# Best Protein Powder for Diabetics > The best protein powder for diabetics, ranked on sugar, total carbs, fiber and sweeteners, plus when a meal-replacement shake beats a protein-only scoop. - **URL**: https://www.best-proteinpowder.com/best-protein-powder-for-diabetics/ - **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/) --- A good protein powder for diabetes is mostly about what is not in it: sugar, maltodextrin and hidden carbohydrate. These eight are ranked on the label, with the medication caveats your care team should weigh in on. **How we rank:** A good protein powder for diabetes is mostly about what is not in it: sugar, maltodextrin and hidden carbohydrate. These eight are ranked on the label, with the medication caveats your care team should weigh in on. The best protein powder for diabetics is a whey isolate or simple plant protein with close to zero sugar and only a few grams of total carbohydrate per serving. Our top pick is Isopure Zero Carb, with about 25 g of protein and essentially no carbohydrate per scoop, per the label. Protein on its own has a small, slow effect on blood sugar for most people with type 2 diabetes, so a protein-only shake is one of the easier foods to fit into a meal plan. The harder questions are about sweeteners, fiber, whether a shake is replacing a meal, and how it interacts with medication. This guide is not medical advice; anyone on insulin, sulfonylureas or with kidney disease should check with their care team first. ## Our Top Picks | Award | Product | Why | | --- | --- | --- | | Best Overall for Diabetics | [Isopure Zero Carb Protein Powder](https://www.best-proteinpowder.com/best-protein-powder-for-diabetics/#isopure-zero-carb) | The cleanest carbohydrate profile in flavored protein, ideal for carb counting. | | Best for Lifting | [Dymatize ISO100 Hydrolyzed Whey Isolate](https://www.best-proteinpowder.com/best-protein-powder-for-diabetics/#dymatize-iso100-hydrolyzed) | A lean, well-documented isolate for people with diabetes who lift. | | Best With Fiber | [Premier Protein Powder Plus Fiber, Vanilla](https://www.best-proteinpowder.com/best-protein-powder-for-diabetics/#premier-protein-powder-plus-fiber) | The pick for adding fiber and protein in one scoop. | | Best for Low-Carb Baking | [Quest Protein Powder, Vanilla Milkshake](https://www.best-proteinpowder.com/best-protein-powder-for-diabetics/#quest-protein-powder-vanilla-milkshake) | The most versatile low-carb powder for cooking, not just shaking. | | Best Ready-to-Drink | [Fairlife Nutrition Plan High Protein Shake](https://www.best-proteinpowder.com/best-protein-powder-for-diabetics/#fairlife-nutrition-plan) | The low-sugar ready-to-drink shake for busy days. | | Best Budget Shake | [Premier Protein 30g Protein Shake](https://www.best-proteinpowder.com/best-protein-powder-for-diabetics/#premier-protein-shake) | The cheapest low-sugar shake for a daily protein habit. | | Best Unsweetened Dairy-Free | [Naked Pea Protein](https://www.best-proteinpowder.com/best-protein-powder-for-diabetics/#naked-nutrition-naked-pea) | The sweetener-free, dairy-free base for building your own shake. | | Best Diabetes-Specific Meal Shake | [Glucerna Original Shake](https://www.best-proteinpowder.com/best-protein-powder-for-diabetics/#abbott-glucerna-original-shake) | A reasonable small meal replacement, but a weak protein source. | ## 1. The Quick Answer: Our Picks Compared The table puts sugar and certification side by side with protein, because for most people with diabetes those are the columns that decide whether a product belongs in the cupboard. Price tier compares cost per serving at typical retail prices. | Product | Protein / serving | Calories | Sugar | Price tier | Certification | | --- | --- | --- | --- | --- | --- | | Isopure Zero Carb | About 25 g | About 100-110 | About 0 g | Mid | Check certifier databases | | Dymatize ISO100 Hydrolyzed | About 25 g | About 110-120 | About 1 g | Premium | Banned-substance tested, per brand | | Premier Protein Powder Plus Fiber | 25 g | Check label | About 1 g | Budget | None found | | Quest Protein Powder (Vanilla Milkshake) | About 24 g | About 110 | About 1 g | Mid | None found | | Fairlife Nutrition Plan (shake) | About 30 g | About 150 | About 2 g | Mid | None confirmed | | Premier Protein 30 g Shake | About 30 g | About 160 | About 1 g | Budget | None confirmed | | Naked Pea Protein | About 27 g | About 120 | About 0 g (unflavored) | Budget | None confirmed | | Glucerna Original (shake) | About 10 g | About 180 | About 4 g | Mid | None confirmed | Isopure Zero Carb and Dymatize ISO100 are the lowest-carbohydrate powders. Premier Plus Fiber adds 7 g of soluble fiber. Fairlife and Premier are ready-to-drink options for people who want no mixing. Glucerna is the one diabetes-specific meal shake on the list, included for comparison: it is much lower in protein, and that trade-off is explained below. All figures are per the label at the time of writing and vary by flavor. ## 2. The Best Protein Powders for Diabetics, Ranked These eight are ranked on label analysis, not on our own glucose testing or a tasting panel: total carbohydrate and sugar per serving first, then protein dose, fiber, sweetener choice, certification status and cost per serving. Six are protein-only products; two add fiber or a full meal-style formula for people who use a shake to replace breakfast. Figures come from each label at the time of writing and vary by flavor, so check the exact flavor you buy, and confirm any certification in the certifier's own database. ### 1. Isopure Zero Carb Protein Powder **Award:** Best Overall for Diabetics | **Type:** Whey protein isolate, flavored - **Protein / serving:** About 25 g (label) - **Calories:** About 100-110 - **Total carbs:** About 0 g (label) - **Best for:** Carb counting, low-carb plans Isopure Zero Carb is about as close to pure protein as a flavored powder gets: roughly 25 g of protein for about 100 to 110 calories per scoop, with essentially no carbohydrate, per the label. For anyone counting carbohydrates, that means the shake's total is set almost entirely by what it is mixed with. It is lactose-light, widely available, and sold in many flavors plus an unflavored version for people who want to skip sweeteners. **Bottom line:** The cleanest carbohydrate profile in flavored protein, ideal for carb counting. **Pros:** - Essentially zero carbohydrate and sugar per scoop, per the label - About 25 g of whey isolate protein - Unflavored version available without sweeteners **Cons:** - Costs more per serving than whey blends - Mixed buyer feedback on some flavors - No fiber, so it does little to slow carbohydrate from the rest of a meal [Check price on Amazon](https://www.amazon.com/dp/B000E95HP0?tag=sktiger-20&linkCode=ll1) ### 2. Dymatize ISO100 Hydrolyzed Whey Isolate **Award:** Best for Lifting | **Type:** Hydrolyzed whey protein isolate - **Protein / serving:** About 25 g (label) - **Calories:** About 110-120 - **Sugar:** About 1 g (label) - **Best for:** Strength training, lactose sensitivity ISO100 is a benchmark whey isolate. Per the label at the time of writing, a 30 g scoop delivers 25 g of protein in about 110 to 120 calories, with roughly 1 g of sugar and very little lactose or fat. For people with diabetes who strength train, which improves insulin sensitivity, it is a low-carbohydrate way to hit a post-workout protein target. Dymatize describes the product as banned-substance tested. **Bottom line:** A lean, well-documented isolate for people with diabetes who lift. **Pros:** - About 1 g of sugar and low total carbohydrate, per the label - 25 g of fast-digesting hydrolyzed isolate - Banned-substance tested, per the brand **Cons:** - Premium cost per serving - Sucralose and stevia in flavored versions - Licensed cereal flavors carry slightly more carbohydrate; check the flavor [Check price on Amazon](https://www.amazon.com/dp/B099J2SWXV?tag=sktiger-20&linkCode=ll1) ### 3. Premier Protein Powder Plus Fiber, Vanilla **Award:** Best With Fiber | **Type:** Whey protein powder with added soluble fiber - **Protein / serving:** 25 g (brand) - **Fiber:** 7 g prebiotic soluble fiber - **Sugar:** About 1 g (brand) - **Best for:** Low-fiber diets Protein Plus Fiber gives 25 g of whey protein, 7 g of prebiotic soluble fiber and 1 g of sugar per serving, with