# Quest Protein Powder Review > Our Quest protein powder review compares each flavor on protein per calorie and cost per 25 g, and says which tub suits weight loss and who should skip it. - **URL**: https://www.best-proteinpowder.com/quest-protein-powder-review/ - **Updated**: 2026-11-08 - **Author**: [Best Protein Powder Editorial Team](https://www.best-proteinpowder.com/authors/editorial-team/) - **Publisher**: [Best Protein Powder](https://www.best-proteinpowder.com/) --- Quest's whey and casein powder is built for dieters: low sugar, about 110 to 120 calories a scoop and a thick, slow-digesting texture. The flavors are not equal, though. Here is the label maths. **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/) Quest Protein Powder is a sensible weight-loss powder with a reasonable price, and Vanilla Milkshake is the flavor to buy. Its whey isolate and micellar casein blend gives about 24 g of protein for about 110 calories in vanilla, with 1 g of sugar, which is as lean as many pure isolates. But protein per scoop ranges from about 20 g to about 26 g across the line, and Quest's own site showed every powder as sold out when we checked, so where you buy matters as much as what you buy. ## Our Top Picks | Award | Product | Why | | --- | --- | --- | | Best Overall Quest | [Quest Protein Powder, Vanilla Milkshake](https://www.best-proteinpowder.com/quest-protein-powder-review/#quest-protein-powder-vanilla-milkshake) | The Quest to buy for weight loss, and the flavor to buy in the big tub. | | Most Protein per Scoop | [Quest Protein Powder, Salted Caramel](https://www.best-proteinpowder.com/quest-protein-powder-review/#quest-protein-powder-salted-caramel) | The pick if you want the most protein per shake and do not watch your sodium. | | Best Chocolate | [Quest Protein Powder, Chocolate Milkshake](https://www.best-proteinpowder.com/quest-protein-powder-review/#quest-protein-powder-chocolate-milkshake) | A sound chocolate option; just count it as 22 g, not 24 g. | | Best for Flavor Variety | [Quest Protein Powder, Peanut Butter](https://www.best-proteinpowder.com/quest-protein-powder-review/#quest-protein-powder-peanut-butter) | A good second flavor, not a first choice for strict calorie counting. | | Alternative: Leaner Isolate | [Isopure Zero Carb Protein Powder](https://www.best-proteinpowder.com/quest-protein-powder-review/#isopure-zero-carb) | The swap for Quest if every calorie counts and you prefer a thin shake. | | Alternative: More Casein | [Optimum Nutrition Gold Standard 100% Casein](https://www.best-proteinpowder.com/quest-protein-powder-review/#optimum-nutrition-gold-standard-100-casein) | The pick if you want a bedtime or pudding-style protein rather than an all-day shake. | ## 1. The Short Verdict: Lean, Thick and Fairly Priced Quest Protein Powder does one thing well: it delivers a lot of protein for very few calories without tasting like a compromise, according to the bulk of buyer feedback. Vanilla Milkshake lists 24 g of protein in a 31 g scoop for about 110 calories, with 3 g of carbohydrate, 1 g of sugar and essentially no fat. Salted Caramel goes further on protein at about 26 g per 34 g scoop for about 120 calories. Those are isolate-level numbers from a product that uses casein to make shakes thicker and more filling. The caveats are flavor spread and availability. Cinnamon Crunch drops to about 20 g of protein per scoop, Chocolate Milkshake sits at about 22 g, and Peanut Butter is about 23 g for 120 calories. If you pick by taste alone, you might get 20 percent less protein per scoop than you assumed. And when we checked, Quest's direct store listed every powder as sold out, so most buyers will be shopping at grocery chains, Vitacost, Walmart or Amazon. On cost, Quest lands in the affordable middle. At Quest's list prices, the 3 lb tub works out to roughly $1.30 per 25 g of protein and the 1.6 lb tub to roughly $1.80, approximately, and grocery prices we saw were a little lower than list for the small tub. That is cheaper than most premium isolates and a little dearer than budget whey blends. Our label-based verdict: buy Vanilla Milkshake in the 3 lb size if you want Quest for weight loss, buy Salted Caramel if you want the most protein per scoop, and skip Cinnamon Crunch unless you love the flavor. Tested athletes and sucralose avoiders should look elsewhere. Everything here is built from labels, retailer listings and published research; we did not taste or test the powders ourselves. > **THE ONE-LINE ANSWER** > > **Buy Vanilla Milkshake, in the big tub.