**Iced tea (bottled) caffeine: 45 mg · CoffeeLog**

> Iced tea (bottled) contains 45 mg of caffeine per 355 ml: the decay curve, and how long it takes to fall under the 100 mg sleep threshold.

Source: https://trackcaffeine.com/caffeine-in/iced-tea-bottled/ · updated: 2026-05-28

Iced tea (bottled)

45mg

per 355 ml (12 fl oz) serving

Starts under the 100 mg line.

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3. Iced tea (bottled)

Tea

# How much caffeine is in Iced tea (bottled)?

45mg of caffeine · per 355 ml (12 fl oz) serving

per 100 ml

12.7 mg

≈ cups of coffee

0.5×

Share of the 400 mg daily guidance

11%

Time to half (23 mg)

5.7 h

Time to fall under 100 mg

already under

Source

Food-composition data

A population average for a typical preparation, chiefly from USDA FoodData Central. The real range is wide — the same cup can vary by half again with grind, dose and brew time.

- [How we source every figure](https://trackcaffeine.com/sources/)

**One 355 ml (12 fl oz) bottle contains 45 mg of caffeine.**

Caffeine is a central nervous system stimulant. The bottle’s 45 mg corresponds to a concentration of 12.7 mg per 100 ml as recorded in the TrackCaffeine dataset (
- [/dataset/](https://trackcaffeine.com/dataset/)), and that single bottle represents about 0.5× a standard 240 ml cup of drip coffee (96 mg per 240 ml, as listed in our references; see
- [side-by-side comparison](https://trackcaffeine.com/tools/caffeine-comparison/)). This concentration and equivalence clarify what to expect: 45 mg is a modest stimulant dose for most adults but is enough to change alertness in sensitive people and to add up across a day (TrackCaffeine dataset,
- [/dataset/](https://trackcaffeine.com/dataset/)).

The sensation after drinking 45 mg typically begins within 15–45 minutes and can include increased alertness and mild cardiovascular effects; those onset times are consistent with pharmacokinetic overviews found in public nutrition databases (USDA FoodData Central, https://fdc.nal.usda.gov/). The bottle’s caffeine is measurably active for many hours because caffeine elimination is gradual; see the elimination model below and the calculator at
- [/tools/caffeine-calculator/](https://trackcaffeine.com/tools/caffeine-calculator/) for personalized timing.

*Iced tea (bottled) starts at 45 mg. About 22 mg is still circulating six hours later and 10 mg after twelve — the long tail is why an afternoon drink can still be measurable at bedtime. Free to reuse with a link to this page.*

*Starting from one serving, here is roughly how much caffeine is left as the hours pass (population-average half-life of 5.7 hours).*

| Time | Caffeine left | % left | Vs sleep threshold |
| --- | --- | --- | --- |
| At serving | 45 mg | 100% | below |
| After 1 h | 40 mg | 89% | below |
| After 3 h | 31 mg | 69% | below |
| After 6 h | 22 mg | 49% | below |
| After 9 h | 15 mg | 33% | below |
| After 12 h | 10 mg | 22% | below |

## How long Iced tea (bottled) stays in your system

TrackCaffeine models caffeine elimination as first-order elimination with a population-average half-life of 5.7 hours (TrackCaffeine model,
- [/tools/caffeine-calculator/](https://trackcaffeine.com/tools/caffeine-calculator/)). First-order elimination means remaining = dose × 0.5^(hours / half-life), where the dose is 45 mg (TrackCaffeine dataset,
- [/dataset/](https://trackcaffeine.com/dataset/)).

Applying that formula to this 45 mg dose produces the following arithmetic and results: at 3 hours: 45 × 0.5^(3/5.7) = 45 × 0.6956 ≈ 31 mg (TrackCaffeine dataset,
- [/dataset/](https://trackcaffeine.com/dataset/)); at 6 hours: 45 × 0.5^(6/5.7) = 45 × 0.4823 ≈ 22 mg (TrackCaffeine dataset,
- [/dataset/](https://trackcaffeine.com/dataset/)); at 9 hours: 45 × 0.5^(9/5.7) = 45 × 0.3346 ≈ 15 mg (TrackCaffeine dataset,
- [/dataset/](https://trackcaffeine.com/dataset/)); and at 12 hours: 45 × 0.5^(12/5.7) = 45 × 0.2325 ≈ 10 mg (TrackCaffeine dataset,
- [/dataset/](https://trackcaffeine.com/dataset/)). These numbers match the decay approximations listed for this drink (TrackCaffeine dataset,
- [/dataset/](https://trackcaffeine.com/dataset/)).

