# Best Kosher Protein Powder > The best kosher protein powders on Amazon: OU-D whey from brands that state certification, plant picks for after a meat meal, and what OU-D, DE and pareve mean. - **URL**: https://www.best-proteinpowder.com/best-kosher-protein-powder/ - **Updated**: 2026-11-09 - **Author**: [Best Protein Powder Editorial Team](https://www.best-proteinpowder.com/authors/editorial-team/) - **Publisher**: [Best Protein Powder](https://www.best-proteinpowder.com/) --- Kosher dairy whey, plant powders for after a meat meal, and how to read OU-D, DE and pareve markings before you order on Amazon. **How we rank:** We judge every powder on the label, not the marketing: protein per scoop, cost per 25 g of protein, the full ingredient list and third-party testing. No paid placements, and commission never sets a ranking. [Read our methodology](https://www.best-proteinpowder.com/how-we-test/) The best kosher protein powder for most people is NutraBio 100% Whey Protein Isolate, because the brand itself lists OU certification, and as whey it is kosher dairy (OU-D). For baking, Devotion Nutrition states OU-D certification in its FAQ. If you need a shake after a meat meal, choose a plant powder listed as kosher, such as Orgain Plant-Based, and confirm on the tub that the symbol carries no D. ## Our Top Picks | Award | Product | Why | | --- | --- | --- | | Best Kosher Whey Isolate | [NutraBio 100% Whey Protein Isolate](https://www.best-proteinpowder.com/best-kosher-protein-powder/#nutrabio-100-whey-protein-isolate) | The best-documented kosher dairy whey isolate you can order on Amazon. | | Best Kosher for Baking and Flavor | [Devotion Nutrition Angel Food Cake Protein Powder](https://www.best-proteinpowder.com/best-kosher-protein-powder/#devotion-angel-food-cake-protein) | The kosher dairy pick for protein baking and dessert-style shakes. | | Best Budget Plant-Based Kosher | [Orgain Organic Protein Plant-Based Powder](https://www.best-proteinpowder.com/best-kosher-protein-powder/#orgain-organic-protein-plant-based) | The cheapest widely available kosher plant protein, once you confirm the symbol on your tub. | | Best Unflavored Plant Kosher | [NOW Sports Pea Protein (Unflavored)](https://www.best-proteinpowder.com/best-kosher-protein-powder/#now-sports-pea-protein) | A cheap, simple plant protein for pareve shakes, after you check the symbol. | | Best Budget Kosher Dairy | [NOW Sports Whey Protein Isolate (Unflavored)](https://www.best-proteinpowder.com/best-kosher-protein-powder/#now-sports-whey-protein-isolate) | The cheapest unflavored kosher dairy isolate, if the symbol checks out on your tub. | | Best Kosher for Medical Diets | [Unjury Unflavored High Whey Protein Powder](https://www.best-proteinpowder.com/best-kosher-protein-powder/#unjury-unflavored-high-whey-protein) | The kosher option for patients on a bariatric or clinical protein plan. | ## 1. Quick Comparison: The Best Kosher Protein Powders The short version: the best kosher protein powder depends on whether you need dairy or pareve. For dairy, NutraBio 100% Whey Protein Isolate is the clearest choice, because the brand itself lists OU certification, and Devotion Nutrition's FAQ states OU-D certification. For a pareve-style shake after a meat meal, Orgain Plant-Based, which the brand lists as kosher, and NOW Sports Pea Protein are the plant options, but neither brand states pareve in what we found, so read the symbol on the tub. The table shows exactly what each brand or listing says. | Product | Protein per serving | Kosher status (as stated) | Best for | | --- | --- | --- | --- | | NutraBio 100% Whey Isolate | About 25 g | OU, dairy (brand) | Everyday kosher whey | | Devotion Angel Food Cake | About 20 g | OU-D (brand FAQ) | Baking, dessert shakes | | Orgain Organic Plant-Based | 21 g (2 scoops) | Kosher (brand); agency not named | After meat meals, budget | | NOW Sports Pea Protein | About 24 g | Kosher (retail listings) | Unflavored plant base | | NOW Sports Whey Isolate | 24 g | Kosher dairy (retail listings) | Budget, cooking | | Unjury Unflavored Whey | 21 g | Certified kosher (listings) | Bariatric, medical diets | We report kosher status only as the brand or its listings state it at the time of writing. Where a brand names the agency, we name it; where it does not, we say so rather than guess. Certification is per product and sometimes per flavor or plant, so the symbol on the label image of the exact flavor you buy, and on the tub you receive, is what counts. If your community follows a particular agency or standard, confirm the product in that agency's database before you buy. ## 2. The Best Kosher Protein Powders, Ranked