Oikos Protein Shake vs Premier Protein (2026): Same 30g Protein — Which Shake Wins on Sweeteners, Fiber and Price?

Oikos built its name on Greek yogurt and Premier Protein built its name on shakes, so when Oikos put a 30g shelf-stable protein shake on the same aisle, the obvious question was whether it beats the shake people already buy. On the two numbers most shoppers check first, it is a dead heat: 30g of protein, 1g of sugar and 0g of added sugar in every flavor of both. The differences are further down the label, in the sweetener, the fiber, the fat and the vitamins, and they point different people to different bottles. Below is every flavor matchup, the full panels side by side, what each costs, and which one to buy for your goal.

Affiliate links — if you buy through them we earn a small commission at no extra cost to you. Every nutrition figure below comes from the manufacturer’s own published nutrition panel, read on oikos.com and premierprotein.com on September 13, 2026, per the serving each brand prints.

The Quick Verdict: Oikos vs Premier Protein, Flavor by Flavor

Both brands make a chocolate, a vanilla, a caramel and a coffee shake, so the fair comparison is flavor against flavor. Protein and sugar are tied on every line, so the table shows where they are not.

The pattern holds across all four. Premier is 10 to 20 calories lighter in every flavor. Oikos carries 5g to 6g of fiber in every flavor, where Premier carries 0g to 2g. The sweetener splits them the same way everywhere: every Oikos shake is sweetened with stevia extract, and every Premier shake we read lists sucralose and acesulfame potassium.

Which Has More Protein: Oikos or Premier Protein?

Neither. Every Oikos Protein Shake and every classic Premier Protein shake we read lists exactly 30g of protein per bottle, 60% of the daily value. Both get it from milk: Oikos from milk protein concentrate and micellar casein isolate, Premier from milk protein concentrate and calcium caseinate, so both are complete dairy proteins. Measured as protein per 100 calories, Premier edges ahead at 18.8g against 16.7g to 17.6g for Oikos, only because Premier has fewer calories. If you want more than 30g in one bottle, only Premier makes it: its Ultimate 42g Chocolate lists 42g of protein in a 14 fl oz bottle for 220 calories.

Chocolate: Oikos vs Premier Protein

Oikos Protein Shake, Chocolate

30g protein · 180 cal · 4g fat (2.5g saturated) · 9g carbs · 6g fiber · 1g sugar (0g added) · stevia extract · 720mg calcium (60% DV) · 12 fl oz bottle

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The Oikos Chocolate panel lists 180 calories, 30g of protein, 4g of fat (2.5g saturated), 25mg of cholesterol, 240mg of sodium, 9g of carbohydrate, 6g of dietary fiber and 1g of total sugar with 0g added. It adds 720mg of calcium (60% of the daily value), 4mcg of vitamin D (20%), 180mcg of vitamin A (20%), 1.3mg of iron and 370mg of potassium. The ingredient list is short: filtered water, milk protein concentrate, micellar casein isolate and inulin, then less than 1% of cocoa powder, coconut oil and high oleic sunflower oil, natural flavors, potassium citrate, sea salt, stevia extract, gellan gum, sunflower lecithin, vitamin A palmitate and vitamin D3.

Premier Protein Shake, Chocolate

30g protein · 160 cal · 3g fat (1g saturated) · 4g carbs · 2g fiber · 1g sugar (0g added) · sucralose and acesulfame potassium · 650mg calcium (50% DV) · 11 fl oz carton or 11.5 fl oz bottle

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Premier Chocolate lists 160 calories, 30g of protein, 3g of fat (1g saturated), 15mg of cholesterol, 230mg of sodium, 4g of carbohydrate, 2g of fiber and 1g of total sugar with 0g added. Its vitamin and mineral list is much longer than Oikos’s: 6mcg of vitamin D (30%), 650mg of calcium (50%), 2.7mg of iron (15%), plus vitamins A, C, E and K, the B vitamins, zinc, selenium, copper, manganese, chromium and molybdenum, which Premier markets as “24 vitamins and minerals.” The panel is the same for the 11 fl oz carton and the 11.5 fl oz bottle. The ingredient list runs longer too: filtered water, milk protein concentrate, calcium caseinate and cocoa powder, then less than 1% of sunflower or soybean oil, natural and artificial flavors, cellulose gel and gum, salt, sucralose, acesulfame potassium, carrageenan, three phosphate salts and the vitamin blend. Premier’s label says it contains milk and soy.

