How much caffeine is in Tim Hortons Original Blend (Medium)?

A medium Tim Hortons Original Blend (10 fl oz / 295 ml) contains 140 mg of caffeine.

This translates to a concentration of roughly 47 mg of caffeine per 100 ml, which is slightly stronger than a typical home-brewed drip coffee (which has about 40 mg per 100 ml). The dose puts it in the moderate range for coffeehouse drinks—more than a single espresso shot but less than many large brewed coffees from other chains. After drinking a medium Original Blend, most people begin to feel alertness within 30 to 60 minutes, with peak stimulation occurring at around 1 to 2 hours. The entire 140 mg dose is equivalent to about 1.5 standard 8-ounce (240 ml) cups of drip coffee, which contain roughly 96 mg of caffeine each, according to the USDA. This level of caffeine typically produces noticeable but manageable stimulation for a regular coffee drinker.

The flavour profile of the Original Blend—a medium-roast with a balanced, smooth taste—does not correlate with caffeine content, as roast level affects flavour more than caffeine. This 140 mg figure represents the typical caffeine content when prepared using the standard brewing process in Tim Hortons restaurants, but slight variations occur from batch to batch. Understanding how this number fits into daily consumption patterns helps consumers make informed decisions about when and how much to drink.

How long Tim Hortons Original Blend (Medium) stays in your system

The caffeine in a medium Tim Hortons Original Blend follows first-order elimination with a population-average half-life of 5.7 hours. This means the body removes half of the caffeine initially present every 5.7 hours. Starting from 140 mg, the remaining amount can be calculated as dose × 0.5^{(hours / 5.7)}. At 3 hours after consumption, about 97 mg of caffeine remains; at 6 hours, 67 mg; at 9 hours, 47 mg; and at 12 hours, just 33 mg. These calculations reflect the exponential decay of the drug based on the known pharmacokinetic profile of caffeine in healthy adults. Because the metabolism rate varies between individuals—due to factors such as liver enzyme activity, genetics, and age—some people may clear caffeine faster or slower, but this model provides a useful average.

If someone drinks a medium Tim Hortons Original Blend at 15:00 (3 p.m.), the 140 mg dose will have declined to approximately 97 mg by 18:00, 67 mg by 21:00, and 33 mg by midnight. Even 33 mg can be enough to interfere with sleep quality for sensitive individuals, as research by Drake et al. (2013) found that 400 mg consumed six hours before bedtime still reduced sleep by over an hour. For a 23:00 bedtime, the lingering caffeine from an afternoon cup could delay sleep onset or reduce deep sleep stages. Using the latest cup before bedtime tool can help personalize the cutoff time based on individual sensitivity and dose. The significant decline over the first six hours highlights why timing matters when consuming caffeinated beverages.

For a healthy adult, the FDA’s guidance of up to 400 mg of caffeine per day (FDA, 2023) means that 2.8 medium Tim Hortons Original Blend cups equal one full daily limit. Two cups (280 mg) fit easily within the recommendation, leaving room for other dietary caffeine sources like tea, soda, or chocolate. Three cups would reach 420 mg, slightly exceeding the guideline, and could increase the risk of jitteriness, increased heart rate, or sleep disturbances. Pregnant individuals should follow the EFSA recommendation of no more than 200 mg per day (EFSA, 2015), making one medium Original Blend already 70% of that cap, leaving limited margin for additional caffeine.

Considering a typical bedtime of 23:00 (11 p.m.), the timing of the last cup becomes crucial for preserving sleep quality. As the half-life calculations show, if a medium Original Blend is consumed at 15:00, about 33 mg remains at midnight. Research published in the Journal of Clinical Sleep Medicine (Drake et al., 2013) demonstrated that even 400 mg taken six hours before bed significantly reduces sleep. Using a more conservative personal threshold—say, keeping bedtime caffeine below 50 mg—suggests that the last medium Original Blend should be finished roughly 8.5 hours before sleep, or by about 14:30 for an 11 p.m. bedtime. The safe daily limit tool can adjust this based on body weight and individual sensitivity.

Adolescents, who may have lower body mass and developing nervous systems, are advised by groups like the American Academy of Pediatrics to limit caffeine to no more than 100 mg per day, meaning a single medium Original Blend already surpasses that ceiling. Likewise, individuals with certain medical conditions (such as anxiety disorders, cardiac arrhythmias, or GERD) may need stricter limits. Caffeine sensitivity also varies genetically; fast metabolizers clear the drug quickly, while slow metabolizers may feel jittery for many hours. Overall, a 140 mg dose is safe for most adults when spaced appropriately, but awareness of timing and cumulative intake is key.

At 140 mg, the medium Tim Hortons Original Blend holds a middle ground among coffee-shop beverages. It contains less than half the caffeine of a Starbucks Pike Place Brewed Grande (473 ml), which packs 310 mg, but more than a single espresso shot (63 mg). Among similar-sized drinks, it is comparable to a Starbucks Caffè Latte Grande (150 mg) and exactly matches the caffeine in a Starbucks Cappuccino Grande (also 150 mg) when adjusted for volume. However, it is notably lower than the Dunkin’ Original Blend Medium (210 mg in 414 ml), which delivers 50% more caffeine per ounce.