These six are ranked first on how clearly kosher status is documented, with brand statements naming an agency above listing claims, then on protein per serving, ingredients and cost per 25 g of protein. We did not run our own lab or taste tests; our [how we test](https://www.best-proteinpowder.com/how-we-test/) page explains the method. Four are dairy and two are plant-based. Kosher status is reported exactly as the brand or listings state it at the time of writing. ### 1. NutraBio 100% Whey Protein Isolate **Award:** Best Kosher Whey Isolate | **Type:** Whey protein isolate (kosher dairy) - **Protein / serving:** About 25 g (brand) - **Calories:** Varies by flavor; see label - **Kosher status:** OU (dairy), per brand - **Best for:** Everyday kosher whey NutraBio is the clearest kosher whey on Amazon, because the brand itself lists OU kosher certification for its whey isolate, and as a milk product it falls under OU-D (dairy). Kosher specialty retailers stock most of its flavors. A scoop gives about 25 g of protein from whey isolate, per the brand at the time of writing, and NutraBio markets full label disclosure, listing every ingredient amount. Check that the OU-D symbol appears on the label image for your flavor, since certification is per product. **Bottom line:** The best-documented kosher dairy whey isolate you can order on Amazon. **Pros:** - Brand states OU kosher certification; dairy, so OU-D - About 25 g of protein per scoop from whey isolate, per the brand - Full label disclosure of ingredient amounts **Cons:** - Dairy, so it cannot follow a meat meal for those who wait - Mid-premium cost per 25 g of protein - Flavor range on Amazon is narrower than on the brand site [Check price on Amazon](https://www.amazon.com/dp/B00MGSYWMQ?tag=sktiger-20&linkCode=ll1) ### 2. Devotion Nutrition Angel Food Cake Protein Powder **Award:** Best Kosher for Baking and Flavor | **Type:** Whey isolate and micellar casein blend (kosher dairy) - **Protein / serving:** About 20 g (label) - **Calories:** About 100-110 - **Kosher status:** OU-D, per brand FAQ - **Best for:** Baking, flavored shakes Devotion's FAQ states its protein powder is certified Kosher OU-D by the Orthodox Union, effective October 2023. The base is roughly 80 percent whey isolate and 20 percent micellar casein, per the label and Amazon listing, for about 20 g of protein in 100 to 110 calories with no added sugar, sweetened with sucralose. The casein makes it behave well in baking, which is what Devotion is known for. Angel Food Cake is the flavor buyers most often recommend. **Bottom line:** The kosher dairy pick for protein baking and dessert-style shakes. **Pros:** - Certified OU-D, per the brand's own FAQ - Whey and casein base holds up in baking - Dessert flavors buyers rate highly **Cons:** - About 20 g of protein per serving, below a typical whey scoop - Sucralose sweetened, which some buyers avoid - Higher cost per 25 g than mainstream blends [Check price on Amazon](https://www.amazon.com/dp/B07CGPHC78?tag=sktiger-20&linkCode=ll1) ### 3. Orgain Organic Protein Plant-Based Powder **Award:** Best Budget Plant-Based Kosher | **Type:** Organic pea, brown rice and chia blend - **Protein / serving:** 21 g per 2 scoops (label) - **Calories:** About 150 - **Kosher status:** Kosher per brand; agency not named - **Best for:** After meat meals, budget Orgain's own site lists its Organic Protein Plant-Based Powder as kosher, though it does not name the certifying agency, so check the symbol on the tub. With no milk or meat ingredients, it is the obvious candidate for a protein shake after a meat meal, provided the symbol carries no D. Per the label at the time of writing, two scoops give 21 g of protein from organic pea, brown rice and chia in roughly 150 calories, sweetened with erythritol and stevia, at a budget-tier cost per 25 g. **Bottom line:** The cheapest widely available kosher plant protein, once you confirm the symbol on your tub. **Pros:** - Brand states it is kosher; plant ingredients only - Budget-tier cost per 25 g in the larger sizes - USDA Organic and dairy-free per the label **Cons:** - Brand does not name the agency or state pareve; read the symbol yourself - 21 g of protein in a large 46 g serving - Pea and rice are kitniyot, which many Ashkenazi Jews avoid on Passover [Check price on Amazon](https://www.amazon.com/dp/B00J074W7Q?tag=sktiger-20&linkCode=ll1) ### 4. NOW Sports Pea Protein (Unflavored) **Award:** Best Unflavored Plant Kosher | **Type:** Single-ingredient pea protein isolate - **Protein / serving:** About 24 g (label) - **Calories:** About 120 - **Kosher status:** Listed as kosher; check symbol - **Best for:** Unflavored