Starbucks
How much caffeine is in Starbucks Strawberry Açaí Energy Refresher?
Data checked against the source on 2026-10-03 by Oleksii Y.
One Grande, 16 fl oz of Starbucks Strawberry Açaí Energy Refresher has 125 mg of caffeine, according to Starbucks Coffee Company.
How Starbucks Strawberry Açaí Energy Refresher compares
- Strength: 26 mg per 100 ml.
- One Grande, 16 fl oz has as much caffeine as about 1.5 cups of brewed coffee, which has 94.8 mg per 8 fl oz cup.
How much will be left at bedtime?
1 × Grande, 16 fl oz of Starbucks Strawberry Açaí Energy Refresher
Left at 11:00 PM (8 h later), average metabolism
≈ 41 mg
Range 20–63 mg (fast to slow metabolism)
To be at 50 mg or less by bedtime, have 125 mg by 3:38 PM (average) or 11:40 AM (slow metabolism).
What sleep studies found near this dose
- Gardiner et al. 2023 (meta-analysis): To avoid losing sleep time, the authors suggest a coffee (107 mg per 250 ml) at least 8.8 hours before bed.
- Gardiner et al. 2023 (meta-analysis): For a pre-workout serving (217.5 mg), the authors suggest at least 13.2 hours before bed.
Estimate from a simple model: half-life of 3, 5 or 8 hours, 50 mg bedtime target. How we calculate
Caffeine by size
| Serving | Caffeine |
|---|---|
| Grande, 16 fl oz | 125 mg |
| Tall, 12 fl oz | 100 mg |
| Venti, 24 fl oz | 150 mg |
| Trenta, 30 fl oz | 175 mg |
How long does Starbucks Strawberry Açaí Energy Refresher stay in your system?
Our model halves caffeine every 5 hours for average metabolism, and every 3 or 8 hours for fast or slow metabolism. From one Grande, 16 fl oz of Starbucks Strawberry Açaí Energy Refresher (125 mg), about 63 mg is still in your body 5 hours later and about 31 mg after 10 hours. If you clear caffeine slowly (an 8-hour half-life), about 53 mg is left after 10 hours.
Estimated caffeine left at 11:00 PM from one Grande, 16 fl oz (125 mg), using a half-life of 5 hours for average metabolism and 3 to 8 hours for the range. How we calculate
| Had at | Left at bedtime (average) | Range |
|---|---|---|
| 8:00 AM (15 h before bed) | ≈ 16 mg | 4–34 mg |
| 12:00 PM (11 h before bed) | ≈ 27 mg | 10–48 mg |
| 3:00 PM (8 h before bed) | ≈ 41 mg | 20–63 mg |
| 6:00 PM (5 h before bed) | ≈ 63 mg | 39–81 mg |
How many fit in a day?
Reference amounts are for caffeine from all sources combined. Counted at the upper end of the stated amount, one serving at a time:
- Up to 400 mg a day for most healthy adults (FDA, EFSA): about 3 servings.
- Up to 200 mg at one time for healthy adults (EFSA): about 1 serving in one go.
- Up to 200 mg a day in pregnancy (EFSA, NHS): about 1 serving.
These are reference amounts for groups of people, not a personal limit. Some people feel jittery or sleep worse on much less. See the cutoff calculator for timing.
Good to know
The regular Strawberry Açaí Refresher, without "Energy" in its name, lists 50 mg in a Grande.
Starbucks Strawberry Açaí Energy Refresher vs other Starbucks Refreshers drinks
- Starbucks Strawberry Açaí Refresher: Starbucks Strawberry Açaí Energy Refresher has more caffeine than Starbucks Strawberry Açaí Refresher per Grande, 16 fl oz: 125 mg vs 50 mg.
Common questions
How much caffeine is in Starbucks Strawberry Açaí Energy Refresher?
Starbucks Coffee Company gives 125 mg of caffeine per Grande, 16 fl oz. Other sizes are in the table on this page.
How many Starbucks Strawberry Açaí Energy Refresher servings can I have in a day?
The FDA and EFSA cite up to 400 mg of caffeine a day, from all sources combined, for most healthy adults. At 125 mg per Grande, 16 fl oz, that is about 3 servings if Starbucks Strawberry Açaí Energy Refresher is your only source. In pregnancy the reference is 200 mg a day.
How late can I drink Starbucks Strawberry Açaí Energy Refresher?
With an 11:00 PM bedtime, our model suggests having one serving by about 3:38 PM for average metabolism, or 11:40 AM if you clear caffeine slowly. This is an estimate, not a rule.
Does Starbucks Strawberry Açaí Energy Refresher have more caffeine than Starbucks Strawberry Açaí Refresher?
Starbucks Strawberry Açaí Energy Refresher has more caffeine than Starbucks Strawberry Açaí Refresher per Grande, 16 fl oz: 125 mg vs 50 mg.
How long does Starbucks Strawberry Açaí Energy Refresher stay in your system?
Of the 125 mg in one Grande, 16 fl oz, roughly 63 mg remains after 5 hours and 31 mg after 10 hours with our average 5-hour half-life. From fast to slow metabolism, 10 hours later it is between 12 and 53 mg.
Where the number comes from
- Strawberry Açaí Energy Refresher. Starbucks Coffee Company. Nutrition "Caffeine" field for each size (Tall 100, Grande 125, Venti 150, Trenta 175 mg); page data from /apiproxy/v1/ordering/40500/iced. Accessed 2026-10-02. Source ↗
- Strawberry Açaí Refresher. Starbucks Coffee Company. Nutrition "Caffeine" field for each size (Grande 50 mg); page data from /apiproxy/v1/ordering/2121342/iced. Accessed 2026-10-02. Source ↗
Recipes and labels change. If a number here no longer matches the label, the label wins.
General information, not medical advice
If you feel unwell after caffeine — for example chest pain, a fast or irregular heartbeat that does not settle, fainting, confusion or trouble breathing — get urgent medical help. If you are pregnant or breastfeeding, under 18, take medication, or have a heart, liver or anxiety condition, high blood pressure or a sleep disorder, ask a doctor or pharmacist what amount is right for you.
Sources
- U.S. Food and Drug Administration (2024). Spilling the Beans: How Much Caffeine is Too Much? FDA Consumer Updates. fda.gov ↗
- European Food Safety Authority. Caffeine | EFSA. EFSA topic page (summary of the 2015 Scientific Opinion on the safety of caffeine). efsa.europa.eu ↗
- NHS. Foods to avoid in pregnancy. NHS. nhs.uk ↗
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