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Dunkin’ has entered the protein-beverage race with a new lineup that launched on January 7, 2026 — a move that taps into rising demand for higher-protein coffees and Refreshers and even includes a pair of drinks tied to Megan Thee Stallion. For regular customers and on-the-go protein seekers, the key questions are simple: how do these beverages taste, how much protein do they deliver, and are they worth the extra cost?
What’s new — and why it matters now
The chain rolled out a proprietary Protein Milk that supplies roughly 15 grams of protein in a medium drink and promises to be mixed into lattes, matchas and Refreshers. With rivals such as Starbucks and Dutch Bros already selling protein-forward options, Dunkin’s move positions it to capture customers looking for a functional boost with their caffeine fix.
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Availability is national as of the launch date and the Protein Milk is shown as a $1 add-on in the Dunkin’ app. For a short window, the app offered a discount on one of the new Refreshers through January 14, 2026 — a reminder that prices and promotions may vary by market and time.
Which drinks I sampled
I tested five featured drinks: a mango Refresher and a strawberry Refresher (both tied to the protein option), plus three lattes — a Caramel Chocolate Protein Latte, an Almond Protein Matcha Latte, and a Protein Latte with sugar-free vanilla. I ordered the lattes hot because of winter, and kept them unmodified to evaluate the standard recipes.
| Drink | Calories (medium) | Hot/Iced | Price (San Diego, medium) | Quick impression |
|---|---|---|---|---|
| Megan’s Mango Protein Refresher | 300 | Iced only | $5.19 | Bright, tropical; Protein Milk separates but creams up with stirring. |
| Strawberry Protein Refresher | 290 | Iced only | $5.19 | Artificial strawberry edge; dragon fruit note barely present. |
| Caramel Chocolate Protein Latte | 280 | Hot / Iced | $6.69 | Sweet, cloying caramel-chocolate flavor that masks espresso. |
| Almond Protein Matcha Latte | 260 | Hot / Iced | $6.99 | Matcha base solid, but toasted almond pumps push sweetness too far. |
| Protein Latte with Sugar-Free Vanilla | 170 | Hot / Iced | $6.69 | Neutral, lower-calorie option; sugar-free syrup is mild and workable. |
Tasting notes and practical takeaways
The standout across all samples was the protein base itself. Dunkin’s formulation integrated smoothly into milky drinks without leaving the chalky or lingering protein aftertaste common to some competitor products. In lattes, it behaved like a conventional milk swap — mixing evenly and supporting espresso rather than overpowering it.
Refreshers showed a different story. The mango Refresher delivered enjoyable tropical notes and a pleasant creaminess once mixed; it felt like a summer-ready sip despite cold weather. By contrast, the strawberry Refresher leaned artificial, and its aftertaste was the main impression.
The flavored lattes were mixed results. The caramel-chocolate version tasted very sweet, with the flavored syrup dominating the cup and obscuring the coffee. The matcha offered a pleasing earthy backbone but the pre-set toasted almond pumps pushed it toward too-sweet territory — one pump would likely be enough. The sugar-free vanilla latte was the most restrained choice and the best bet for someone counting calories or wanting a subtler flavored coffee.
- Price: expect roughly a $1 upcharge for Protein Milk in a medium drink; regional pricing may differ.
- Texture: blends well in hot beverages; Refreshers may separate and need occasional stirring.
- Customization tip: reduce syrup pumps (especially toasted almond or specialty syrups) to avoid overpowering the base coffee or matcha.
Who should try these?
If you want a protein boost without switching to a shake or powder, adding Dunkin’s Protein Milk to a preferred drink is an easy option — particularly for those who enjoy creamy lattes or matchas. Fans of fruity, creamy iced beverages may like the mango Refresher, while calorie-conscious customers will appreciate the sugar-free vanilla latte.
Conversely, anyone sensitive to artificial fruit flavors should be cautious with the strawberry Refresher. And if you prefer your coffee’s espresso notes to stand out, steer clear of heavily flavored syrups in the caramel-chocolate option.
Bottom line
Dunkin’s Protein Milk is a functional addition that generally performs as intended: it delivers protein without an objectionable texture or pronounced protein taste. The success of individual menu items varies — some flavor combinations work well, others feel over-sweet or artificial — so personal preference will determine which offerings stick in your rotation.
Short-term promos in the app can lower the barrier to trying these drinks; otherwise, consider adding Protein Milk to a familiar favorite and dialing back syrup levels to find the right balance.
