust set of independent lab results shows a systematic deviation from the published value. The full methodology and change log are available in the open caffeine dataset behind these pages.

結論

A Grande (16 fl oz) Starbucks Pike Place Roast brewed coffee contains 310 mg of caffeine, which is 78% of the FDA’s 400 mg daily limit for healthy adults. The dose is equivalent to roughly 3.2 standard 8 fl oz cups of drip coffee. With a half-life of 5.7 hours, a person who finishes this drink at 15:00 still has about 149 mg of caffeine active at 21:00—more than a full Grande Latte. Anyone aiming to keep total daily intake under 400 mg should treat this as the dominant caffeine event of the day and time it accordingly.