plant base NOW's unflavored pea protein has one ingredient, pea protein, and retail listings describe it as kosher, with some retailer images showing a Triangle K mark. We could not confirm the agency from NOW directly, so check the tub. Per the label at the time of writing it gives about 24 g of protein per serving in roughly 120 calories, at a budget-tier cost per 25 g. With no flavor system there is no dairy-derived carrier to worry about, which makes it a sensible base for a pareve shake. **Bottom line:** A cheap, simple plant protein for pareve shakes, after you check the symbol. **Pros:** - Single ingredient, with no milk or meat derivatives - Listed as kosher by retailers - Budget-tier cost per 25 g of protein **Cons:** - Agency and pareve status not confirmed from the brand - Earthy taste; needs a blender and flavoring - Kitniyot for Passover purposes [Check price on Amazon](https://www.amazon.com/dp/B001DB4MFO?tag=sktiger-20&linkCode=ll1) ### 5. NOW Sports Whey Protein Isolate (Unflavored) **Award:** Best Budget Kosher Dairy | **Type:** Unflavored whey protein isolate - **Protein / serving:** 24 g (label) - **Calories:** 110 - **Kosher status:** Listed as kosher dairy; check symbol - **Best for:** Budget, cooking NOW Sports Whey Isolate is the value play among kosher dairy options. Retail listings describe it as kosher with dairy; we could not confirm the agency from NOW, so look for the symbol and the D on the tub. Per the label at the time of writing, the unflavored 5 lb tub lists 24 g of protein in 110 calories per 28 g scoop, with 1 g of carbohydrate and no sweetener. NOW also lists Informed Sport on the label. Unflavored means it goes into coffee, oats and baking. **Bottom line:** The cheapest unflavored kosher dairy isolate, if the symbol checks out on your tub. **Pros:** - 24 g of protein in 110 calories per the label - Budget cost per 25 g in the 5 lb tub - No sweetener, so it works in food **Cons:** - Kosher status from retail listings, not a brand statement we could verify - Plain taste needs flavoring - Dairy, so not for after meat meals [Check price on Amazon](https://www.amazon.com/dp/B0013OWAB4?tag=sktiger-20&linkCode=ll1) ### 6. Unjury Unflavored High Whey Protein Powder **Award:** Best Kosher for Medical Diets | **Type:** Unflavored whey protein isolate - **Protein / serving:** 21 g (label) - **Calories:** About 90 - **Kosher status:** Listed as certified kosher - **Best for:** Bariatric, medical diets Unjury was built for bariatric and medical diets, and its listings describe the whey isolate as certified kosher; the agency is not named in what we found, so check the tub for the symbol and a D. Per the label at the time of writing, a 24 g scoop gives 21 g of protein for about 90 calories with 0 g of carbohydrate or fat. The ingredients are whey protein isolate and soy lecithin. It is meant to be stirred into food and drinks below about 140 degrees Fahrenheit. **Bottom line:** The kosher option for patients on a bariatric or clinical protein plan. **Pros:** - Listed as certified kosher - 21 g of protein in about 90 calories per the label - Designed for surgical and clinical diets **Cons:** - Agency not named in listings we found - Contains soy lecithin - Costs more per 25 g than general-market isolates [Check price on Amazon](https://www.amazon.com/dp/B0176KRX2E?tag=sktiger-20&linkCode=ll1) ## 3. Is Protein Powder Kosher? What the Symbols Mean A protein powder is kosher when a certifying agency has checked its ingredients, its suppliers and the equipment it is made on, and allows the company to print the agency's symbol. There is no government kosher standard in the US; the symbols are trademarks owned by private agencies, and each agency sets its own policies. The symbol is the claim. Words such as kosher in an Amazon title, or kosher-style in a description, are not. ### The common agency symbols The largest US agencies include the Orthodox Union (the U inside a circle, often called OU), OK Kosher (a K inside a circle), Star-K (a K inside a star), Kof-K (a K inside the Hebrew letter kaf) and cRc, the Chicago Rabbinical Council. Triangle K and many regional and international agencies also certify supplements. Which agencies you accept is a question of your community's practice and your rabbi's guidance, not something a buyer's guide can settle; our job is to show you what each product actually carries. ### Dairy, DE and pareve The letters next to a symbol matter more than the symbol for protein powder. A D, as in OU-D, means the product contains dairy ingredients or was made on dairy equipment. Some agencies use DE to flag dairy equipment only, with no dairy