The honest catch, on both: the Oikos bottle carries 20 more calories and 1.5g more saturated fat, with coconut oil on its ingredient list, and its 9g of carbohydrate looks high until you subtract the 6g of fiber, which leaves 3g, against 2g for Premier. The Premier carton is lighter on every macro line but relies on two artificial sweeteners and carrageenan, and it lists soy as an allergen. If your only question is calories per 30g of protein, Premier wins this matchup. If you read the ingredient list, Oikos is the shorter one.

Vanilla: Oikos vs Premier Protein

Oikos Protein Shake, Vanilla

30g protein · 170 cal · 3.5g fat (2.5g saturated) · 8g carbs · 5g fiber · 1g sugar (0g added) · stevia extract · 210mg sodium · 12 fl oz bottle

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Oikos Vanilla lists 170 calories, 30g of protein, 3.5g of fat (2.5g saturated), 25mg of cholesterol, 210mg of sodium, 8g of carbohydrate, 5g of fiber and 1g of total sugar with 0g added, plus the same 720mg of calcium, 4mcg of vitamin D and 180mcg of vitamin A as the chocolate. The ingredient list is the chocolate list without the cocoa: filtered water, milk protein concentrate, micellar casein isolate, inulin, then less than 1% of coconut and high oleic sunflower oil, natural flavors, potassium citrate, sea salt, gellan gum, stevia extract, sunflower lecithin and vitamins A and D3. The label’s only allergen is milk.

Premier Protein Shake, Vanilla

30g protein · 160 cal · 3g fat (0.5g saturated) · 3g carbs · 0g fiber · 1g sugar (0g added) · sucralose and acesulfame potassium · 250mg sodium · 11 fl oz carton

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Premier Vanilla lists 160 calories, 30g of protein, 3g of fat (0.5g saturated), 20mg of cholesterol, 250mg of sodium, 3g of carbohydrate, 0g of fiber and 1g of total sugar with 0g added, with the same vitamin and mineral blend as the chocolate. The ingredients are the chocolate list without the cocoa, including sucralose, acesulfame potassium, natural and artificial flavors and carrageenan.

The honest catch: vanilla is where the fiber gap is widest, 5g against 0g. Fiber helps a shake feel more filling, but the fiber in Oikos is inulin, a fermentable fiber. In a 2014 placebo-controlled trial of healthy adults, 5g and 7.5g a day of agave inulin produced slight increases in bloating and gas, though overall stomach upset stayed low. One Oikos shake lists 5g to 6g of fiber, with inulin as its only added fiber ingredient; if you already know chicory-root or inulin fiber bothers you, Premier Vanilla, with no added fiber, is the safer bottle.

Coffee: Oikos Mocha Latte vs Premier Café Latte

Oikos Protein Shake, Mocha Latte

30g protein · 180 cal · 95mg caffeine · 4g fat (2.5g saturated) · 10g carbs · 6g fiber · 1g sugar (0g added) · stevia extract · 12 fl oz bottle

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Oikos Mocha Latte lists 180 calories, 30g of protein, 4g of fat (2.5g saturated), 240mg of sodium, 10g of carbohydrate, 6g of fiber and 1g of sugar with 0g added. Oikos states the caffeine as a number: 95mg per bottle, which the brand describes as the same as one cup of coffee. The ingredient list includes coffee extract, coffee fruit extract and cocoa powder, and the sweetener is still stevia alone.

Premier Protein Shake, Café Latte

30g protein · 160 cal · caffeine (no milligram figure published) · 3g fat (1g saturated) · 4g carbs · under 1g fiber · 1g sugar (0g added) · sucralose and acesulfame potassium · 11 fl oz carton

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Premier Café Latte lists 160 calories, 30g of protein, 3g of fat (1g saturated), 20mg of cholesterol, 260mg of sodium, 4g of carbohydrate, less than 1g of fiber and 1g of sugar with 0g added. Coffee extract and added caffeine are both on the ingredient list, and Premier says the shake has “the same caffeine as a cup of coffee,” but its product page does not print a milligram figure.

