Category Guide
All 10 products tested — including Whey Protein, ISO100, Quest Bars, and Premier Protein — contain dairy. One labeled 'Non Dairy' still has milk protein isolate and caseinates. None are safe for a milk allergy or strict dairy-free diet.
10
Products Covered
0
Safe
10
Contains Dairy
Products in This Guide
✗ Coffee-Mate Original Powder ✗ ISO100 HYDROLYZED PROTEIN POWDER 100% WHEY PROTEIN ISOLATE GOURMET VANILLA ✗ Nutella ✗ Optimum Nutrition Gold Standard Whey ✗ OREO Original ✗ Original Non Dairy Protein Shake ✗ Premier Protein Shake ✗ Quest Protein Bar ✗ Whey Protein ✗ Whipped Topping, OriginalWe tested 10 popular protein supplements against the Ryla database and found dairy in every single one — including a product with "Non Dairy" in its name. If you have a milk allergy or follow a dairy-free diet, none are safe. Below, each product shows where dairy hides and what labeling tricks make it hard to spot.
A protein supplement is dairy-free when its label shows no milk, whey, casein, lactose, or caseinates in any form. The most common dairy sources in protein powders are whey protein — drawn from cow's milk — and casein, the primary milk protein. A product labeled "lactose-free" is not the same as dairy-free; it may still carry casein or whey. Watch for sodium caseinate, calcium caseinate, milk protein isolate, and skim milk powder. All come from dairy, even if they read like chemistry terms rather than food. The clearest sign a product is safe for a dairy-free diet is a certified vegan label.
This product has three separate dairy sources: skim milk, light cream, and sodium caseinate. Sodium caseinate is a milk protein used here as a stabilizer. The skim milk and cream are fluid dairy, while the caseinate is a processed milk derivative. All three appear in the ingredient list, making this product unsuitable for anyone with a milk allergy or following a dairy-free diet. Read our full Whipped Topping, Original dairy analysis.
OREO's ingredient list leads with wheat flour, sugar, palm oil, and cocoa — which looks plant-based on the surface. But Ryla's database confirms this product contains dairy. Cross-contact with milk during production is a known issue across Oreo's manufacturing lines. People with a milk allergy should treat any standard OREO as a dairy product, not just a wheat one. Read our full OREO Original dairy analysis.
Coffee-Mate markets itself as a "non-dairy" creamer, but Ryla flags it as containing dairy-derived ingredients. Sodium caseinate — a milk protein — is a standard component in Coffee-Mate powder formulas. The FDA permits products with caseinates to carry a "non-dairy" label, which creates a labeling gap that catches many shoppers off guard. If you have a milk allergy rather than simple lactose intolerance, "non-dairy" on Coffee-Mate is not a green light. Read our full Coffee-Mate Original Powder dairy analysis.
Nutella's label lists skimmed milk powder at 6.6% and whey powder as distinct ingredients — both direct dairy sources. The skimmed milk powder contributes to Nutella's mild creaminess, while whey powder adds protein structure to the spread. At 6.6%, the milk component is present in a meaningful amount, not just a trace. This product is not safe for people with a milk allergy or anyone following a strict dairy-free diet. Read our full Nutella dairy analysis.
This is the most misleading product in this guide. Despite "Non Dairy" appearing in the product name, the ingredient list shows milk protein isolate, calcium caseinate (milk), and sodium caseinate (milk) — all dairy-derived proteins. The "Non Dairy" label refers to the absence of fluid milk or lactose, not to the absence of all milk proteins. That distinction is exactly the kind of loophole that trips up people managing a milk allergy. This product is not safe for a dairy-free diet or anyone with casein sensitivity. Read our full Original Non Dairy Protein Shake dairy analysis.
This product's name and ingredient list align: whey protein isolate (90%), whey protein concentrate (80%), and hydrolyzed whey protein isolate are all extracted from cow's milk during cheese production. Unlike Coffee-Mate's caseinate loophole or the mislabeled "Non Dairy" shake, there's no trick here—the dairy source is clearly declared. Hydrolysis breaks whey into smaller peptides for faster muscle absorption but doesn't eliminate the allergenic proteins from milk. If you see straight whey listed, you know exactly what you're getting: a dairy product, off-limits for both milk allergy and lactose intolerance. Read our full Whey Protein dairy analysis.
ISO100's name implies a highly processed product, and technically it is—the "isolate" on the label means lactose and most fat have been removed from the whey. The "hydrolyzed" descriptor means the protein chains are broken into smaller pieces for faster absorption. But both processing steps occur while the protein is still whey from milk. Isolate removes dairy's lactose and fat, not its allergenic proteins—whey allergens remain intact. Anyone with a milk allergy should treat isolate and concentrate identically: both are still dairy. The minor ingredients (soy lecithin, salt, sucralose, steviol glycosides) are dairy-free, but they don't change the fact that the functional ingredient—whey—is milk-derived. Read our full ISO100 dairy analysis.
Optimum Nutrition's Gold Standard Whey is one of the best-selling protein powders globally—and its dominance is partly due to cost and availability. Whey protein isolate, concentrate, and peptides are inexpensive to extract from milk byproducts (cheese production), making whey-based supplements affordable and widely stocked. That accessibility works against people on a dairy-free diet: this product is ubiquitous in gyms, supermarkets, and online retailers, making it easy to grab without checking the label. The sheer market presence of whey products means many shoppers don't realize milk protein is the default choice for most mainstream supplements. If you need plant-based protein, you'll have to actively search for alternatives; Gold Standard will be the most visible option. Read our full Gold Standard Whey dairy analysis.
