Muscle Milk
Pro 42g reformulated ultra-filtered milk
Chocolate · 14 fl oz
The current 42g ultrafiltered-milk formula, distinct from legacy 40g Pro.
Amazon listing identified
12 × 14 fl oz · Chocolate
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Price, seller, pack and availability can change. Check the selected flavor and quantity at Amazon before buying. Listing title checked October 13, 2026; delivered formula not physically inspected.
Manufacturer-label research · Reviewed October 13, 2026 · Not hands-on tested
When it belongs on your shortlist
You want to compare a 42g shake whose reviewed label uses stevia rather than sucralose.
The tradeoff to understand
Older 40g Pro Advanced listings remain in search results. This 250-calorie formula belongs only to the named 42g product. Lactose-free status was not established.
What the numbers tell you
The manufacturer label for this chocolate variant lists 42g of protein and 250 calories per 14 fl oz container. That works out to 16.8g of protein per 100 calories, using the rounded label values. This ratio describes the formula; it does not tell you how it tastes or whether it is the best choice for your diet.
The label lists 2g of total dietary fiber. Compare the whole container with other whole containers, and keep the named flavor fixed. Different flavors and product lines can have different nutrition, sweeteners and container sizes.
Ingredients and dietary fit
Protein base in the reviewed manufacturer information: Ultra-filtered milk. This is a summary, not the full ingredient list.
This is a dairy product. We have not established a lactose-free claim for this exact variant.
Sweeteners identified in the reviewed manufacturer information: purified stevia leaf extract, stevia extract. This summary is not a substitute for the full ingredient list, and we do not infer tolerance or health effects from a sweetener name.
Before ordering a multipack
Our Amazon API receipt identifies Muscle Milk Pro High Protein Shake, Chocolate, 14 fl oz Bottles, (12 Pack) | Ultra-Filtered Milk, 42g Protein, 4g Sugar, 250 Calories, No Artificial Flavors, No Artificial Sweeteners, No Added Colors. It confirms a listing title, not the formula of every unit a seller might ship. Verify the selected variation, 12-count quantity, seller and current price at checkout.
A low pack price is only useful when the bottle count matches. Use the pack calculator to compare cost per container and per 25g of protein, including shipping and discounts on the same basis.
Research notes
- PepsiCo label GTIN 00052000068122, manufacturer updated October 01, 2026.
- Do not attach to old Pro 40g or Genuine 25g listings. No artificial sweeteners does not mean unsweetened.
Read the comparison
A better way to compare the pack.
Choose an exact shake or enter your own pack. Add the current checkout price to compare cost per container and per 25g of protein.
Reviewed listing: 12 containers, 42g protein each. Change the count if you choose another pack. View this shake’s label and buying details ↗
Enter a positive price, a whole pack count and the protein amount to compare.
This is your calculation, not a live Amazon quote. Include shipping and applicable discounts consistently. Subscription, coupon and one-time prices are different offers.
Check our sources
Manufacturer information was reviewed October 13, 2026. Formulas can change; your bottle’s label takes priority.