no added sugar, per Premier at the time of writing. That 7 g is roughly a quarter of a typical daily fiber target, which is useful for people with diabetes who struggle to eat enough vegetables, legumes and whole grains. It is sold at supermarkets and warehouse clubs at a budget-tier cost per serving. **Bottom line:** The pick for adding fiber and protein in one scoop. **Pros:** - 7 g of soluble fiber per serving, per the brand - About 1 g of sugar with no added sugar - Budget-tier cost per serving **Cons:** - Extra fiber can cause bloating at first - 5 g less protein per serving than Premier's classic powder - No sport or contaminant certification found [Check price on Amazon](https://www.amazon.com/dp/B0F79XRN4F?tag=sktiger-20&linkCode=ll1) ### 4. Quest Protein Powder, Vanilla Milkshake **Award:** Best for Low-Carb Baking | **Type:** Whey isolate and micellar casein blend - **Protein / serving:** About 24 g (label) - **Calories:** About 110 - **Total carbs:** About 3 g (label) - **Best for:** Low-carb baking, slower digestion 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. The casein makes it thicker and slower-digesting than a pure isolate, and it holds up well in low-carb baking such as protein pancakes and muffins, per buyer reports, which helps people who want to swap flour-heavy breakfasts. **Bottom line:** The most versatile low-carb powder for cooking, not just shaking. **Pros:** - About 3 g of carbohydrate and 1 g of sugar, per the label - Casein blend digests more slowly and thickens shakes - Works well in low-carb baking, per buyer reports **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) ### 5. Fairlife Nutrition Plan High Protein Shake **Award:** Best Ready-to-Drink | **Type:** Ultra-filtered milk protein shake - **Protein / bottle:** About 30 g (label) - **Calories:** About 150 - **Sugar:** About 2 g (label) - **Best for:** Grab-and-go, calorie control Nutrition Plan uses ultra-filtered milk to deliver about 30 g of protein for about 150 calories and about 2 g of sugar per bottle, per the label at the time of writing. Ultra-filtration removes much of the milk sugar, and the brand says the shake is lactose-free, so it carries far less carbohydrate than the same amount of regular milk. For people who want a shake in the car or at work without mixing, it is one of the best protein-to-carbohydrate ratios on the shelf. **Bottom line:** The low-sugar ready-to-drink shake for busy days. **Pros:** - About 30 g of protein with about 2 g of sugar, per the label - Lactose-free, per the brand - Ready to drink, with nothing to measure **Cons:** - Non-nutritive sweeteners on most flavors - Narrower flavor range than the biggest brands - Costs more per serving than a powder [Check price on Amazon](https://www.amazon.com/s?k=Fairlife%20Nutrition%20Plan%20High%20Protein%20Shake&tag=sktiger-20) ### 6. Premier Protein 30g Protein Shake **Award:** Best Budget Shake | **Type:** Ready-to-drink milk protein shake - **Protein / bottle:** About 30 g (label) - **Calories:** About 160 (11 fl oz) - **Sugar:** About 1 g (label) - **Best for:** Budget daily shake Premier Protein delivers about 30 g of protein from milk protein concentrate and calcium caseinate, about 160 calories and about 1 g of sugar per 11 fl oz carton, per the label at the time of writing. Bought by the case, it is one of the cheapest low-sugar ready-to-drink shakes available, which matters for people using one every day as a snack or alongside breakfast. **Bottom line:** The cheapest low-sugar shake for a daily protein habit. **Pros:** - About 30 g of protein with about 1 g of sugar, per the label - Low cost per serving when bought by the case - Shelf-stable and widely available **Cons:** - Sweetened with sucralose and acesulfame potassium - Stabilizer-heavy ingredient list; some buyers find it thin or very sweet - No sport or contaminant certification confirmed [Check price on Amazon](https://www.amazon.com/dp/B07MJL8NXR?tag=sktiger-20&linkCode=ll1) ### 7. Naked Pea Protein **Award:** Best Unsweetened Dairy-Free | **Type:** Single-source yellow pea protein isolate - **Protein / serving:** About 27 g (label) - **Calories:** About 