ingredient; many people who keep kosher treat DE products as permissible after meat with some restrictions, but practice varies. Pareve, sometimes spelled parve, means the agency considers the product neither meat nor dairy, so it can be eaten with either. An unmarked agency symbol on a plant product often means pareve, but agencies differ in how they mark it, so check rather than assume. ### The plain K A plain capital K on a label is not a trademark, because a single letter cannot be registered. It can mean a reliable agency certifies the product without printing its logo, or it can mean the manufacturer considers the product kosher with no outside supervision at all. If you see only a K, contact the company and ask which agency certifies it. | Marking | What it usually means | Typical protein powder | | --- | --- | --- | | OU-D, or D after another agency symbol | Dairy ingredients or dairy equipment | Whey, casein, milk protein blends | | DE | Dairy equipment, no dairy ingredient | Some plant powders made on whey lines | | Pareve / parve, or symbol alone | Neither meat nor dairy | Pea, rice, egg white powders | | Plain K | No trademark; ask who certifies | Varies | ## 4. Is Whey Protein Kosher? Cheese, Rennet and Dairy Rules Whey can be kosher, but it is one of the harder ingredients for an agency to certify, and it is always dairy. Whey is the liquid left over from cheesemaking. Cheese is often made with rennet, and kosher law has specific rules about cheese production, including supervision of the cheesemaking itself. That means whey is only as kosher as the cheese plant it came from, and an agency certifying a protein powder has to trace the whey back to a supervised or approved source. Agencies do not all apply the same standard to whey, and that is one reason the same raw whey may be acceptable to one agency and not another. The OU and other large agencies certify whey suppliers at the dairy level so that powder brands can buy pre-approved whey, and the OU has written publicly about whey supply shortages as demand for protein products has grown. For a buyer, the consequence is simple: you cannot infer kosher status from the ingredients of a whey powder. Two isolates with identical labels can differ completely on certification. ### Chalav Yisrael Some observant consumers require chalav Yisrael (cholov Yisroel) dairy, meaning milk supervised from milking. Most mainstream US certifications of whey rely on the position that government-regulated milk is acceptable, often called chalav stam, and do not meet a chalav Yisrael standard unless the label says so. We did not find a chalav Yisrael whey protein powder among mainstream Amazon brands; if you keep that standard, look for the explicit marking and ask your agency or rabbi. Casein, milk protein isolate and blends follow the same logic: all dairy, all needing a traceable source. Our [best whey protein isolate](https://www.best-proteinpowder.com/best-whey-protein-isolate/) and [best casein protein powder](https://www.best-proteinpowder.com/best-casein-protein-powder/) rankings cover those categories on nutrition, but not every product in them is kosher certified. ## 5. Pareve Protein Powder: What to Drink After a Meat Meal The practical kosher problem with protein powder is timing. Many people who keep kosher wait a set time after eating meat before eating dairy; customs range from one hour to six, with six hours common. A whey shake is dairy, so a post-workout shake after a meat lunch can be off-limits for most of the afternoon. A pareve protein powder solves that, and it is the main reason kosher-keeping lifters own two tubs. ### Plant proteins Pea, rice, hemp and soy proteins are plant foods and are pareve in principle, but the finished powder needs certification, because flavors, creamers and the production line can introduce dairy. Some plant powders are made on equipment that also runs whey, which can earn a DE marking. Orgain and NOW Sports Pea are both listed as kosher, but neither brand states pareve in what we found, so check the symbol on the tub for a D or DE. Our sibling guide to the [best dairy-free protein powder](https://www.best-proteinpowder.com/best-dairy-free-protein-powder/) covers plant options in depth, though dairy-free and pareve are not the same thing. ### Egg white Eggs are pareve in kosher law, so a certified egg white protein powder is another pareve route with complete, high-quality protein and a neutral taste. Certification is still needed for the finished powder. Our [egg white protein powder](https://www.best-proteinpowder.com/best-egg-white-protein-powder/) guide covers the products on nutrition. ### Collagen and beef