How Much Caffeine Is in Starbucks Doubleshot Energy?

Why “Starbucks Doubleshot” Is Confusing (There Are 4 Different Drinks)

If you’ve searched “how much caffeine in a Starbucks Doubleshot” and gotten different numbers from different sources, it’s not because the sources are wrong. It’s because Starbucks sells four completely different drinks under the Doubleshot name — and their caffeine content varies by almost 200mg between the lowest and highest option.

Here’s what actually exists and what each one contains:

The rest of this article breaks down each version in detail so you know exactly what you’re drinking regardless of which Doubleshot you have in front of you.

Starbucks Doubleshot Energy: Caffeine by Flavor and Size

The Doubleshot Energy line is a ready-to-drink canned beverage made with brewed Starbucks coffee, reduced-fat milk, and energy ingredients (guarana, ginseng, B vitamins, taurine). It’s produced by PepsiCo under the Starbucks brand and sold at grocery stores, convenience stores, Walmart, Target, and Amazon nationwide.

Caffeine Content by Can Size (All Flavors)

Caffeine by Flavor — 15 oz Can

This is the question most people are really asking. Mocha vs Vanilla vs Caramel vs White Chocolate — does the flavor change the caffeine? No. Every flavor is identical in caffeine content.

Zero Sugar Versions

Starbucks also offers Doubleshot Energy Zero Sugar variants — Dark Chocolate and French Vanilla. These use sucralose instead of sugar. Caffeine content is the same: 135mg per 15 oz can. Calories drop to approximately 80–90 per can.

Starbucks Doubleshot Espresso (Canned) — Different Drink, Similar Caffeine

The Doubleshot Espresso is a completely different product from the Doubleshot Energy — smaller can, espresso base instead of brewed coffee, no energy ingredients. It’s the older of the two product lines and comes in a 6.5 oz can.

Per ounce, the Doubleshot Espresso is actually more concentrated than the Energy version (~18.5mg/oz vs 9mg/oz) — it’s just served in a much smaller can. Think of it as a concentrated coffee shot vs a full coffee drink.

In-Store Starbucks Doubleshot Caffeine (The Highest of All)

If someone says they had a “Starbucks Doubleshot” and felt significantly more caffeinated than a canned drink would explain, they probably ordered the in-store Doubleshot on Ice — a barista-made drink that contains more caffeine than any canned version.

How Starbucks Doubleshot Energy Compares to Other Caffeinated Drinks

Context matters when reading caffeine numbers. Here’s where the Doubleshot Energy’s 135mg lands relative to drinks most Americans consume daily.

The Doubleshot Energy sits in the moderate caffeine zone — stronger than a standard cup of coffee, weaker than a Red Bull-sized serving of highly concentrated energy drinks like Bang or Celsius. It’s roughly equivalent to 1.5 regular cups of coffee.

What’s Actually in Starbucks Doubleshot Energy (And Why It Hits Differently)

The Doubleshot Energy doesn’t just contain caffeine from coffee. It has a stack of additional energy ingredients that work alongside caffeine — which is part of why it feels stronger than a plain iced coffee with the same caffeine number.

The Energy Ingredient Stack (per 15 oz can)

Is Starbucks Doubleshot Energy Bad for You?

For most healthy adults, one 15 oz can is well within safe limits. The FDA considers up to 400mg of caffeine per day safe for healthy adults — one Doubleshot Energy at 135mg uses 34% of that budget, leaving room for other caffeinated drinks during the day.

That said, there are real considerations worth knowing:

• Sugar: 26–30g of sugar per 15 oz can (depending on flavor) is significant — equivalent to about 6–7 teaspoons. If you’re watching sugar intake, the Zero Sugar versions are the better choice.
• Calories: 190–220 calories per can means it functions more like a snack than a zero-calorie energy drink. Factor it into your daily food budget.
• Caffeine sensitivity: 135mg is enough to cause jitteriness, anxiety, or disrupted sleep if you’re sensitive to caffeine or consume it later in the day.
• Not for everyone: Pregnant women (FDA recommends under 200mg/day), adolescents, and people with heart conditions should consult a doctor before drinking energy drinks regularly.
• Mixing with alcohol: Never recommended — caffeine masks alcohol intoxication signals, leading to dangerous overconsumption.

Complete Starbucks Doubleshot Caffeine Reference Chart

Every number, every type, in one place.

Frequently Asked Questions