** > > It has the best protein-per-calorie ratio in the range at about 24 g for 110 calories, the lowest cost per 25 g in the 3 lb size, and the most uses beyond shakes. ## 2. Who Quest Is and What It Sells Quest Nutrition built its name on protein bars in the early 2010s and expanded into chips, cookies, ready-to-drink shakes and powder. Since 2019 it has been owned by The Simply Good Foods Company, which also owns Atkins, so this is a large packaged-food brand rather than a gym-floor supplement company. That shows in the distribution: Quest powder sits on grocery shelves at chains such as Harris Teeter, Ralphs, Stop and Shop and Giant as well as online. The powder range is one formula family in five current flavors on Quest's own site: Vanilla Milkshake, Chocolate Milkshake, Peanut Butter, Salted Caramel and Cinnamon Crunch. Sizes are 1.6 lb for every flavor and 3 lb for Vanilla Milkshake, Chocolate Milkshake and Peanut Butter, plus multi-tub bundles. Quest has sold other variants over the years, including an unflavored mix, but we only cover what Quest currently lists. When we checked Quest's direct store, every powder and every size was marked sold out. That does not mean the product is discontinued; grocery and online retailers were still listing it. But it does mean you should not count on the brand's subscription discount, and you should compare prices across retailers rather than defaulting to the brand site. Quest does not market its powder around sport certifications, and we found no NSF Certified for Sport or Informed Sport listing for it. The labels do carry gluten-free and kosher claims. For most dieters that is fine, but if you are drug-tested in competition, the certification gap is a deal-breaker, and our [whey isolate rankings](https://www.best-proteinpowder.com/best-whey-protein-isolate/) include certified options. ## 3. Why Whey Plus Casein Matters for Dieters Most diet-friendly powders are pure whey isolate, which digests quickly and mixes thin. Quest takes a different route: a blend of whey protein isolate and micellar casein, with milk protein isolate added in some flavors such as Chocolate Milkshake and Peanut Butter. Retail listings describe the Vanilla blend as about 60 percent whey isolate and 40 percent micellar casein, with the whey framed as fast-absorbing and the casein as slow. Why does that matter? Casein forms a gel in the stomach and digests more slowly than whey, which produces a longer, flatter rise in blood amino acids. Studies comparing the two suggest casein-containing shakes can feel more filling for some people, though the effect on actual calorie intake later in the day is modest and varies between studies. The practical upside is texture: casein makes a thicker, more milkshake-like drink, which many dieters find more satisfying than a watery isolate. There are trade-offs. Casein blends mix thicker and can clump if you use too little liquid, and the slower digestion makes no meaningful difference to muscle growth when total daily protein is adequate. If you specifically want a slow protein before bed, a dedicated micellar casein will deliver more of it; our [casein protein powder guide](https://www.best-proteinpowder.com/best-casein-protein-powder/) covers those. For baking and protein recipes, the casein content is an advantage. Casein-heavy blends tend to hold moisture better than pure whey, which is why blends like Quest's are popular in protein pancakes, mug cakes and puddings. If you bake with your protein, Vanilla Milkshake is the most flexible flavor to do it with. ## 4. Every Flavor, Compared on the Label Here is how the five flavors compare per Quest's published labels at the time of writing. The column to watch is protein per 100 calories, which tells you how efficiently each scoop delivers protein inside a calorie budget. | Flavor | Scoop | Protein | Calories | Protein per 100 kcal | | --- | --- | --- | --- | --- | | Vanilla Milkshake | 31 g | 24 g | 110 | About 21.8 g | | Salted Caramel | 34 g | 26 g | 120 | About 21.7 g | | Chocolate Milkshake | 30 g | 22 g | 110 | About 20.0 g | | Peanut Butter | 31 g | 23 g | 120 | About 19.2 g | | Cinnamon