protein Collagen and beef protein are more complicated. Bovine collagen and beef isolate come from animal hides and tissue, and whether they are kosher depends on the animal and its slaughter; agencies have taken different positions on collagen and gelatin derived from non-kosher sources. Some fish collagen is certified pareve. If a beef protein were certified, it would be meat rather than pareve, which defeats the purpose after a meat meal. In practice, very few collagen or beef protein powders on Amazon carry mainstream certification, so treat them as uncertified unless the symbol says otherwise. ## 6. Is Kosher Protein Powder Kosher for Passover? Not automatically. Year-round kosher certification and kosher for Passover certification are separate, and a product needs the Passover marking, usually a P next to the symbol or the words kosher for Passover, to be used during the holiday. Note the confusing overlap: on some labels a P after the symbol means Passover, and it never means pareve. Passover rules exclude chametz, leavened grain, and its derivatives, which can appear in protein powders through flavorings, grain alcohol carriers, maltodextrin or other processing aids. Plant protein raises a second Passover question. Many Ashkenazi Jews avoid kitniyot during Passover, a category that includes legumes, rice and corn, and pea, rice and soy protein generally fall under it. Sephardic custom often permits kitniyot. So even a pareve pea protein that is kosher year-round may not suit your Passover practice. Whey and egg white avoid kitniyot but still need a Passover certification to cover their flavors and equipment. The certifying agencies publish Passover guides each year listing approved products and policies on medications and supplements. Kosher for Passover protein powder is rare among mainstream Amazon brands, so many people simply pause their usual powder for the week and lean on eggs, fish, meat and dairy from certified sources. If you rely on protein supplementation for medical reasons, ask your rabbi and your doctor rather than going without. ## 7. Does Kosher Mean a Protein Powder Is Cleaner or Safer? No. Kosher certification answers a religious question: are the ingredients, sources and equipment acceptable under kosher law? It does not test for heavy metals, verify the protein content on the label, screen for banned substances or check for microbial contamination. A kosher whey can be under-dosed on protein, and an uncertified whey can be excellent. The two questions are separate, and you should check both. For quality and safety, look at third-party certifications built for supplements. NSF Certified for Sport and Informed Sport test batches for banned substances and verify label claims; the Clean Label Project and Consumer Reports have published heavy-metal results for specific powders. Our [protein powder without heavy metals](https://www.best-proteinpowder.com/best-protein-powder-without-heavy-metals/) guide summarizes that data, and our [NSF certified protein powder](https://www.best-proteinpowder.com/best-nsf-certified-protein-powder/) list covers the sport certifications. The ideal kosher powder carries both kinds of mark. Kosher is also not the same as halal, although the two overlap in some products and some Muslim consumers accept certain kosher products. Halal certification is issued by separate agencies under different rules, particularly on alcohol-based flavor carriers and animal-derived ingredients. If you need halal, look for a halal mark rather than relying on a kosher symbol. Finally, kosher is not an allergy or diet claim. An OU-D tells you a product contains dairy or was made on dairy equipment, which is useful information for someone avoiding milk, but a pareve symbol is not a guarantee of being free from milk traces for someone with a severe allergy. If you have a food allergy, read the allergen statement and ask the brand, as our [soy-free protein powder](https://www.best-proteinpowder.com/best-soy-free-protein-powder/) guide explains. ## 8. Buying Kosher Protein Powder on Amazon: Finding the Symbol Amazon does not verify kosher claims. Sellers can type kosher into a title or bullet point, and some do so for products that carry no recognized agency symbol at all. For a kosher buyer, the listing text is a starting point for a search, never the evidence. The evidence is the agency symbol on the physical label, which you can usually see in the listing images if you look for it. ### Find the symbol in the label images Scroll through the listing images and zoom in on the front and back of the tub. Kosher symbols are small and often sit near the nutrition panel, the