For example, if the bottle is finished at 15:00, the model predicts about 31 mg still in the system at 18:00, about 22 mg at 21:00, and roughly 10 mg by 03:00 the next morning (TrackCaffeine model,
- [/tools/caffeine-calculator/](https://trackcaffeine.com/tools/caffeine-calculator/); TrackCaffeine dataset,
- [/dataset/](https://trackcaffeine.com/dataset/)), which can still influence late-evening sleep for some individuals.

## How late can you drink Iced tea (bottled)?

*For Iced tea (bottled) at 45 mg, the last moment it can be drunk and still fall under 100 mg by a 23:00 bedtime. Free to reuse with a link to this page.*

This single 45 mg bottle accounts for 11% of a 400 mg daily guidance for healthy adults (45 mg ≈ 11% of 400 mg; the 400 mg/day guidance is from the U.S. Food and Drug Administration, https://www.fda.gov/consumers/consumer-updates/spilling-beans-how-much-caffeine-too-much). TrackCaffeine records that share as 11% for this serving size (TrackCaffeine dataset,
- [/dataset/](https://trackcaffeine.com/dataset/)).

How many such bottles fit in the 400 mg guidance depends on strict adherence to that limit: 400 mg / 45 mg ≈ 8.9 servings, so roughly nine bottles would reach the FDA's 400 mg/day threshold (TrackCaffeine dataset,
- [/dataset/](https://trackcaffeine.com/dataset/); U.S. FDA, https://www.fda.gov/consumers/consumer-updates/spilling-beans-how-much-caffeine-too-much). Pregnant people are advised to limit caffeine to about 200 mg/day according to the European Food Safety Authority (EFSA, 2015, https://www.efsa.europa.eu/en/efsajournal/pub/4102), making one 45 mg bottle about 22.5% of that 200 mg pregnancy guidance (TrackCaffeine dataset,
- [/dataset/](https://trackcaffeine.com/dataset/); EFSA, 2015, https://www.efsa.europa.eu/en/efsajournal/pub/4102).

For sleep planning, small daytime doses add residual caffeine into the evening: using the half-life model above, a bottle consumed at 18:00 leaves about 22 mg at midnight and about 10 mg by 06:00 (TrackCaffeine model,
- [/tools/caffeine-calculator/](https://trackcaffeine.com/tools/caffeine-calculator/); TrackCaffeine dataset,
- [/dataset/](https://trackcaffeine.com/dataset/)). If aiming for a 23:00 bedtime, our calculator for the latest acceptable cup (
- [/tools/last-cup-before-bed/](https://trackcaffeine.com/tools/last-cup-before-bed/)) can estimate a personalized cutoff based on sensitivity and the 5.7-hour half-life assumption (TrackCaffeine model,
- [/tools/caffeine-calculator/](https://trackcaffeine.com/tools/caffeine-calculator/)).

Adolescents, people with caffeine sensitivity, those on certain medications, and pregnant people should be more cautious: the EFSA pregnancy guidance is 200 mg/day (EFSA, 2015, https://www.efsa.europa.eu/en/efsajournal/pub/4102), and adolescents commonly advised lower intakes in clinical guidance (Mayo Clinic caffeine chart, https://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/in-depth/caffeine/art-20045678). TrackCaffeine provides weight-based limits at
- [/tools/safe-daily-limit/](https://trackcaffeine.com/tools/safe-daily-limit/) for further planning (TrackCaffeine dataset,
- [/dataset/](https://trackcaffeine.com/dataset/)).

## How it compares

*Iced tea (bottled) at 45 mg set against its own category and against the drinks most people use as a mental reference. The dashed lines are the 100 mg sleep threshold and the 400 mg daily guidance. Free to reuse with a link to this page.*

*Every drink in the Tea category in our dataset, with serving size and concentration.*

| Drink | Serving | Caffeine | Per 100 ml |
| --- | --- | --- | --- |
| Iced tea (bottled) | 355 ml | 45 mg | 12.7 |
| [Yerba mate](https://trackcaffeine.com/caffeine-in/yerba-mate/) | 240 ml | 85 mg | 35.4 |
| [Matcha (1 tsp)](https://trackcaffeine.com/caffeine-in/matcha-1-tsp/) | 240 ml | 70 mg | — |
| [English Breakfast tea](https://trackcaffeine.com/caffeine-in/english-breakfast-tea/) | 240 ml | 50 mg | 20.8 |
| [Chai latte](https://trackcaffeine.com/caffeine-in/chai-latte/) | 240 ml | 50 mg | — |
| [Black tea](https://trackcaffeine.com/caffeine-in/black-tea/) | 240 ml | 47 mg | 19.6 |
| [Earl Grey tea](https://trackcaffeine.com/caffeine-in/earl-grey-tea/) | 240 ml | 47 mg | 19.6 |
| [Oolong tea](https://trackcaffeine.com/caffeine-in/oolong-tea/) | 240 ml | 37 mg | 15.4 |

Compared to brewed teas in our dataset, a 355 ml bottled iced tea at 45 mg sits near common black-tea strengths: Black tea (240 ml) is 47 mg, English Breakfast (240 ml) is 50 mg, and Earl Grey (240 ml) is 47 mg (TrackCaffeine dataset,
- [Black tea, 47 mg](https://trackcaffeine.com/caffeine-in/black-tea/) and
- [English Breakfast tea, 50 mg](https://trackcaffeine.com/caffeine-in/english-breakfast-tea/) and
- [Earl Grey tea, 47 mg](https://trackcaffeine.com/caffeine-in/earl-grey-tea/)), which shows the bottle’s concentration is comparable to a typical cup of black tea.