Crunch | 30 g | 20 g | 110 | About 18.2 g | Vanilla Milkshake and Salted Caramel are effectively tied at the top on efficiency. Vanilla is the more versatile flavor and comes in the 3 lb tub, which makes it cheaper per gram. Salted Caramel packs the most protein per scoop but has the highest sodium in the range at about 310 mg, versus about 105 mg for vanilla, which is worth knowing if you watch salt. Chocolate Milkshake is a reasonable middle option at about 22 g of protein, with 1 g of fiber and under 1 g of sugar. Peanut Butter adds real peanuts, which gives it about 1.5 g of fat and a peanut allergen warning, and lands at about 23 g of protein for 120 calories. Cinnamon Crunch is the outlier: about 20 g of protein, 5 g of carbohydrate including about 2 g of erythritol, and coconut oil that brings its fat to about 1.5 g, all saturated. If you are buying for flavor variety, there is nothing wrong with keeping a chocolate tub alongside vanilla. Just do your daily protein maths on the real numbers rather than assuming every scoop is 24 g. Our [best-tasting protein powder guide](https://www.best-proteinpowder.com/best-tasting-protein-powder/) looks at flavor-first brands if variety matters more than efficiency. ## 5. The Quest Protein Powder Range, Ranked Quest sells one protein powder formula in several flavors, and the labels differ more than most buyers expect. We rank four of the five current flavors by protein per calorie and versatility, then add two labelled alternatives from other brands. Figures are per Quest's published labels at the time of writing and can change. ### 1. Quest Protein Powder, Vanilla Milkshake **Award:** Best Overall Quest | **Type:** Whey isolate and micellar casein blend - **Protein / serving:** About 24 g (label) - **Calories:** About 110 - **Third-party testing:** No sport certification found - **Best for:** Weight loss, baking Vanilla Milkshake is the most efficient and most versatile flavor in the range. Quest's label lists a 31 g scoop with about 110 calories, 24 g of protein, 3 g of carbohydrate, 1 g of sugar and no fat, from whey protein isolate and micellar casein, sweetened with sucralose and stevia. It comes in the 3 lb size, which brings the cost per 25 g down to roughly $1.30 at list price. **Bottom line:** The Quest to buy for weight loss, and the flavor to buy in the big tub. **Pros:** - About 24 g protein for 110 calories, per the label - 1 g sugar and 0 g fat per scoop - Thick casein texture that buyers find filling - Cheapest per 25 g in the 3 lb tub **Cons:** - Sucralose and carrageenan in the ingredient list - Contains milk and soy; not a pure isolate - No sport certification found [Check price on Amazon](https://www.amazon.com/dp/B07L93HYWV?tag=sktiger-20&linkCode=ll1) ### 2. Quest Protein Powder, Salted Caramel **Award:** Most Protein per Scoop | **Type:** Whey isolate and micellar casein blend - **Protein / serving:** About 26 g (label) - **Calories:** About 120 - **Third-party testing:** No sport certification found - **Best for:** Max protein per scoop Salted Caramel packs the most protein in the Quest range at about 26 g per 34 g scoop for about 120 calories, per the label, with 3 g of carbohydrate and 1 g of sugar. Its efficiency matches Vanilla Milkshake, but it carries the highest sodium in the line at about 310 mg per scoop. It is sold in the 1.6 lb size, at roughly 21 scoops per tub, so it costs more per 25 g than the 3 lb vanilla. **Bottom line:** The pick if you want the most protein per shake and do not watch your sodium. **Pros:** - About 26 g protein per scoop, the most in the range - About 120 calories and 1 g sugar - Same efficient protein-per-calorie ratio as vanilla **Cons:** - About 310 mg sodium per scoop - Only about 21 scoops per 1.6 lb tub - Sucralose and stevia [Check price on Amazon](https://www.amazon.com/s?k=Quest%20Protein%20Powder%2C%20Salted%20Caramel&tag=sktiger-20) ### 3. Quest Protein Powder, Chocolate Milkshake **Award:** Best Chocolate | **Type:** Whey isolate, micellar casein and milk protein isolate - **Protein / serving:** About 22 g (label) - **Calories:** About 110 - **Third-party testing:** No sport certification found - **Best for:** Chocolate shakes on a cut Chocolate Milkshake adds milk protein isolate and alkalized cocoa to the blend. Quest's label lists a 30 g scoop with about 110 calories, 22 g of