120 - **Third-party tested:** No sport certification confirmed - **Best for:** Dairy-free, sweetener-free Naked Pea has one ingredient, yellow pea protein, which the brand says is sourced from the United States and Canada. It delivers about 27 g of protein in roughly 120 calories per serving per the label, with no sweeteners at all. That makes it the pick for people with diabetes who are dairy-free, or who want to avoid sucralose, stevia and sugar alcohols and control the flavor with berries or cinnamon themselves. **Bottom line:** The sweetener-free, dairy-free base for building your own shake. **Pros:** - Single ingredient with no sweeteners - About 27 g of protein per serving, per the label - Budget-tier cost per serving **Cons:** - No sport certification we could confirm - Earthy taste in water alone, as buyers commonly report - Pea protein carries more sodium than whey; check the label if you watch salt [Check price on Amazon](https://www.amazon.com/dp/B00NBIUGA2?tag=sktiger-20&linkCode=ll1) ### 8. Glucerna Original Shake **Award:** Best Diabetes-Specific Meal Shake | **Type:** Ready-to-drink diabetes nutrition shake - **Protein / bottle:** About 10 g (retailer label) - **Calories:** About 180 (8 fl oz) - **Carbs / fiber:** About 16 g / 4 g - **Best for:** Small meal replacement Glucerna is the diabetes-specific shake many people are first pointed toward, and it is built as a meal or snack replacement rather than a protein supplement. Per retailer labels at the time of writing, an 8 fl oz bottle of the Original shake provides about 180 calories, 10 g of protein, 16 g of carbohydrate including 4 g of fiber and 4 g of sugar, and 9 g of fat, plus added vitamins and minerals. It is the right tool for a balanced small meal; it is not the right tool for a protein target. **Bottom line:** A reasonable small meal replacement, but a weak protein source. **Pros:** - Balanced carbohydrate, fat and fiber for a small meal replacement - Designed for people with diabetes, with added vitamins and minerals - Ready to drink and widely sold in pharmacies **Cons:** - Only about 10 g of protein per bottle - About 4 g of added sugar, including fructose, per retailer labels - Contains sucralose; check flavor-specific labels [Check price on Amazon](https://www.amazon.com/dp/B000NYSNVQ?tag=sktiger-20&linkCode=ll1) ## 3. How Protein Affects Blood Sugar Carbohydrate is the macronutrient that raises blood glucose most directly. Protein has a much smaller and slower effect. In people with type 2 diabetes, studies going back decades have found that a protein-only meal produces little rise in blood glucose, although it does stimulate insulin release. That is why a protein shake made with water or unsweetened milk is usually one of the easier things to fit into a diabetes meal plan, provided the powder itself is not carrying hidden sugar. Some research suggests protein may even blunt the glucose rise from a carbohydrate meal. In a 2014 study in Diabetologia, Jakubowicz and colleagues gave people with type 2 diabetes 50 g of whey protein before a high-glycemic breakfast and found a substantially lower blood glucose response after the meal than with a control drink, along with a larger early insulin response. That was a small, short study with a large whey dose, so it does not mean everyone should drink whey before meals, but it is a useful signal that protein and carbohydrate together behave differently from carbohydrate alone. Type 1 diabetes is more complicated. Large amounts of protein, especially with fat, can raise blood glucose several hours after a meal in people with type 1, and a 2015 review in Diabetes Care by Bell and colleagues discussed adjusting insulin for high-protein, high-fat meals. Anyone with type 1 who starts a daily shake should watch continuous glucose monitor or fingerstick readings for a few days and talk to their diabetes team about whether their dosing needs to change. The American Diabetes Association's Standards of Care do not set a single ideal ratio of protein, carbohydrate and fat for people with diabetes, and emphasize individualized eating plans. For our wider take on how protein fits a general diet, see