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The Healthiest Protein Shakes, Graded A to F. Nearly the Whole Aisle Landed in the B Range.

The healthiest ready-to-drink protein shakes are the leaner, cleaner formulas, and the good news is that nearly the whole aisle grades well. Most of our report cards are an exposé. This one isn’t. We graded every ready-to-drink protein shake we could find on the same 6-dimension Labelgrade, and all but one landed in the B range. These are built to do one thing, deliver clean protein in a bottle, and most of them do it well. The twist is at the very top: the plant-based OWYN edged out the dairy favorites everyone reaches for. The gaps between shakes are small and come down mostly to added sugar and ingredients, so this report card is less ‘who failed’ and more ‘how the genuinely-good options separate.’

The verdict

We graded 11 ready-to-drink protein shakes A–F: the category averages 79/100 (B), from 83 (B+) at the top down to 69 (C+) at the bottom.

The plant-based OWYN Pro Elite Chocolate took the top at B+ (83), ahead of Iconic Vanilla Bean at B+ (82) and Fairlife Core Power Elite at B+ (81). Boost High Protein Chocolate came last at C+ (69), the only shake outside the B range, separated on added sugar rather than protein.

Top of the class B+ OWYN Pro Elite Chocolate Shake 83/100
Bottom of the class C+ Boost High Protein Chocolate Sensation Nutritional Drink 69/100

The top picks, with the receipts

#1 OWYN Pro Elite Chocolate Shake B+ 83/100

Pros

  • No added sugar
  • Low sodium at 323 mg
  • Low saturated fat at 1 g

Cons

No dimension scored poorly.

#2 Iconic Vanilla Bean Protein Drink B+ 82/100

Pros

  • Low sodium at 221 mg
  • No saturated fat
  • Clean, short ingredient list

Cons

No dimension scored poorly.

#3 Fairlife Core Power Elite 42g Protein Shake (Chocolate) B+ 81/100

Pros

  • No added sugar
  • Low sodium at 261 mg
  • Low saturated fat at 2 g

Cons

  • Only 2 g fiber

#4 Ensure Max Protein Nutrition Shake, Milk Chocolate B+ 80/100

Pros

  • No added sugar
  • Low sodium at 250 mg
  • Low saturated fat at 0.5 g

Cons

No dimension scored poorly.

#5 Optimum Nutrition Gold Standard 100% Whey Vanilla Shake B+ 80/100

Pros

  • Low sodium at 299 mg
  • No added sugar
  • Low saturated fat at 1.5 g

Cons

  • Only 1 g fiber

Pros and cons come straight from each product’s own label. A dimension is listed only when its sub-score is decisive (78 or above for a pro, 62 or below for a con), so a merely-average number never gets sold as a strength. Every figure is per labeled serving — full panels on each product page.

The full report card — all 11 ready-to-drink protein shakes, ranked

#Ready-to-drink protein shakeGradeScoreWeakest link
1 OWYN — Pro Elite Chocolate Shake B+ 83 fiber (43/100)
2 Iconic — Vanilla Bean Protein Drink B+ 82 fiber (38/100)
3 Fairlife — Core Power Elite 42g Protein Shake (Chocolate) B+ 81 fiber (33/100)
4 Ensure — Max Protein Nutrition Shake, Milk Chocolate B+ 80 fiber (38/100)
5 Optimum Nutrition — Gold Standard 100% Whey Vanilla Shake B+ 80 fiber (32/100)
6 Optimum Nutrition — Gold Standard Protein Shake (Chocolate) B+ 80 fiber (32/100)
7 Premier Protein — 30g Shake (Bananas & Cream) B+ 80 fiber (32/100)
8 Premier Protein — Vanilla High Protein Shake B+ 80 fiber (32/100)
9 Ensure — High Protein Shake, Homemade Vanilla B 75 fiber (31/100)
10 Orgain — Organic Protein Plant-Based Nutritional Shake (Vanilla Bean) B- 74 fiber (34/100)
11 Boost — High Protein Chocolate Sensation Nutritional Drink C+ 69 fiber (30/100)

Worth a closer look

The two ends of the list tell the story. OWYN Pro Elite Chocolate Shake tops the class at 83/100 (B+); Boost High Protein Chocolate Sensation Nutritional Drink anchors the bottom at 69/100 (C+). Click any product for its full fact sheet — the six dimension sub-scores, the per-serving label, and what would move its grade. Prefer to slice it yourself? Filter every graded product by the dimension you care about.

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How we graded these

Each product is scored on six dimensions — protein density, ingredient quality, added sugar, sodium, fiber, and saturated fat — combined into a 0–100 score and a letter grade. Every number comes from the product’s own label, verified against USDA FoodData Central. The grade is absolute (relative to all packaged foods), which is why a whole category can land in the same band. See the full methodology. Last graded 2026-06-04.

Frequently Asked Questions

Which protein shake scored best?

The plant-based OWYN Pro Elite Chocolate topped the list at B+ (83), with Iconic Vanilla Bean at B+ (82) and Fairlife Core Power Elite at B+ (81) right behind. The winners pair strong protein with clean ingredients and little added sugar. See the ranked table above for the exact order and each shake’s weakest dimension.

Why did the Boost shake score lowest?

At C+ (69) it’s the only shake here that fell outside the B range, though that still isn’t a fail. It’s edged out mainly on added sugar and ingredient quality, two of our six dimensions, by the leaner formulas above it. In a category this tight, a few grams of added sugar is what separates the pack.

Are ready-to-drink protein shakes healthy?

As a convenient protein source, yes, and the fact that nearly every shake here landed in the B range backs that up. They’re a reasonable way to hit a protein target on the go. The thing to watch is added sugar, which is what mostly separates the better picks from the rest. The report card keeps that comparison honest.

How is the grade calculated?

Six dimensions — protein density, ingredient quality, added sugar, sodium, fiber, and saturated fat — into a 0–100 score and a letter grade, from each product’s own label, verified against USDA data. See our methodology page.

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