Quest Protein Bars anchor their high-protein, low-carb formula on milk protein isolate and sometimes whey concentrate—both dairy. The bar format changes texture compared to shakes, but not the dairy load: a single Quest bar delivers substantial milk protein per serving. Flavor variations matter too: some bars use milk protein isolate alone, while others layer in calcium caseinate or whey concentrate, multiplying the dairy sources. This makes Quest bars a high-risk choice for people managing milk allergies, especially if rotating between flavors without checking each label individually. The low-carb positioning attracts keto dieters, some of whom assume the bars are vegan-friendly without checking—worth noting if that describes your shopping habits. Read our full Quest Protein Bar dairy analysis.
Premier Protein Shakes deliver 30 grams of protein per 11 oz serving through a milk protein blend—a formula designed for people tracking macros (30g protein, low carbs, low fat). That macro profile has made these shakes popular in fitness and bodybuilding communities where macro precision matters. The protein source is dairy, not incidental or trace. The shakes may be tolerable for people with lactose intolerance (milk proteins are often easier to digest than fluid milk lactose), but anyone with casein or whey sensitivity, or following a strict dairy-free diet, should avoid them. The convenience and macro label appeal of Premier Protein masks the fact that its entire protein foundation is milk-derived. Read our full Premier Protein Shake dairy analysis.
Dairy appears under many names on supplement labels. The main ones to know: whey, casein, caseinate, milk protein isolate, milk protein concentrate, lactalbumin, lactoglobulin, lactose, and skim milk powder. A "may contain milk" or "made in a facility with milk" statement signals cross-contact risk — this matters for milk allergy, not just lactose intolerance. "Non-dairy" does not mean milk-free; as shown by Coffee-Mate and the Original Non Dairy Protein Shake in this guide, caseinates can legally appear in non-dairy products. The most reliable label signal for a truly dairy-free product is a certified vegan claim. Use the Ryla app to scan any barcode and get an instant dairy verdict — no label parsing required.
None of the products reviewed here are safe for a dairy-free diet. For protein without dairy, focus on plant-based sources: pea protein, brown rice protein, hemp protein, and soy protein are all naturally free of milk, whey, and casein. Brands like Vega, Garden of Life, and Orgain make certified vegan protein powders with no dairy-derived ingredients. For protein bars, RXBAR (egg white base), Larabar (nut base), and select Kind bars are worth checking. Always prioritize a "vegan" certification over "lactose-free" or "non-dairy" — it gives stronger protection for people with a milk allergy. When buying in-store, use the Ryla app to scan barcodes and confirm dairy status as part of your dairy-free protein supplements routine before anything goes in your cart.
You may also want to check our analysis of does original non dairy protein shake contain dairy.
Coffee-Mate Original Powder Contains
Read full analysis →ISO100 HYDROLYZED PROTEIN POWDER 100% WHEY PROTEIN ISOLATE GOURMET VANILLA Contains
Read full analysis →Nutella Contains
Read full analysis →Optimum Nutrition Gold Standard Whey Contains
Read full analysis →OREO Original Contains
Read full analysis →Original Non Dairy Protein Shake Contains
Read full analysis →Premier Protein Shake Contains
Read full analysis →Quest Protein Bar Contains
Read full analysis →Whey Protein Contains
Read full analysis →Whipped Topping, Original Contains
Read full analysis →No. Most mainstream protein supplements use whey, casein, or milk protein isolate as their base — all are dairy-derived. Of the 10 popular products reviewed in this dairy-free protein supplements guide, all 10 contain dairy. To find a genuinely dairy-free option, look for products made with pea, rice, hemp, or soy protein and certified vegan. See also our does original non dairy protein shake contain dairy for comparison.
Not fully. The FDA allows products containing sodium caseinate or calcium caseinate — both milk proteins — to carry a 'non-dairy' label. One product in this guide is called 'Original Non Dairy Protein Shake' but lists milk protein isolate and caseinates in its ingredients. If you have a milk allergy, look for 'vegan' or 'dairy-free' rather than 'non-dairy.' See also our whey protein and dairy for comparison.
Collagen supplements are made from animal connective tissue — typically bovine (cow) hide, fish scales, or chicken cartilage. Most plain collagen powders do not contain dairy, but some flavored or blended collagen products add whey protein or milk powder. Always check the full ingredient list before assuming a collagen supplement fits a dairy-free diet.
Amino acid supplements provide specific protein building blocks — like BCAAs (leucine, isoleucine, valine) or essential amino acids (EAAs). Most plain amino acid powders are dairy-free, but some blends use whey-derived amino acids. Check the source on the label: fermented or synthetic amino acids are dairy-free, while whey-derived versions are not.
Type I collagen is the most common collagen in the body, found in skin, tendons, and bones. Type I collagen supplements typically come from bovine or fish sources and are usually dairy-free. Some products mix Type I collagen with whey protein to boost amino acid profiles — making them unsuitable for people with a milk allergy or on a dairy-free diet.
Probiotic supplements deliver live beneficial bacteria — typically strains like Lactobacillus or Bifidobacterium — to support gut health. Most probiotic capsules are dairy-free, but some are cultured on a dairy growth medium or blended with whey protein. Check the label for milk-derived ingredients, especially in probiotic protein blends.
Purslane supplements are derived from purslane, a succulent plant high in omega-3 fatty acids and antioxidants. As a plant-based ingredient, purslane is naturally dairy-free. Standalone purslane supplements carry no dairy risk, but always check for milk-derived additives in any blended supplement formula.
Legacy Supplements is a brand that produces pre-workout powders, protein blends, and amino acid supplements. Some of their protein products use whey as the protein source and contain dairy. Check the specific product label using the Ryla app to confirm whether a given Legacy Supplements product is safe for a dairy-free diet before purchasing.