our guide to [how much protein you need](https://www.best-proteinpowder.com/how-much-protein-do-i-need/). ## 4. Sugar, Total Carbs and Hidden Maltodextrin Read total carbohydrate, not just sugar. The front of a tub may say low sugar or no added sugar while the nutrition panel shows 10 g or more of carbohydrate per serving, often from maltodextrin, a starch-derived carbohydrate that is digested rapidly and raises blood glucose much like sugar. Maltodextrin does not count as sugar on the label, so a powder can honestly claim 1 g of sugar while carrying a meaningful carbohydrate load. Mass gainers are the extreme case, often delivering 50 g or more of carbohydrate per serving. Isolates are the easiest way to keep carbohydrate low. Whey protein isolate is filtered to remove most of the lactose and fat, which is why products like Isopure Zero Carb and Dymatize ISO100 sit at around 0 to 2 g of carbohydrate per scoop, per their labels. Whey concentrate keeps more lactose, typically a few grams per scoop. Chocolate flavors usually add a gram or two from cocoa. Our guide to the [best whey protein isolate](https://www.best-proteinpowder.com/best-whey-protein-isolate/) compares the leanest isolates in more detail. > **THE RULE** > > **Aim for 5 g of total carbohydrate or less per serving.** > > For a protein-only powder, that threshold leaves room for flavoring and a little lactose while ruling out maltodextrin-padded formulas. Then count whatever you mix it with: a cup of dairy milk adds about 12 g of carbohydrate, a banana roughly 25 g. What you add to the shake usually matters more than the powder. A low-carb scoop blended with a banana, a cup of juice and a spoonful of honey can easily reach 50 g of carbohydrate. Unsweetened almond or soy milk, a handful of berries, or plain water keep the shake close to the powder's own numbers. If you are counting carbohydrates for insulin dosing, count the whole glass, not the scoop. ## 5. Sweeteners: Sucralose, Stevia, Monk Fruit and Erythritol Almost every low-sugar protein powder uses a non-nutritive sweetener to taste sweet without sugar. The common ones are sucralose, acesulfame potassium, stevia leaf extract, monk fruit extract and sugar alcohols such as erythritol. The American Diabetes Association's Standards of Care say non-nutritive sweeteners can be an acceptable replacement for sugar-sweetened products when used in moderation, while generally favoring water and unsweetened options overall. Research on whether these sweeteners affect glucose control is mixed. Most trials find that sucralose, stevia and monk fruit do not raise blood glucose directly, but some studies have raised questions about effects on the gut microbiome and insulin sensitivity, and results differ between individuals. Erythritol has drawn particular attention since a 2023 study in Nature Medicine by Witkowski and colleagues reported an association between higher blood erythritol levels and major cardiovascular events. That study was observational and cannot show cause, but people with diabetes already carry higher cardiovascular risk, so some prefer to avoid erythritol while the research develops. Sugar alcohols also have practical downsides. Erythritol, maltitol and sorbitol can cause bloating, gas and diarrhea in larger amounts, and maltitol raises blood glucose more than most people expect. If you want to avoid sweeteners entirely, an unflavored powder such as Naked Pea or Isopure Zero Carb Unflavored lets you sweeten the shake yourself with fruit or cinnamon. If you prefer flavored, choose one sweetener you tolerate and stick with it. ## 6. Fiber and Why It Matters Fiber slows how quickly carbohydrate is absorbed, which can soften the rise in blood glucose after a meal, and soluble fiber is associated with modest improvements in cholesterol. The American Diabetes Association advises people with diabetes to eat at least the amount of fiber recommended for the general population, about 14 g per 1,000 calories, which works out to roughly 25 to 35 g a day for most adults. Most Americans fall well short. Protein powders are usually not a fiber source. Isolates contain essentially none, and many plant