Against coffee, the bottle is substantially lower: a standard 240 ml cup of drip coffee contains 96 mg (TrackCaffeine dataset,
- [/tools/caffeine-comparison/](https://trackcaffeine.com/tools/caffeine-comparison/)), so the bottle’s 45 mg is roughly half a cup of drip coffee on a per-serving basis. Other drinks put this number in context: Green tea (240 ml) is 28 mg and Coca-Cola Coke Zero (355 ml) is 34 mg (TrackCaffeine dataset,
- [Green tea, 28 mg](https://trackcaffeine.com/caffeine-in/green-tea/) and
- [side-by-side comparison](https://trackcaffeine.com/tools/caffeine-comparison/)), so bottled iced tea is higher than many sodas but lower than coffee and specialty high-caffeine beverages like yerba mate (240 ml, 85 mg) (TrackCaffeine dataset,
- [Yerba mate, 85 mg](https://trackcaffeine.com/caffeine-in/yerba-mate/)).

## What changes the number for Iced tea (bottled)

Not every bottled iced tea contains exactly 45 mg; label values, brewing strength, leaf type and added extracts change the number. The 45 mg figure comes from a specific 355 ml sample in the TrackCaffeine dataset (TrackCaffeine dataset,
- [/dataset/](https://trackcaffeine.com/dataset/)), but different brands or batches will vary because manufacturers use different tea extracts and steeping concentrations (USDA FoodData Central, https://fdc.nal.usda.gov/).

Within the tea category, caffeine comes mainly from Camellia sinensis leaves, and the caffeine content scales with the leaf-to-water ratio and extraction method; more leaves or a longer steep raise mg per volume (TrackCaffeine dataset,
- [/dataset/](https://trackcaffeine.com/dataset/)). A bottled iced tea made from a stronger concentrate or a blend with higher-caffeine leaves (for example, yerba mate) will exceed 45 mg per 355 ml, while versions labeled "decaffeinated" typically register near 0–5 mg per serving depending on residuals (TrackCaffeine dataset,
- [/dataset/](https://trackcaffeine.com/dataset/)).

Common sources of within-category variation include:

- Serving size: the dataset entry is 355 ml; larger bottles linearly increase mg (TrackCaffeine dataset, [/dataset/](https://trackcaffeine.com/dataset/)).

- Tea type and blend: black-tea–based iced teas tend to be closer to black tea values, while green or white-leaf blends trend lower (see comparative pages such as [Black tea, 47 mg](https://trackcaffeine.com/caffeine-in/black-tea/) and
- [Green tea, 28 mg](https://trackcaffeine.com/caffeine-in/green-tea/)) (TrackCaffeine dataset,
- [/dataset/](https://trackcaffeine.com/dataset/)).

- Added extracts or guarana: an added extract will contribute its own mg and may not be obvious on label averages (TrackCaffeine dataset, [/dataset/](https://trackcaffeine.com/dataset/)).

Because of these factors, a single public value is an estimate: use the bottle’s own nutrition label when available, and consult our brand guide at
- [Caffeine Content in Popular Iced Tea Brands](https://trackcaffeine.com/guides/caffeine-in-iced-tea-brands/) for brand-specific measurements (TrackCaffeine dataset,
- [/dataset/](https://trackcaffeine.com/dataset/)).

## Your personal caffeine curve

Add another drink

Your half-life · hours Bedtime

In your system now — mg

At bedtime — mg

Latest cup before bed —

Caffeine remaining over time

- [Log it in one tap in CoffeeLog →](https://trackcaffeine.com/app/)

Estimates for general information, not medical advice.

## Where this figure comes from

The 45 mg value is the mean value for a 355 ml sample reported in the open TrackCaffeine dataset (TrackCaffeine dataset,
- [/dataset/](https://trackcaffeine.com/dataset/)), compiled from manufacturer labels and laboratory-measured entries in public food composition sources such as USDA FoodData Central (https://fdc.nal.usda.gov/). Published values differ because manufacturers use different recipes, and independent lab assays measure actual extract concentrations; both kinds of sources are included in our dataset to reflect that real variation (TrackCaffeine dataset,
- [/dataset/](https://trackcaffeine.com/dataset/); USDA FoodData Central, https://fdc.nal.usda.gov/).

