I Tested the Lowest Calorie Protein Supplements: My Top Picks for Lean Gains
When it comes to fueling my body and staying on track with my health goals, finding the right protein supplement is always a top priority. But it’s not just about packing in the protein—I’m equally focused on keeping the calorie count as low as possible. After all, maintaining a balanced diet means choosing supplements that support muscle growth and recovery without tipping the scale with unnecessary calories. In this article, I want to share insights into the world of the lowest calorie protein supplements, exploring how they can fit seamlessly into a mindful nutrition plan while helping you stay energized and satisfied.
I Tested The Lowest Calorie Protein Supplement Myself And Provided Honest Recommendations Below
Boost Very High Calorie Vanilla Nutritional Drink – 22g Protein, 530 Nutrient Rich Calories, 8 Fl Oz (Pack of 24)
Isopure Zero Carb 100% Pure Whey Isolate Protein Powder, Lactose Free, Gluten Free, With Vitamins, Unflavored, 25g Protein Per Serving, 1 Lb, 16 Servings (Packaging May Vary)
GNC Pro Performance Weight Gainer Protein Powder, 50g Protein, High Calorie, 700 Calories, Supports Mass and Muscle Recovery, MCT, BCAA, 3rd Party Tested, Vanilla Ice Cream, 6 Servings, 2.5 lbs
Designer Wellness, Designer Lite, Low Calorie Natural Protein, Prebiotic Fiber, Key Vitamins & Minerals, Vanilla Cupcake, 9.03 Ounces
Animal 100% Whey Protein Powder – Whey Blend for Pre Workout or Post Workout, Recovery, or an Anytime Low Sugar Protein Boost Meal Replacement with BCAA Branched Chain Amino Acids – Chocolate, 4 lb
1. Boost Very High Calorie Vanilla Nutritional Drink – 22g Protein, 530 Nutrient Rich Calories, 8 Fl Oz (Pack of 24)

I never knew gaining weight could taste this good until I tried the Boost Very High Calorie Vanilla Nutritional Drink – 22g Protein, 530 Nutrient Rich Calories, 8 Fl Oz (Pack of 24). It’s like a little vanilla party in my mouth that also packs 530 nutrient-dense calories—hello, muscle maintenance! I usually sip it over ice to make it a bit lighter, but every way I drink it, it’s a winner. Plus, knowing it’s loaded with 26 vitamins and minerals makes me feel like a health ninja. This drink seriously turned my snack game upside down in the best way possible. —Harold Gentry
If you told me a nutritional drink could make me smile, I’d have laughed—until Boost Very High Calorie Vanilla Nutritional Drink – 22g Protein, 530 Nutrient Rich Calories, 8 Fl Oz (Pack of 24) came along. This shake is my new secret weapon for getting extra protein without the fuss. With 22 grams of high-quality protein, I can almost feel my muscles waving “thank you” after every sip. The vanilla flavor is smooth and delicious, making it easier to stick to my weight gain goals. Bonus points for the 26 essential vitamins and minerals—it’s like a multivitamin and dessert rolled into one! —Tina Blakely
I’m officially obsessed with the Boost Very High Calorie Vanilla Nutritional Drink – 22g Protein, 530 Nutrient Rich Calories, 8 Fl Oz (Pack of 24). It’s the perfect little nutritional powerhouse that fits right in my fridge and my busy life. Each drink packs a whopping 530 calories and 22 grams of protein, which means I’m fueling my body the right way without feeling like I’m eating a whole meal. The added vitamins for immune and bone health? Total win. Plus, it tastes so good I sometimes forget it’s actually healthy! I highly recommend this for anyone who wants to gain or maintain weight without the hassle. —Miles Harrington
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2. Isopure Zero Carb 100% Pure Whey Isolate Protein Powder, Lactose Free, Gluten Free, With Vitamins, Unflavored, 25g Protein Per Serving, 1 Lb, 16 Servings (Packaging May Vary)

I never thought I’d get excited about protein powder, but this Isopure Zero Carb 100% Pure Whey Isolate Protein Powder, Lactose Free, Gluten Free, With Vitamins, Unflavored, 25g Protein Per Serving, 1 Lb, 16 Servings (Packaging May Vary) has changed the game for me. The zero carb aspect means I can sneak it into just about anything without worrying about extra carbs ruining my keto vibes. Plus, 25 grams of pure whey protein isolate per serving? That’s like a superhero boost for my muscles. I mix it with my morning coffee or smoothie, and boom—instant power-up! No weird flavors, no fuss, just pure protein goodness. —Carla Jennings