The honest catch: if you track caffeine, only one of these tells you the number. Oikos prints 95mg; Premier gives you a comparison instead of a figure, so you are estimating. On everything else this matchup repeats the others: Premier is 20 calories lighter, Oikos has 5g or more of extra fiber and no artificial sweeteners.

Full Comparison: Every Flavor We Read

Each product on the serving the brand prints. Protein per 100 calories is our arithmetic from the label figures.

Two things stand out once the rows sit together. First, the carbohydrate gap is mostly fiber: subtract fiber from carbohydrate and every Oikos flavor is left with 3g to 4g, against 2g to 4g for Premier. Second, the salted and caramel flavors are the saltiest on both sides, 380mg for Oikos Salted Caramel and 350mg for Premier Caramel, so if you are watching sodium, the vanilla of either brand is the better pick.

One naming trap: Oikos also sells Oikos Pro drinks, which are a different product. The Oikos Pro Peach drink, for example, is a 7 fl oz cultured dairy drink with 120 calories and 23g of protein. The 30g, 12 fl oz bottle in this comparison is the one labeled “Oikos Protein Shake.” For the yogurt-cup side of the brand, see our Oikos Pro nutrition facts.

Is Oikos or Premier Protein Healthier?

Oikos is the healthier pick if your concern is the ingredient list: one sweetener (stevia), 5g to 6g of fiber, no soy and no carrageenan. Premier is the healthier pick if your concern is the nutrition panel: fewer calories, less saturated fat and a full vitamin and mineral blend. Neither has added sugar, and both have 1g of total sugar, so there is very little lactose left in either bottle, although neither brand labels its shake lactose-free. Premier lists 30% of the daily value for vitamin D to Oikos’s 20%, and Oikos lists 60% for calcium to Premier’s 50%. Despite the Oikos name, its shake contains no yogurt or live cultures; the ingredient list is milk proteins, water and inulin.

Which Is Better for Weight Loss, Oikos or Premier Protein?

Premier has the edge on the numbers, with 160 calories for 30g of protein against 170 to 180 for Oikos, while Oikos offers 5g to 6g of fiber that may help it feel more filling. The calorie gap is 10 to 20 a bottle, which is small; the 5g-plus fiber gap is the bigger difference on the two labels. Worth knowing before you build a diet around either: both brands print the same notice on their product pages, “Use this product as a food supplement only. Do not use for weight reduction,” so neither is sold as a meal replacement.

Which Costs Less?

On Walmart.com on September 13, 2026, a 4-pack of Oikos Protein Shakes was listed at $9.97 and a 4-pack of Premier Protein shakes at $9.58. That works out to about $2.49 per Oikos bottle and $2.40 per Premier shake, and since both carry 30g of protein, it is also about 8.3 cents against 8.0 cents per gram of protein. Walmart lists Oikos slightly cheaper per fluid ounce (20.8 cents against 21.8 cents) because the Oikos bottle is bigger, but you are buying protein, not ounces. The Oikos 12-count was listed at $21.99, about $1.83 a bottle, so buying the bigger box erases Premier’s price edge. Prices change often and vary by store and ZIP code, so check the listing before you buy.

Which Should You Buy?

• Pick Oikos if you avoid artificial sweeteners. Every Oikos shake uses stevia extract; every Premier shake we read uses sucralose and acesulfame potassium.
• Pick Oikos if you want fiber or have a soy allergy. 5g to 6g of fiber per bottle, and milk is its only listed allergen. Premier lists milk and soy.
• Pick Oikos if you want a known caffeine dose. The Mocha Latte prints 95mg.
• Pick Premier if you want the fewest calories. 160 in every classic flavor, 10 to 20 fewer than Oikos.
• Pick Premier if you want vitamins in your shake. Its blend covers vitamins A, C, D, E and K, the B vitamins and several minerals; Oikos adds only vitamins A and D.
• Pick Premier if inulin fiber upsets your stomach. Premier Vanilla and Caramel list 0g of fiber.
• Pick Premier for variety or more protein. About 15 flavors in the classic line, and a 42g Ultimate shake when 30g is not enough.