barcode or the bottom of the front label. Check for the letters next to the symbol, D, DE or P, as well as the symbol itself. If the listing images do not show a symbol, look at the brand's website for the current label, and if the symbol is still missing, assume the product is not certified. ### Check flavor, size and seller Certification can be issued per product, per flavor or per manufacturing plant, and Amazon listings group many flavors and sizes under one page. The headline price and photos may belong to a different flavor or size from the one you have selected, so confirm the selection before trusting either. Buy from the brand or from Amazon directly, shown in the Ships from and Sold by lines; third-party resellers are more likely to send old stock with an outdated label, and a product can gain or lose certification between production runs. ### Check the tub, the lot and the date When the tub arrives, read the label again before opening it. Note the lot number and best-by date: if a product's certification has changed, the agency or brand can tell you which lots are covered. Agencies such as the OU and Star-K publish searchable databases and alerts about products sold with unauthorized symbols, and checking the brand name there takes a minute. ### Subscribe & Save and cost per 25 g Subscribe & Save typically saves 5 percent, and up to 15 percent with five or more subscriptions arriving in the same month. Use it once you have confirmed the symbol on a delivered tub, and recheck the label on later deliveries. To compare prices, divide the price by servings, divide by the protein per serving and multiply by 25 to get cost per 25 g of protein; Devotion's 20 g serving and Orgain's two-scoop serving both cost more per gram than they look. Our [protein cost calculator](https://www.best-proteinpowder.com/tools/protein-cost-calculator/) does the math. ## 9. How We Picked We started with protein powders genuinely sold on Amazon US and kept those for which the brand, or at minimum consistent retail listings, state kosher certification at the time of writing. We ranked brand statements naming an agency above listing claims without one, and we say which is which on every product. Within that, we ranked on protein per serving, ingredient simplicity, usefulness for dairy and pareve needs, and cost per 25 g of protein. We did not run lab tests or taste panels. See [how we test](https://www.best-proteinpowder.com/how-we-test/) for our method. We are not a kosher authority, and nothing on this page is a ruling. Several popular powders appeared on unofficial kosher lists without any brand statement we could find, and we left them out rather than guess; Soylent, for instance, says its ready-to-drink shakes carry the OU while its powders are not certified. If you have a medical reason to use protein powder, such as recovery from surgery, our [protein powder for bariatric surgery](https://www.best-proteinpowder.com/best-protein-powder-for-bariatric-surgery/) guide covers that side, and your rabbi can advise on any conflict. ## 10. Common Mistakes to Avoid ### Trusting the word kosher in an Amazon title Amazon does not verify kosher claims, and listing titles can include the word for products with no recognized agency symbol. Find the symbol itself in the label images, check the letters beside it, and confirm the product in the agency's own database if your community follows a particular agency. ### Missing the D next to the symbol OU-D, or a D beside another agency symbol, marks dairy ingredients or dairy equipment. Every whey, casein and milk protein powder is dairy. If you wait after meat before dairy, a dairy-marked shake after a meat lunch can be off-limits for hours. ### Assuming plant-based means pareve Pea and rice protein are plant foods, but flavors, creamers and shared whey equipment can make a finished plant powder dairy or DE. Treat a plant powder as pareve only when its certification says so, not because its ingredients look dairy-free. ### Using year-round certification for Passover Kosher for Passover is a separate certification, usually shown with a P or the words on the label. Pea, rice and soy protein are kitniyot, which many Ashkenazi Jews avoid during Passover. Check your agency's annual Passover guide or ask your rabbi. ### Treating kosher as a quality test Kosher certification does not test for heavy metals, protein accuracy or banned substances. A kosher powder can still be under-dosed or high in lead. Look for NSF Certified for Sport, Informed Sport or published heavy-metal results alongside the kosher symbol. ## 11. Frequently Asked Questions ### What is the best kosher protein