powders only a gram or two. Premier Protein Powder Plus Fiber is the exception on this list, with 7 g of prebiotic soluble fiber per serving per the brand, about a quarter of a typical daily target. That makes it a reasonable pick for someone who struggles to eat enough vegetables, legumes and whole grains, though food sources remain the better route. Adding fiber to any shake is easy. A tablespoon of chia seeds adds about 4 to 5 g, a tablespoon of ground flaxseed about 2 g, and half a cup of raspberries about 4 g with only a few grams of net carbohydrate. Start small if you are not used to much fiber, because a sudden jump can cause bloating, and drink plenty of water alongside it. Our [best protein powder for smoothies](https://www.best-proteinpowder.com/best-protein-powder-for-smoothies/) guide covers blends that pair well with these additions. ## 7. Meal Replacement vs Protein-Only Shakes There are two quite different products in the diabetes aisle. Protein-only powders and shakes, like most of our picks, deliver 25 to 30 g of protein with almost no carbohydrate or fat; they are designed to add protein to a meal or serve as a snack. Meal-replacement shakes, including diabetes-specific formulas such as Glucerna, are built to stand in for a meal, with a mix of carbohydrate, fat, fiber and added vitamins and minerals, and usually less protein. Glucerna Original provides about 10 g of protein, 16 g of carbohydrate, 4 g of fiber and 4 g of sugar in 180 calories per 8 fl oz bottle, per retailer labels at the time of writing. Meal replacements have a real evidence base in diabetes when they are used as part of a structured program. In the DiRECT trial, published by Lean and colleagues in The Lancet in 2018, adults with type 2 diabetes in UK primary care who followed a total diet replacement program of formula shakes for several months, followed by gradual food reintroduction, achieved remission in 46 percent of cases at 12 months, compared with 4 percent in the control group. Critically, that happened with medication withdrawn under medical supervision. For everyday use, the choice comes down to what the shake is replacing. If you skip breakfast and want a shake instead, a meal-style formula or a protein powder blended with fiber, fat and a small portion of fruit gives a more balanced result than protein and water alone. If you want to add protein to an existing meal, or have a snack between meals, a protein-only product makes more sense. For weight loss, which matters for many people with type 2 diabetes, our [best protein powder for weight loss](https://www.best-proteinpowder.com/best-protein-powder-for-weight-loss/) guide goes deeper, including protein while using GLP-1 medications. ## 8. Kidney Disease, Medication and Your Care Team This section is the most important one on the page. Diabetes is the leading cause of chronic kidney disease, and kidney function changes the right protein intake. The American Diabetes Association's Standards of Care recommend that people with diabetes and chronic kidney disease who are not on dialysis keep protein at about 0.8 g per kilogram of body weight per day, the standard adult RDA, rather than higher. People on dialysis often need more. A daily high-protein shake can push intake above target, so anyone with kidney disease should agree a number with their doctor or a renal dietitian first. Medication is the other big variable. People who take insulin or sulfonylureas such as glipizide or glyburide can experience hypoglycemia if they replace a carbohydrate-containing meal with a near-zero-carb protein shake without adjusting their dose. People taking SGLT2 inhibitors such as empagliflozin or dapagliflozin face a rare but serious risk of ketoacidosis, which the FDA has warned about, and very low carbohydrate intake is one of the recognized risk factors. These are not reasons to avoid protein shakes; they are reasons to tell your care team before changing how you eat. GLP-1 medications such as semaglutide and tirzepatide reduce appetite substantially, and people using them sometimes struggle to eat enough protein to preserve muscle while losing weight. A protein shake can