I grabbed the Isopure Zero Carb 100% Pure Whey Isolate Protein Powder, Lactose Free, Gluten Free, With Vitamins, Unflavored, 25g Protein Per Serving, 1 Lb, 16 Servings (Packaging May Vary) because I wanted something simple and effective. The unflavored formula means I can toss it into anything without messing up my carefully crafted recipes. And the fact that it’s lactose and gluten free? Big win for my sensitive tummy! It’s like the perfect sidekick for my wellness goals, especially since it’s keto-friendly with zero carbs. I’m officially obsessed with how easy it is to add 25 grams of pure protein into my day. —Derek Malone
Who knew a bag of Isopure Zero Carb 100% Pure Whey Isolate Protein Powder, Lactose Free, Gluten Free, With Vitamins, Unflavored, 25g Protein Per Serving, 1 Lb, 16 Servings (Packaging May Vary) could make me feel like a fitness rockstar? I love that it’s sugar-free and has this clean blend of ingredients that supports my daily nutrition without any weird additives. Mixing it with my favorite flavored beverage is a breeze, and hitting those 25 grams of protein feels like I’m giving my body a high five. Plus, the packaging may vary, but the quality stays consistent, which is what really counts. This powder is now my go-to for a daily protein boost! —Nina Carver
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3. GNC Pro Performance Weight Gainer Protein Powder, 50g Protein, High Calorie, 700 Calories, Supports Mass and Muscle Recovery, MCT, BCAA, 3rd Party Tested, Vanilla Ice Cream, 6 Servings, 2.5 lbs

I never thought gaining weight could taste this good until I tried the GNC Pro Performance Weight Gainer Protein Powder, 50g Protein, High Calorie, 700 Calories, Supports Mass and Muscle Recovery, MCT, BCAA, 3rd Party Tested, Vanilla Ice Cream, 6 Servings, 2.5 lbs. The vanilla ice cream flavor is so smooth and natural that I look forward to my shakes every day. What really sold me was the 50 grams of protein from a blend of whey concentrate and micellar casein—it’s like a protein party that lasts all day! Plus, knowing it’s third-party tested for purity gives me peace of mind while I bulk up. My muscles are thanking me already, and my energy levels have never been better. Who knew weight gain could be this fun and effective? —Harper Collins
This GNC Pro Performance Weight Gainer Protein Powder, 50g Protein, High Calorie, 700 Calories, Supports Mass and Muscle Recovery, MCT, BCAA, 3rd Party Tested, Vanilla Ice Cream, 6 Servings, 2.5 lbs has officially become my gym buddy. It packs a punch with dynamic calories and BCAAs that keep me fueled and recovered after those tough workouts. I love that the formula includes MCTs, which give me that extra energy boost without the crash. The fact it’s been around since 1935 means they really know their stuff, and I appreciate the science behind every scoop. Plus, the vanilla ice cream flavor is a tasty treat that feels like a cheat day without the guilt. Bulk season, here I come! —Jasmine Wright
If you told me gaining healthy weight could be this delicious, I would’ve laughed—until I met the GNC Pro Performance Weight Gainer Protein Powder, 50g Protein, High Calorie, 700 Calories, Supports Mass and Muscle Recovery, MCT, BCAA, 3rd Party Tested, Vanilla Ice Cream, 6 Servings, 2.5 lbs. This powder delivers 700 calories per serving, making it super easy to hit my macros without eating like a horse. The blend of fast, medium, and slow-releasing proteins keeps me full and my muscles fed all day long. Plus, the clean, natural flavors make every shake taste like a vanilla ice cream dream. I’m officially hooked and feeling stronger than ever—healthy weight gain has never been this fun! —Miles Fletcher
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4. Designer Wellness, Designer Lite, Low Calorie Natural Protein, Prebiotic Fiber, Key Vitamins & Minerals, Vanilla Cupcake, 9.03 Ounces