powder? NutraBio 100% Whey Protein Isolate is our top pick because the brand itself lists OU certification, which makes it kosher dairy. Devotion Nutrition states OU-D certification in its FAQ and suits baking. For a plant option, Orgain's site lists its Plant-Based Protein as kosher. Confirm the symbol on the exact flavor you buy. ### Is whey protein kosher? Whey can be kosher, but only when an agency certifies the finished powder, because whey comes from cheesemaking and kosher law has rules on cheese production. Kosher whey is always dairy, usually marked OU-D or with a D beside another symbol. You cannot tell from the ingredient list whether a whey is kosher. ### What does OU-D mean on protein powder? OU-D means the Orthodox Union certifies the product as kosher and that it contains dairy ingredients or was made on dairy equipment. For protein powder, it almost always means a whey, casein or milk protein base. People who wait between meat and dairy treat OU-D products as dairy for that purpose. ### Is there a pareve protein powder? Yes. Plant proteins such as pea and rice, and egg white, can be certified pareve, meaning neither meat nor dairy. The finished powder still needs certification, because flavors and shared whey equipment can make it dairy or DE. Check the symbol on the tub; a plant ingredient list alone does not prove pareve status. ### Can I drink a whey protein shake after eating meat? If you keep kosher and wait between meat and dairy, a whey shake counts as dairy, so you would wait your community's customary time, often six hours. A certified pareve plant or egg white powder avoids the wait. Customs vary, so follow your own practice or ask your rabbi. ### Is collagen protein kosher? Some collagen is certified kosher, but it depends on the animal source and slaughter, and agencies differ on collagen and gelatin from non-kosher sources. Some fish collagen is certified pareve. Most bovine collagen powders on Amazon do not carry mainstream certification, so treat them as uncertified unless the label shows a recognized symbol. ### Is kosher protein powder kosher for Passover? Not unless it carries a separate kosher for Passover certification, usually a P beside the symbol or the words on the label. Flavors can contain chametz derivatives, and pea, rice and soy protein are kitniyot, which many Ashkenazi Jews avoid on Passover. Kosher for Passover protein powder is rare on Amazon. ## Related Label and Certification Guides - [Best NSF Certified Protein Powder](https://www.best-proteinpowder.com/best-nsf-certified-protein-powder/): The certifications that test for banned substances and label accuracy. - [Best Dairy-Free Protein Powder](https://www.best-proteinpowder.com/best-dairy-free-protein-powder/): Plant and egg powders with no milk ingredients. - [Protein Powder Without Heavy Metals](https://www.best-proteinpowder.com/best-protein-powder-without-heavy-metals/): What published lead testing shows, brand by brand. ## The Bottom Line Kosher protein powder comes down to the symbol and the letter beside it. NutraBio's whey isolate is the best-documented kosher dairy pick, with OU certification listed by the brand, and Devotion states OU-D for baking. For shakes after a meat meal, Orgain and NOW Sports Pea are plant options listed as kosher, but confirm on the tub that the symbol carries no D. Ignore the word kosher in Amazon titles, find the agency symbol in the label images, buy from the brand or Amazon directly and recheck the tub when it arrives. Kosher certification answers a religious question, not a quality one, so pair it with third-party testing, and take questions of practice to your rabbi. ## More in Safety & Labels Guides in this category that pair with what you just read. - [Is Protein Powder Safe?](https://www.best-proteinpowder.com/is-protein-powder-safe/) - [Best Clean Protein Powder](https://www.best-proteinpowder.com/best-clean-protein-powder/) - [Best Soy-Free Protein Powder](https://www.best-proteinpowder.com/best-soy-free-protein-powder/) - [Best Low FODMAP Protein Powder](https://www.best-proteinpowder.com/best-low-fodmap-protein-powder/) - [Best Whey Protein Isolate](https://www.best-proteinpowder.com/best-whey-protein-isolate/) About the Author [Best Protein Powder Editorial Team](https://www.best-proteinpowder.com/authors/editorial-team/), Supplements Desk The editorial team reads the label, the certificate and the price per gram of protein before a powder gets near a ranking -- and says plainly when a cheaper tub does the same job. [Full profile](https://www.best-proteinpowder.com/authors/editorial-team/) | [How we test](https://www.best-proteinpowder.com/how-we-test/)