We will update this page if manufacturers publish new label values or if new laboratory assays in FoodData Central show different averages; the dataset provenance and versioning are available at
- [/dataset/](https://trackcaffeine.com/dataset/) (TrackCaffeine dataset,
- [/dataset/](https://trackcaffeine.com/dataset/)).

## Questions about Iced tea (bottled)

### Is 45 mg of caffeine a lot?

No: 45 mg per 355 ml is low-to-moderate compared with coffee; it is about 11% of the 400 mg/day FDA guidance (U.S. FDA, https://www.fda.gov/consumers/consumer-updates/spilling-beans-how-much-caffeine-too-much) and roughly half a 240 ml cup of drip coffee (96 mg) (TrackCaffeine dataset, /dataset/).

### Will one bottle affect my sleep?

Possibly: using a 5.7-hour half-life (TrackCaffeine model, /tools/caffeine-calculator/), about 22 mg of the 45 mg remains 6 hours after drinking (TrackCaffeine dataset, /dataset/), and that residual can delay sleep for sensitive individuals (Drake et al. 2013).

### How many bottles equal one cup of coffee?

Approximately two bottles equal one 240 ml cup of drip coffee because 45 mg per bottle × 2 ≈ 90 mg compared with 96 mg for drip coffee (TrackCaffeine dataset, /dataset/; TrackCaffeine comparison, /tools/caffeine-comparison/).

### Is decaf iced tea available?

Yes: decaffeinated tea preparations typically register near 0–5 mg per 240 ml depending on residuals (TrackCaffeine dataset, /dataset/); always check the product label for the brand-specific value (see our brand guide at /guides/caffeine-in-iced-tea-brands/).

### Does brewing method change bottled iced tea caffeine?

Yes: extraction strength, blend and steeping determine mg per volume; a stronger concentrate used in bottling raises mg proportionally (TrackCaffeine dataset, /dataset/), so brand formulation matters more than serving size alone.

### Where did you get the 45 mg number?

The 45 mg value is the measured or reported mean for the specific 355 ml sample in the TrackCaffeine dataset (/dataset/); sources include manufacturer labels and public assay databases such as USDA FoodData Central (https://fdc.nal.usda.gov/).

## Bottom line

One 355 ml bottled iced tea contains 45 mg of caffeine (12.7 mg per 100 ml) according to the TrackCaffeine dataset (
- [/dataset/](https://trackcaffeine.com/dataset/)); that is about 0.5× a 240 ml cup of drip coffee (96 mg per 240 ml) and represents 11% of the 400 mg/day guidance from the U.S. FDA (https://www.fda.gov/consumers/consumer-updates/spilling-beans-how-much-caffeine-too-much). Using a 5.7-hour population half-life (TrackCaffeine model,
- [/tools/caffeine-calculator/](https://trackcaffeine.com/tools/caffeine-calculator/)), roughly 31 mg remains after 3 hours, 22 mg after 6 hours, 15 mg after 9 hours and 10 mg after 12 hours (TrackCaffeine dataset,
- [/dataset/](https://trackcaffeine.com/dataset/)).

CoffeeLog · iOS

## Track this automatically with CoffeeLog

This site answers the question once. CoffeeLog answers it every day — logging what you drink, showing caffeine fade in real time, and telling you the last cup you can have before it reaches your sleep.

- [Download on the App Store](https://apps.apple.com/us/app/caffeine-tracker-coffeelog/id6774424227)
- [Open the calculator](https://trackcaffeine.com/tools/caffeine-calculator/)

## Read next

1. [Yerba mate — 85 mg Tea](https://trackcaffeine.com/caffeine-in/yerba-mate/)
2. [Matcha (1 tsp) — 70 mg Tea](https://trackcaffeine.com/caffeine-in/matcha-1-tsp/)
3. [English Breakfast tea — 50 mg Tea](https://trackcaffeine.com/caffeine-in/english-breakfast-tea/)
4. [Chai latte — 50 mg Tea](https://trackcaffeine.com/caffeine-in/chai-latte/)
5. [Black tea — 47 mg Tea](https://trackcaffeine.com/caffeine-in/black-tea/)
6. [Caffeine half-life calculator Calculators](https://trackcaffeine.com/tools/caffeine-calculator/)
7. [Latest cup before bed Calculators](https://trackcaffeine.com/tools/last-cup-before-bed/)
8. [The caffeine dataset Open caffeine dataset](https://trackcaffeine.com/dataset/)

TrackCaffeine provides general reference information about caffeine. It is not medical advice. Caffeine values are public-source estimates, not exact measurements.

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