Where to Buy

Both shakes are sold in 4-packs and 12-packs on Amazon and at Walmart. The Oikos button below opens every Oikos Protein Shake listing and pack size in one search, so you can pick your flavor; the Premier button goes to the Chocolate 12-pack.

Comparing Premier with other shakes? Our Premier Protein vs Core Power, Premier Protein vs Fairlife Nutrition Plan and Muscle Milk vs Premier Protein comparisons use the same label-first method, and Premier Protein shake nutrition covers every flavor. For the whole shelf, see the best ready-to-drink protein shakes and the cheapest protein shakes.

How We Compared

We read the Nutrition Facts panel and the ingredient statement for each shake from the brand’s own product pages on September 13, 2026: oikos.com for the five Oikos Protein Shake flavors (Chocolate, Vanilla, Salted Caramel, Strawberry and Mocha Latte) and the Oikos Pro Peach drink, and premierprotein.com for Premier Protein Chocolate, Vanilla, Caramel, Café Latte and Ultimate 42g Chocolate. Every figure is printed as the brand lists it. Oikos sells every flavor as a 12 fl oz bottle; its Strawberry and Mocha Latte panels print the serving as 369 mL and the other three as 355 mL, and the nutrition figures are as printed. Premier prints one panel for its 11 fl oz carton and 11.5 fl oz bottle. Protein per 100 calories and price per gram are our division of the label and shelf figures. Prices are the Walmart.com online listings on September 13, 2026, which can differ by store. Both brands note that formulations change, so check the bottle in your hand if a number matters to you.

Frequently Asked Questions

Is Oikos or Premier Protein better?

They tie on protein and sugar: 30g of protein and 1g of sugar in every flavor of both. Oikos is better if you avoid artificial sweeteners (it uses stevia only) or want fiber (5g to 6g per bottle). Premier is better if you want fewer calories (160 against 170 to 180), less saturated fat, more vitamins and minerals, or more flavors to choose from.

Does the Oikos protein shake have more protein than Premier Protein?

No. Both list exactly 30g of protein per bottle. Premier gets more protein per calorie, 18.8g per 100 calories against 16.7g to 17.6g for Oikos, and its Ultimate 42g line goes up to 42g in a 14 fl oz bottle.

Does the Oikos protein shake have artificial sweeteners?

No. Every Oikos Protein Shake flavor we read is sweetened with stevia extract, and the bottle says no artificial sweeteners. Premier Protein shakes are sweetened with sucralose and acesulfame potassium.

How many calories are in an Oikos protein shake vs Premier Protein?

Oikos Protein Shakes have 170 calories (Vanilla, Salted Caramel, Strawberry) or 180 calories (Chocolate, Mocha Latte). Classic Premier Protein shakes have 160 calories in every flavor we read.

Which has more fiber, Oikos or Premier Protein?

Oikos, with 5g to 6g of fiber per bottle from inulin, a prebiotic fiber. Premier Chocolate has 2g, Café Latte less than 1g, and Vanilla and Caramel 0g.

Is the Oikos protein shake cheaper than Premier Protein?

Per shake, Premier was slightly cheaper in 4-packs on Walmart.com on September 13, 2026: $9.58 for Premier ($2.40 a shake) against $9.97 for Oikos ($2.49 a bottle). The Oikos 12-count at $21.99 works out to about $1.83 a bottle.

How much caffeine is in the Oikos Mocha Latte protein shake?

Oikos lists 95mg of caffeine per 12 fl oz Mocha Latte bottle, about one cup of coffee. Premier says its Café Latte shake has the same caffeine as a cup of coffee but does not publish a milligram figure on its product page.

Do Oikos and Premier Protein shakes contain soy?

Premier Protein’s label says its shakes contain milk and soy. The Oikos Protein Shake labels list milk as the only allergen.