protein, 3 g of carbohydrate including 1 g of fiber, under 1 g of sugar and 0.5 g of fat. It gives about 2 g less protein per scoop than vanilla for the same calories, which is a modest cost for a chocolate shake. **Bottom line:** A sound chocolate option; just count it as 22 g, not 24 g. **Pros:** - About 110 calories with under 1 g sugar - 1 g fiber per scoop - Sold in 1.6 lb and 3 lb tubs **Cons:** - About 22 g protein, less than vanilla - Sucralose and stevia sweetened - Contains milk and soy [Check price on Amazon](https://www.amazon.com/dp/B07L93HYWV?tag=sktiger-20&linkCode=ll1) ### 4. Quest Protein Powder, Peanut Butter **Award:** Best for Flavor Variety | **Type:** Whey isolate, micellar casein and milk protein isolate - **Protein / serving:** About 23 g (label) - **Calories:** About 120 - **Third-party testing:** No sport certification found - **Best for:** Flavor rotation Peanut Butter uses real peanuts alongside the protein blend. Quest's label lists a 31 g scoop with about 120 calories, 23 g of protein, 2 g of carbohydrate, 1 g of sugar and 1.5 g of fat, with about 200 mg of sodium. It is a little less efficient than vanilla, and it adds a peanut allergen, but it is a useful second tub for buyers who get bored of sweet flavors. **Bottom line:** A good second flavor, not a first choice for strict calorie counting. **Pros:** - Real peanuts in the ingredient list - About 23 g protein and 1 g sugar - Works well blended with banana or oats, per buyers **Cons:** - About 120 calories, slightly less efficient than vanilla - Contains peanuts, milk and soy - Sucralose and stevia sweetened [Check price on Amazon](https://www.amazon.com/dp/B07L93HYWV?tag=sktiger-20&linkCode=ll1) ### 5. Isopure Zero Carb Protein Powder **Award:** Alternative: Leaner Isolate | **Type:** Whey protein isolate - **Protein / serving:** About 25 g - **Calories:** About 100-110 (flavor-dependent) - **Third-party testing:** Check certifier databases - **Best for:** Strict calorie or low-carb diets Isopure Zero Carb is the alternative for dieters who want the leanest possible scoop. It lists about 25 g of protein for roughly 100 to 110 calories with essentially no carbohydrate, from pure whey isolate. It mixes thinner and less filling than Quest because it contains no casein, but it is lower in lactose and slightly more efficient per calorie than any Quest flavor. **Bottom line:** The swap for Quest if every calorie counts and you prefer a thin shake. **Pros:** - About 25 g protein for roughly 100-110 calories - Zero or near-zero carbohydrate and sugar - Pure isolate, low in lactose **Cons:** - Thinner and less filling than a casein blend - No sport certification we could confirm [Check price on Amazon](https://www.amazon.com/dp/B000E95HP0?tag=sktiger-20&linkCode=ll1) ### 6. Optimum Nutrition Gold Standard 100% Casein **Award:** Alternative: More Casein | **Type:** Micellar casein - **Protein / serving:** About 24 g (label) - **Calories:** Check panel (flavor-dependent) - **Third-party testing:** Check certifier databases - **Best for:** Evening shakes, puddings If the thick texture and slow digestion are what you like about Quest, a dedicated micellar casein gives you more of both. Gold Standard Casein is one of the most widely sold options, typically around 24 g of protein per scoop per the label, and it suits an evening shake or a spoonable protein pudding. It is usually a little less efficient per calorie than Quest Vanilla. **Bottom line:** The pick if you want a bedtime or pudding-style protein rather than an all-day shake. **Pros:** - All-casein formula for a slow, thick shake - About 24 g protein per scoop, per the label - Widely available in many flavors **Cons:** - Thicker mix that some buyers find heavy - Slightly more calories per gram of protein than Quest Vanilla [Check price on Amazon](https://www.amazon.com/dp/B002DYJ0PW?tag=sktiger-20&linkCode=ll1) ## 6. Is Quest Protein Powder Good for Weight Loss? For weight loss, the job of a protein powder is simple: deliver a meaningful dose of protein for as few calories as possible, in a form you will actually use. Higher-protein diets help preserve lean mass during a calorie deficit and tend to improve fullness, which is why most evidence-based dieting advice sets protein well above the basic recommended intake. A powder is just a convenient way to get there. By