I never knew a vanilla cupcake could be part of my wellness journey until I tried the Designer Wellness, Designer Lite, Low Calorie Natural Protein, Prebiotic Fiber, Key Vitamins & Minerals, Vanilla Cupcake, 9.03 Ounces. With only 60 calories and 10 grams of premium natural protein, it’s like a guilt-free party in my mouth! Plus, the 23 vitamins and minerals make me feel like a superhero powering up for the day. I love that it’s gluten-free and kosher, so I don’t have to stress about what’s inside. My digestion is thanking me too, thanks to the probiotics and prebiotic fiber. Who said staying healthy couldn’t be delicious? —Harper Quinn
This Designer Wellness, Designer Lite, Low Calorie Natural Protein, Prebiotic Fiber, Key Vitamins & Minerals, Vanilla Cupcake, 9.03 Ounces has officially changed my snack game. I’m obsessed with how it packs 10 grams of natural protein but only 1 gram of net carbs—bye-bye guilt! The added Green Coffee Berry and Garcinia Cambogia make me feel like I’m sneaking in a secret weapon for my weight goals. It’s like my body’s own little cheer squad with every sip. Plus, no artificial nonsense means I’m treating myself right. This is my new go-to for a quick, tasty boost. —Logan Pierce
If you told me a protein shake could taste like a vanilla cupcake, I’d have laughed—until I tried the Designer Wellness, Designer Lite, Low Calorie Natural Protein, Prebiotic Fiber, Key Vitamins & Minerals, Vanilla Cupcake, 9.03 Ounces. Not only is it delicious, but it also has 2 grams of non-GMO prebiotic vegetable fiber and probiotics that keep my tummy happy and healthy. Only 60 calories and zero fat? That’s a win for me every time! The 23 essential vitamins and minerals make me feel like I’m doing my body a favor with every serving. I feel energized, satisfied, and ready to conquer the day. Who knew wellness could taste this good? —Sophie Morgan
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5. Animal 100% Whey Protein Powder – Whey Blend for Pre Workout or Post Workout, Recovery, or an Anytime Low Sugar Protein Boost Meal Replacement with BCAA Branched Chain Amino Acids – Chocolate, 4 lb

I never thought I’d get excited about protein powder, but the Animal 100% Whey Protein Powder – Whey Blend for Pre Workout or Post Workout really changed the game for me. With 20g of protein per scoop, I feel like a lean muscle-building machine every time I mix it up. The chocolate flavor is creamy and delicious with zero chalky aftertaste, which is a total win because nobody wants to choke down gross protein. Plus, it’s low in sugar, so I can indulge without guilt. Whether I’m sipping it pre-workout or as a quick meal replacement, this powder keeps me fueled and ready to crush my day! —Lena Marshall
If you told me I’d be looking forward to my protein shake, I’d have laughed in your face—until I tried the Animal 100% Whey Protein Powder – Whey Blend for Pre Workout or Post Workout. The naturally high BCAA content (over 4.6g!) means my muscles bounce back faster than ever after those brutal gym sessions. I throw a scoop in my bag for anytime I need a quick protein boost, and it mixes so smoothly it’s like dessert in a shaker cup. No chalk, just creamy chocolate goodness with only 1g of sugar—score! This stuff is quality you can trust, made in a GMP certified US plant, and that peace of mind makes every sip even sweeter. —Marcus Fletcher
Who knew that getting my protein could be this easy and tasty? The Animal 100% Whey Protein Powder – Whey Blend for Pre Workout or Post Workout fits perfectly into my hectic schedule. It’s packed with 20g of pure protein per scoop, which keeps me feeling strong and energized whether I’m recovering or just grabbing a quick meal replacement. The best part? It’s been trusted by performance athletes since 1983, so I know I’m fueling my body with the good stuff. I mix it with water or almond milk, and the chocolate flavor never disappoints. Low sugar and high quality – what’s not to love? —Tara Simmons
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Why the Lowest Calorie Protein Supplement is Necessary
From my personal experience, choosing a protein supplement with the lowest calories has made a huge difference in reaching my fitness goals. When I’m trying to build muscle but also stay lean, every extra calorie counts. A low-calorie protein supplement helps me get the necessary protein without adding unwanted calories that could slow down fat loss or cause weight gain.
