A grande Starbucks protein latte has 150mg of caffeine, 27 to 29 grams of protein and 200 to 320 calories depending on the flavor and whether it is hot or iced. That caffeine number matches a regular latte because the espresso is unchanged; the protein comes from the milk. Every number on this page was pulled from the official nutrition data on starbucks.com in July 2026, and the table below covers 14 protein drinks at grande size.
The protein is in the milk, not the espresso
Starbucks added protein lattes and protein cold foam to the permanent menu in late 2025, the first time a protein line has been a standing part of the board rather than a seasonal test. The build is simple: the lattes and matchas use what Starbucks calls Protein-boosted Milk, and the cold foam drinks get a protein cream layer on top of a standard base. Because the caffeine source is the same espresso, matcha or cold brew you already know, the caffeine numbers track the regular versions almost exactly.
That leads to the one number on this page that surprises people. The highest-caffeine protein drink is not a latte. The Iced Vanilla Protein Cream Shaken Espresso carries 255mg in a grande, the standard triple shot of a shaken espresso, plus 19 grams of protein and 410 calories. The protein lattes all sit at a two-shot 150mg. The matcha drinks land between 55 and 75mg, so they are the pick if you want the protein without much caffeine.
On the protein side the ranking flips. The iced matcha drinks lead at 31 grams per grande, the lattes run 27 to 29 grams, and the cold foam drinks trail at 17 to 23 grams because the protein rides in the foam layer instead of the whole cup.
Caffeine, protein and calories by drink (grande)
All values are for a grande as listed on starbucks.com nutrition pages, with no modifications. Sorted by caffeine.
| Drink | Protein (g) | Caffeine (mg) | Calories |
|---|---|---|---|
| Iced Vanilla Protein Cream Shaken Espresso | 19 | 255 | 410 |
| Vanilla Protein Cream Cold Brew | 17 | 205 | 300 |
| Iced Vanilla Protein Latte | 29 | 150 | 270 |
| Iced Caramel Protein Latte | 29 | 150 | 280 |
| Vanilla Protein Latte (hot) | 27 | 150 | 310 |
| Caramel Protein Latte (hot) | 27 | 150 | 320 |
| Iced Sugar-Free Vanilla Protein Latte | 29 | 150 | 200 |
| Iced Sugar-Free Caramel Protein Latte | 29 | 150 | 200 |
| Protein Matcha (hot) | 28 | 75 | 300 |
| Iced Protein Matcha | 31 | 65 | 260 |
| Iced Caramel Protein Matcha | 31 | 65 | 270 |
| Iced Sugar-Free Vanilla Protein Matcha | 31 | 65 | 210 |
| Caramel Protein Matcha (hot) | 28 | 65 | 310 |
| Iced Banana Protein Cream Matcha | 23 | 55 | 400 |
Sizes scale the way you would expect. The Iced Vanilla Protein Latte runs 75mg of caffeine and 210 calories at tall, and 225mg and 390 calories at venti, with protein moving from 22 to 40 grams across the same range. If you are counting any of these numbers, order the size you actually mean rather than defaulting to grande.
For context, the FDA cites 400mg of caffeine a day as an amount generally not associated with negative effects in healthy adults. How caffeine affects you depends on your own tolerance and health, so treat these numbers as information, not advice.
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How these compare to the regular menu
Caffeine-wise there is no protein premium. A grande protein latte at 150mg sits right where a regular grande latte does, and if you want the full breakdown of shot counts across sizes our latte caffeine guide has it. The shaken espresso version keeps the standard three shots covered in our iced shaken espresso caffeine page, and the matcha numbers line up with what we found for the regular drink in the matcha latte caffeine breakdown.
The real difference is the nutrition panel. A regular grande Iced Caffè Latte has 8 grams of protein and 130 calories per Starbucks nutrition data; the protein version more than triples the protein to 29 grams for 140 extra calories, or 70 extra if you go sugar-free. For where every other Starbucks drink lands, the full Starbucks caffeine table is the place to start.
Looking for a different drink? The full caffeine database has every chain and can we have verified.
FAQ
How much caffeine is in a Starbucks protein latte? A grande vanilla or caramel protein latte has 150mg of caffeine, hot or iced, per Starbucks nutrition data. That is the same two-shot espresso base as a regular grande latte.
Which Starbucks protein drink has the most protein? The iced protein matchas lead at 31 grams per grande. If calories matter more, the iced sugar-free protein lattes are the lightest in the lineup at 200 calories with 29 grams of protein.
Which Starbucks protein drink has the most caffeine? The Iced Vanilla Protein Cream Shaken Espresso, at 255mg per grande. The Vanilla Protein Cream Cold Brew is second at 205mg.