help, but nausea is a common side effect, so smaller servings may work better. This guide is general information, not medical advice. Your doctor, diabetes educator or registered dietitian knows your medication, kidney function and goals, and should have the final word. Our explainer on whether [protein powder is safe](https://www.best-proteinpowder.com/is-protein-powder-safe/) covers quality and contamination. ## 9. How We Picked These Powders We did not test these products on our own blood glucose or send them to a lab. Rankings are built on each product's nutrition panel and ingredient list at the time of writing, the brand's stated testing and certification status, typical retail cost per serving and the published research summarized above. Taste and texture comments reflect patterns in buyer reviews. Our [how we test](https://www.best-proteinpowder.com/how-we-test/) page explains the method. The first filter was carbohydrate: protein-only products had to come in at about 5 g of total carbohydrate or less per serving and no more than 2 g of sugar, which ruled out most gainers and many plant blends. We then ranked on protein dose, preferring 24 to 30 g per serving, followed by fiber, sweetener transparency and certification. We included Glucerna as a meal-replacement reference point despite its lower protein, because it is the product many people with diabetes are first recommended. We favored isolates over concentrates for their lower lactose and carbohydrate, and included one unflavored pea protein for people who are dairy-free or want to avoid sweeteners entirely. Our [Premier Protein review](https://www.best-proteinpowder.com/premier-protein-powder-review/) covers the Plus Fiber powder and the ready-to-drink shakes in more depth, and our main [best protein powder](https://www.best-proteinpowder.com/best-protein-powder/) rankings cover the broader market. ## 10. Common Mistakes to Avoid ### Reading sugar but not total carbohydrate A powder can list 1 g of sugar and still carry 10 g or more of carbohydrate from maltodextrin, which raises glucose much like sugar. Check the total carbohydrate line on the nutrition panel, aim for about 5 g or less per serving for a protein-only powder, and count the milk or fruit you mix in. ### Swapping a meal without adjusting medication Replacing a carbohydrate-containing meal with a near-zero-carb shake can cause low blood sugar in people on insulin or sulfonylureas. People on SGLT2 inhibitors should also avoid very low carbohydrate intake without guidance. Tell your care team before using shakes as meal replacements so doses can be reviewed. ### Assuming diabetes-labeled shakes are high protein Diabetes-specific meal shakes are designed for balanced carbohydrate and fat, not protein. Glucerna Original, for example, provides about 10 g of protein per bottle, less than half of a typical protein powder serving. If your goal is protein, compare the protein line rather than the front label. ### Adding protein with kidney disease Diabetes is the leading cause of chronic kidney disease, and the ADA recommends about 0.8 g of protein per kilogram a day for people with diabetes and kidney disease who are not on dialysis. A daily high-protein shake can push intake higher. Ask about your kidney function before starting one. ### Turning a shake into a dessert A low-carb scoop blended with banana, juice and honey can reach 50 g of carbohydrate. Build shakes on water, unsweetened almond or soy milk and a handful of berries, and add chia or flax for fiber. The powder is rarely the problem; the add-ins usually are. ## 11. Frequently Asked Questions ### What is the best protein powder for diabetics? A whey isolate or simple plant protein with close to zero sugar and about 5 g of total carbohydrate or less per serving. Isopure Zero Carb is our top pick, with about 25 g of protein and essentially no carbohydrate per the label. Dymatize ISO100 and Quest are good alternatives, and Naked Pea suits people who are dairy-free or want to avoid sweeteners. ### Do protein shakes raise blood sugar? A protein-only shake made with water or unsweetened milk usually causes little rise in blood glucose for