that standard, Quest Vanilla Milkshake does the job well. About 24 g of protein for about 110 calories means roughly 87 percent of its calories come from protein, which is in the same range as many pure isolates. The thicker casein texture is a genuine bonus for dieters who find thin shakes unsatisfying, and 1 g of sugar per scoop keeps it out of the way of a calorie budget. Where Quest helps less is in replacing meals. A single scoop is a protein top-up, not a meal, and drinking 110 calories in place of a 500-calorie lunch will usually backfire by mid-afternoon. A better approach is a scoop blended with milk, fruit or oats as a deliberate high-protein snack, or stirred into Greek yogurt to raise the protein of a breakfast you already eat. Our [best protein powder for weight loss guide](https://www.best-proteinpowder.com/best-protein-powder-for-weight-loss/) ranks Quest's competitors on the same protein-per-calorie measure. If you also use ready-to-drink shakes, our [Premier Protein review](https://www.best-proteinpowder.com/premier-protein-powder-review/) covers another grocery-shelf favorite, and the [protein needs guide](https://www.best-proteinpowder.com/how-much-protein-do-i-need/) will tell you how much of your target a powder realistically needs to cover. As always, weight-loss guidance on this site is general information, not medical advice. If you have kidney disease, diabetes, are pregnant or take medication that affects appetite or metabolism, talk to your doctor or a registered dietitian before raising your protein intake. ## 7. Cost per 25 g of Protein Quest's list prices on its own store were about $40 for a 1.6 lb tub and about $56 for a 3 lb tub, with lower subscription prices when stock is available. Grocery listings we saw for the 1.6 lb tub came in a little lower, around $34. Prices change often, so treat the figures below as approximate. For Vanilla Milkshake, a 1.6 lb tub holds about 23 scoops of 24 g, so at list price it works out to roughly $1.80 per 25 g of protein. The 3 lb tub holds about 44 scoops and brings that down to roughly $1.30 per 25 g. Salted Caramel, sold in the 1.6 lb size at about 21 scoops of 26 g, lands near $1.80 per 25 g at list. | Option | Approx. cost per 25 g | Notes | | --- | --- | --- | | Quest Vanilla, 3 lb | About $1.30 | Best value in the range | | Quest Vanilla, 1.6 lb | About $1.50-1.80 | Lower end at grocery prices | | Quest Salted Caramel, 1.6 lb | About $1.80 | Most protein per scoop | | Isopure Zero Carb | Mid to premium tier | Leaner, pure isolate | That places Quest below most premium isolates and above the cheapest bulk whey blends. For a casein-containing, low-sugar powder sold in grocery stores, it is fair value. The single best saving is buying the 3 lb tub of a flavor you already know you like, which cuts the cost per 25 g by roughly a quarter. If price is your main filter, our [cheap protein powder guide](https://www.best-proteinpowder.com/best-cheap-protein-powder/) and the [Pure Protein review](https://www.best-proteinpowder.com/pure-protein-powder-review/) cover lower-cost grocery-aisle options. ## 8. Sweeteners, Additives and Allergens Every Quest powder we checked is sweetened with a combination of sucralose and stevia. That is how it keeps sugar at about 1 g per scoop while still tasting sweet. If you avoid sucralose, Quest is not for you; if you are fine with it, the sweetener combination is common across diet-focused powders. Beyond sweeteners, the labels list a handful of texture and stability ingredients in amounts under 2 percent: lecithin, cellulose gum, xanthan gum and salt in most flavors, with silicon dioxide and tapioca syrup in Peanut Butter. Vanilla Milkshake also lists carrageenan, a seaweed-derived thickener that some buyers prefer to avoid. Cinnamon Crunch adds erythritol, soluble corn fiber and coconut oil. Allergens are consistent: every flavor contains milk and soy, the soy coming from lecithin, and Peanut Butter adds peanuts. Quest's labels note that the products are made in a facility that also processes eggs, peanuts, sesame, wheat, tree nuts and fish. Anyone with a serious allergy should read the full statement on the tub and, if in doubt, check with their doctor. Because Quest uses whey isolate alongside casein and milk protein isolate, it is not as low in lactose as a pure isolate. Many people