When compared to a standard 8-ounce (240 ml) cup of home-brewed drip coffee containing 96 mg, a medium Original Blend provides 46% more caffeine total and a higher concentration (47 vs. 40 mg per 100 ml). For those accustomed to a morning mug of homemade coffee, switching to a Tim Hortons medium will deliver a perceptibly stronger effect. Yet it remains well below the 200 mg single-dose threshold that the European Food Safety Authority (EFSA) identifies as a level of no concern for most adults, placing it in the “moderate” category.

Among all caffeinated beverages, a medium Original Blend has nearly twice the caffeine of a standard 250 ml Red Bull (80 mg) and is slightly less than a 473 ml can of Monster Energy (160 mg). This context is useful when alternating between coffee and energy drinks, as the total daily tally can add up quickly. The side-by-side drink comparison tool allows users to stack multiple drinks and see cumulative caffeine intake. No single 140 mg serving is extreme, but routine consumption of multiple cups raises total exposure, which becomes the primary consideration for health limits.

What changes the number for Tim Hortons Original Blend (Medium)

The caffeine in a Tim Hortons Original Blend depends primarily on the cup size and whether it is the regular or decaf version. The medium size (10 fl oz / 295 ml) delivers 140 mg of caffeine, but smaller and larger servings scale proportionally. The following list provides estimates based on the standard brew concentration:

• Small (8 fl oz / 237 ml): approximately 112 mg
• Medium (10 fl oz / 295 ml): 140 mg (standard)
• Large (16 fl oz / 473 ml): approximately 224 mg

These numbers assume consistent brewing strength and are subject to the inherent variability discussed below. Some locations may use different sizing conventions—for example, a medium in the United States is often 14 fl oz, which would increase the caffeine to nearly 200 mg—so it is wise to confirm the volume with the restaurant.

Decaf Original Blend contains significantly less caffeine. By FDA and USDA standards, decaffeinated coffee must have at least 97% of its caffeine removed, typically leaving between 2 and 15 mg per cup. A medium decaf would therefore provide no more than about 15 mg of caffeine, often closer to 5 mg, which is a trace amount for most adults but still detectable for those who are extremely sensitive.

Batch-to-batch variation in the brewed coffee occurs because natural coffee bean caffeine content can differ by as much as 10–15% depending on the bean origin, season, and roast profile. Tim Hortons maintains a consistent blend, but even under controlled commercial brewing, the caffeine content of a given cup can fluctuate by ±10 mg. Food composition databases like USDA FoodData Central show that brewed coffee from fast-food outlets has a mean caffeine content of about 40–50 mg per 100 ml, consistent with our 47 mg per 100 ml figure. This inherent variability means the 140 mg value is a reliable central estimate, not an exact measurement for every cup.

Other factors that can subtly influence caffeine content include brewing time, water temperature, and grind size. Because Tim Hortons uses calibrated automatic drip brewers, these parameters are standardized across most locations, keeping the variation low. Consumers who are highly sensitive to caffeine might notice differences even within a small range, so recognizing the likely span—perhaps 120 to 160 mg for a medium—can help set realistic expectations.

Where this figure comes from

The caffeine value of 140 mg for a medium Tim Hortons Original Blend comes primarily from the company’s published nutritional information, which is available in-store and on their official website. Fast-food chains periodically update these numbers based on formulation changes, seasonal coffee sourcing, or updated laboratory testing. Other databases, such as the USDA FoodData Central, compile independently tested samples from multiple outlets and may show a range from 120 to 180 mg per 10-ounce serving, reflecting the inherent batch variability. We average or adopt the most current manufacturer-provided data, as it represents the intended product, but we acknowledge that individual cups can deviate by ±10–15%.

Published values can differ because of testing methodology (e.g., HPLC vs. spectrophotometry), bean lot variation, and brewing strength tolerances. The FDA’s 2023 update on caffeine consumption notes that a typical 8-ounce brewed coffee contains 80–100 mg, but concentrations vary. When multiple authoritative sources exist, we default to the brand’s official figure, as it is the most directly accountable. If new information emerges—such as a reformulation or an updated nutrition facts panel—we review and adjust our dataset, which is openly maintained at the open caffeine dataset and open to community contributions. This transparency ensures that the page remains a reliable reference.

Bottom line

A medium Tim Hortons Original Blend (10 fl oz / 295 ml) contains 140 mg of caffeine, which is 35% of the FDA’s daily 400 mg guidance for healthy adults. It delivers a moderate caffeine hit—about 1.5 times a standard cup of drip coffee—and its effects can last for hours, with 33 mg still present after 12 hours. For most people, limiting to two medium cups per day keeps intake within safe bounds, while pregnant individuals should cap at one cup to stay under 200 mg. Timing matters: to minimize sleep disruption, finishing a medium Original Blend by early afternoon (around 14:30) before an 11 p.m. bedtime keeps residual caffeine under 50 mg.

In comparison, a Starbucks Pike Place (310 mg) or a Dunkin’ medium (210 mg) deliver more caffeine; the Original Blend fits a lower-caffeine tier among chain coffees, providing moderate stimulation without excessive jitters. As with all caffeinated products, individual tolerance, body weight, and health status play major roles in the experience. This page will be updated as new data becomes available, ensuring the information stays current.