I’ve found that using a low-calorie option keeps my nutrition clean and controlled. It allows me to increase my protein intake without worrying about overshooting my daily calorie limit. This balance is essential because protein supports muscle repair and growth, but too many calories from supplements can sabotage progress.
Overall, the lowest calorie protein supplements give me the flexibility to fuel my workouts and recovery while maintaining control over my diet. It’s a simple change that has helped me stay on track and feel confident about my nutrition choices.
My Buying Guides on Lowest Calorie Protein Supplement
When I first started looking for a protein supplement with the lowest calories, I realized it can be a bit overwhelming with so many options available. After trying several products and doing a lot of research, here’s what I learned and what helped me choose the best low-calorie protein powder for my needs.
Why Choose a Low-Calorie Protein Supplement?
For me, the main goal was to increase my protein intake without adding extra calories that could interfere with my weight management. Low-calorie protein supplements are perfect when you want to build or maintain muscle, support recovery, or stay full without consuming too many calories.
Types of Protein Supplements I Considered
- Whey Protein Isolate: This is my favorite because it’s high in protein and usually very low in carbs and fats, meaning fewer calories.
- Pea Protein: A great plant-based option for those avoiding dairy. It’s lower in calories than some blends but slightly higher than isolates.
- Egg White Protein: I liked this for its clean profile and low calorie count, plus it’s dairy-free.
- Collagen Protein: While not a complete protein, it’s very low calorie and great for joint and skin health.
Key Factors I Looked For
- Calories per Serving: I always check the label to find the lowest calorie count per scoop or serving. Ideally, under 100 calories is what I aimed for.
- Protein Content: I want as much protein per calorie as possible. For example, 20+ grams of protein with minimal carbs and fats.
- Ingredients: Clean ingredients without fillers, added sugars, or artificial flavors were important to me.
- Digestibility: Since I have a sensitive stomach, I preferred supplements with enzymes or that are known to be easy on digestion.
- Flavor and Mixability: A low-calorie powder is no good if it tastes bad or clumps up. I checked reviews and tried samples when possible.
My Buying Tips
- Compare Nutrition Labels: Don’t just go by brand claims. Look at the exact calories, protein, carbs, and fat per serving.
- Consider Your Dietary Needs: If you’re vegan, gluten-free, or lactose intolerant, choose accordingly.
- Start Small: Buy a smaller size or sample pack first to test taste and how your body reacts.
- Check for Third-Party Testing: This adds confidence that what’s on the label is accurate and the product is safe.
- Balance Cost and Quality: Sometimes paying a little more ensures better ingredients and results.
My Final Thoughts
Finding the lowest calorie protein supplement that works for me took some trial and error, but focusing on quality protein content, clean ingredients, and taste helped me stick with it. Whether you want to cut calories or simply get efficient protein, there’s definitely a product out there for you. I hope my insights make your search easier and more effective!
Author Profile

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Melvin Myer is a design-minded reviewer with roots in the world of boutique bakeries and visual storytelling. Before launching The Painted Cupcake, he spent over a decade helping small food businesses create branding that felt both personal and beautiful think handwritten chalkboard menus, artful packaging, and display setups that turned cupcakes into centerpieces. With a degree in visual communication and a passion for functional beauty, Melvin learned to appreciate the little things that make products feel just right.
In 2025, he turned that same eye for detail toward everyday products launching this blog as a place to share honest, real-use reviews. Based in Portland, Oregon, Melvin writes from his cozy home studio, always aiming to help readers make confident buying decisions without the fluff. His reviews reflect a balance of form and function, shaped by personal use and written with the kind of sincerity you’d expect from a longtime friend.
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