tolerate it fine, but if dairy reliably upsets you, a pure isolate is a safer test. Our [whey vs whey isolate explainer](https://www.best-proteinpowder.com/whey-vs-whey-isolate/) covers why. ## 9. Quest vs Isopure, Casein and Other Diet Powders **Isopure Zero Carb** is the leaner alternative: about 25 g of protein for roughly 100 to 110 calories with essentially no carbohydrate, from pure whey isolate. It mixes thinner and contains no casein, so it feels less filling, but it is lower in lactose and slightly more efficient per calorie than any Quest flavor. Our [Isopure review](https://www.best-proteinpowder.com/isopure-protein-powder-review/) covers the line. **A dedicated micellar casein** such as Optimum Nutrition Gold Standard 100% Casein is the alternative if what you like about Quest is the thick texture and slow digestion. It gives you more casein per scoop, which suits an evening shake or a protein pudding. It is usually a little higher in calories per gram of protein than Quest Vanilla. **Mainstream whey blends** such as Optimum Nutrition Gold Standard 100% Whey cost a little less per 25 g and are promoted as Informed Choice certified, but they contain whey concentrate and are not quite as lean. Our [Optimum Nutrition review](https://www.best-proteinpowder.com/optimum-nutrition-protein-powder-review/) compares the range. Quest's niche is the middle of these three: leaner than a whey blend, thicker than an isolate, cheaper than most premium powders, and available in the grocery aisle. If that is the combination you want, it is hard to beat. If one factor matters much more than the others, one of the alternatives probably fits better. ## 10. Who Should Skip Quest Protein Powder **Drug-tested athletes.** We found no NSF Certified for Sport or Informed Sport listing for Quest powder. If you are tested in competition, choose a powder certified for your exact flavor. **Sucralose avoiders.** Every flavor uses sucralose with stevia. There is no Quest powder sweetened with stevia alone or unsweetened in the current range we checked. **People who need the least lactose possible.** The casein and milk protein isolate in Quest's blend make it a less obvious choice for lactose sensitivity than a pure isolate or a plant protein. **Soy or peanut allergy sufferers.** All flavors contain soy lecithin, Peanut Butter contains peanuts, and the facility processes several other major allergens. Check the label carefully and speak to your doctor if you have a serious allergy. For everyone else, and especially dieters who want a thick, low-sugar shake from a store they already visit, Quest Vanilla Milkshake is an easy recommendation. ## 11. Common Mistakes to Avoid ### Assuming every Quest flavor has 24 g of protein Protein per scoop ranges from about 20 g in Cinnamon Crunch to about 26 g in Salted Caramel. If you rotate flavors and count every scoop as 24 g, you can fall short of your daily target by more than you think. Track the real number for the tub you are using. ### Buying the small tub of a flavor you already like The 3 lb Vanilla Milkshake costs roughly a quarter less per 25 g of protein than the 1.6 lb tub at Quest's list prices. Once you know a flavor works for you, the larger size is the single easiest saving. Buy small only when you are testing a flavor. ### Using a scoop as a meal replacement At about 110 calories, a Quest scoop is a protein top-up, not a meal. Replacing a full lunch with one shake often leads to over-eating later. Blend it with milk, fruit or oats, or add it to yogurt, to make a filling high-protein snack instead. ### Mixing with too little liquid The casein in Quest's blend makes it thicker than a pure isolate, and it can clump in a small amount of water. Use at least 8 to 10 fl oz of liquid, add the liquid first, and shake well or use a blender if lumps bother you. ### Overlooking sodium in Salted Caramel Salted Caramel lists about 310 mg of sodium per scoop, roughly three times the vanilla figure. Two scoops a day adds meaningfully to your total. That is fine for most people, but anyone on a sodium-restricted diet should choose vanilla or check with their doctor. ## 12. Frequently Asked Questions ### Is Quest protein powder good? For dieters, yes. Vanilla Milkshake lists about 24 g of protein for about 110 calories with 1 g of sugar, which is as efficient as many pure