people with type 2 diabetes, though protein does stimulate insulin. Shakes with maltodextrin, sugar or fruit and juice can raise it significantly. People with type 1 diabetes may see a delayed rise after large protein servings, so monitor readings when starting. ### Is whey protein good for type 2 diabetes? Whey is a reasonable choice for many people with type 2 diabetes. It is low in carbohydrate in isolate form, and a 2014 study in Diabetologia found that whey taken before a high-glycemic breakfast lowered the post-meal glucose response. That was a small study with a large dose. Check with your care team, especially if you have kidney disease. ### Is Glucerna better than protein powder for diabetics? They do different jobs. Glucerna Original is a meal-style shake with about 10 g of protein, 16 g of carbohydrate and 4 g of fiber per bottle, per retailer labels. A protein powder provides 25 g or more of protein with almost no carbohydrate. Glucerna suits a small meal replacement; a protein powder suits adding protein to a meal or snack. ### Which sweeteners are best for diabetics? Sucralose, stevia and monk fruit do not raise blood glucose directly in most studies, and the ADA says non-nutritive sweeteners can replace sugar in moderation. Erythritol has been linked to cardiovascular events in an observational 2023 study, though cause was not shown. Maltitol raises glucose more than other sugar alcohols. Unflavored powders let you avoid sweeteners entirely. ### Can diabetics replace meals with protein shakes? Yes, with care. Structured meal-replacement programs have strong evidence, including the DiRECT trial, where nearly half of participants achieved type 2 remission at 12 months under medical supervision. But replacing meals with low-carb shakes can cause hypoglycemia on insulin or sulfonylureas, so talk to your care team first and use a balanced formula rather than protein and water alone. ### How much protein should a diabetic have per day? There is no special protein target for diabetes alone; the ADA favors individualized plans, and many people do well around the general recommendations. For people with diabetes and chronic kidney disease not on dialysis, the ADA recommends about 0.8 g per kilogram per day. Your doctor or a registered dietitian can set a number based on your kidney function and goals. ## Related Protein Powder Guides - [Best Whey Protein Isolate](https://www.best-proteinpowder.com/best-whey-protein-isolate/): The leanest isolates ranked on protein, carbs, lactose and testing. - [Best Protein Powder for Weight Loss](https://www.best-proteinpowder.com/best-protein-powder-for-weight-loss/): Protein per calorie, satiety and GLP-1 considerations. - [Best Protein Drink](https://www.best-proteinpowder.com/best-protein-drink/): Ready-to-drink shakes ranked on protein per bottle and sugar. ## The Bottom Line For most people with diabetes, the right protein powder is a boring one: a whey isolate or simple plant protein with close to zero sugar and about 5 g of carbohydrate or less per serving, mixed with water, unsweetened milk or a handful of berries. Isopure Zero Carb is our top pick, Premier Plus Fiber is the choice if you need more fiber, and Naked Pea suits anyone avoiding dairy or sweeteners. The bigger decisions are not about the tub. Whether a shake replaces a meal, how it interacts with insulin, sulfonylureas or SGLT2 inhibitors, and what your kidney function allows all belong in a conversation with your doctor, diabetes educator or registered dietitian before you change your routine. ## More in Protein Powder Guides in this category that pair with what you just read. - [Best Protein Powder for PCOS](https://www.best-proteinpowder.com/best-protein-powder-for-pcos/) - [Best Sugar-Free Protein Powder](https://www.best-proteinpowder.com/best-sugar-free-protein-powder/) - [Best Protein Powder](https://www.best-proteinpowder.com/best-protein-powder/) - [Premier Protein Powder Review](https://www.best-proteinpowder.com/premier-protein-powder-review/) - [Is Protein Powder Safe?](https://www.best-proteinpowder.com/is-protein-powder-safe/) 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/)