isolates, and its whey and casein blend makes a thicker, more filling shake. Its weaknesses are sucralose in every flavor, no sport certification we could find, and protein that varies by flavor. ### How much protein is in Quest protein powder? It depends on the flavor. Per Quest's labels at the time of writing, Salted Caramel has about 26 g per scoop, Vanilla Milkshake about 24 g, Peanut Butter about 23 g, Chocolate Milkshake about 22 g and Cinnamon Crunch about 20 g. Calories range from about 110 to 120 per scoop across the range. ### What kind of protein is in Quest powder? Quest uses a blend of whey protein isolate and micellar casein, with milk protein isolate added in some flavors such as Chocolate Milkshake and Peanut Butter. The whey digests quickly and the casein slowly, which gives a thicker shake and a longer release of amino acids. It is not a pure isolate, so it carries a little more lactose. ### Is Quest protein powder good for weight loss? It is a good fit. About 24 g of protein for about 110 calories in vanilla means most of its calories come from protein, and higher protein intake helps preserve muscle and manage hunger in a calorie deficit. Use it as a high-protein snack rather than a meal replacement, and check with a doctor if you have a medical condition. ### What are the best Quest protein powder flavors? On the label, Vanilla Milkshake and Salted Caramel give the most protein per calorie, with vanilla the more versatile and cheaper in the 3 lb tub. Chocolate Milkshake is a reasonable chocolate option at about 22 g of protein. Buyer feedback on taste varies, so start with a small tub before committing to a large one. ### Does Quest protein powder have artificial sweeteners? Yes. Every flavor we checked is sweetened with sucralose alongside stevia, which is how the labels keep sugar at about 1 g or less per scoop. Cinnamon Crunch also contains erythritol. If you avoid sucralose, a stevia-only or unsweetened powder is a better choice than any current Quest flavor. ### Where can I buy Quest protein powder? When we checked, Quest's own store listed every powder as sold out, but grocery chains, Vitacost, Walmart and Amazon were still listing it. Prices vary between retailers, so compare the cost per 25 g of protein rather than the tub price, and buy the 3 lb size when it is available for the best value. ## Related Weight Loss Protein Guides - [Best Protein Powder for Weight Loss](https://www.best-proteinpowder.com/best-protein-powder-for-weight-loss/): Our ranked shortlist by protein per calorie and cost per 25 g. - [Premier Protein Powder Review](https://www.best-proteinpowder.com/premier-protein-powder-review/): The other grocery-aisle favorite, label-checked. - [Best Casein Protein Powder](https://www.best-proteinpowder.com/best-casein-protein-powder/): Slow-digesting powders for evenings and puddings. ## The Bottom Line Quest Protein Powder is a well-designed diet powder: a whey isolate and casein blend that delivers isolate-level protein per calorie with a thicker, more filling texture, sold in grocery stores at a fair price. Vanilla Milkshake in the 3 lb tub is the version to buy, Salted Caramel is the pick for the most protein per scoop, and the other flavors are fine as long as you count their real protein numbers. It is not for tested athletes, sucralose avoiders or people who need the lowest possible lactose. For them, and for anyone who wants to compare Quest against the rest of the field, our [best protein powder for weight loss guide](https://www.best-proteinpowder.com/best-protein-powder-for-weight-loss/) lays out the options. ## More in Brand Reviews Guides in this category that pair with what you just read. - [Best Salted Caramel Protein Powder](https://www.best-proteinpowder.com/best-salted-caramel-protein-powder/) - [Best Peanut Butter Protein Powder](https://www.best-proteinpowder.com/best-peanut-butter-protein-powder/) - [Best Low Carb Protein Powder](https://www.best-proteinpowder.com/best-low-carb-protein-powder/) - [Isopure Protein Powder Review](https://www.best-proteinpowder.com/isopure-protein-powder-review/) - [Pure Protein Powder Review](https://www.best-proteinpowder.com/pure-protein-powder-review/) - [Unjury Protein Powder Review](https://www.best-proteinpowder.com/unjury-protein-powder-review/) 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/)