14 Costco High-Protein Finds Perfect for Meal Prep and Gym Goals

Costco isn’t just the place to stock up on bulk snacks and household essentials—it’s also a treasure trove of high-protein products that fuel fitness, meal prep, and busy lifestyles. Whether you’re hitting the gym, planning nutritious meals, or looking for an easy grab-and-go option, Costco’s protein-packed lineup delivers quality, flavor, and serious value. From classic whey powders to ready-to-drink shakes and protein bars, here are 14 high-protein finds that shoppers swear by for keeping their nutrition goals on track.

RXBar Protein Bars $20.99/14 ct

Known for their “no B.S.” label, RXBars are made with simple ingredients like egg whites, dates, and nuts. Each bar packs about 12 grams of protein and comes in flavors like chocolate sea salt, peanut butter, and blueberry. They’re chewy, satisfying, and free from added sugars or artificial fillers. Perfect for a quick breakfast or post-gym snack, RXBars are a Costco favorite for clean protein with no guesswork.

Orgain Creamy Chocolate Plant Protein Shakes $29.99/18 ct

For those who prefer plant-based nutrition, Orgain’s creamy chocolate shakes are a smooth and delicious option. Each carton contains 20 grams of protein sourced from peas and brown rice, along with fiber to keep you feeling full. They’re organic, vegan-friendly, and free from soy, dairy, and gluten. Whether you enjoy them as a meal replacement or a recovery drink, they’re a versatile choice for anyone seeking plant-powered protein.

Muscle Milk Chocolate Protein Shakes $31.99/18 x 11 fl oz

Muscle Milk has long been a go-to brand for athletes and gym-goers, and Costco offers a convenient bulk pack of their chocolate shakes. Each serving delivers 25 grams of protein plus vitamins and minerals to support recovery. Smooth, chocolatey, and ready to drink, they’re perfect for stashing in your gym bag or keeping in the fridge for quick refueling after workouts.

Built Puff Protein Bars $23.99/14 x 1.41 oz

These marshmallow-like protein bars are a fun twist on the standard bar. Each Built Puff is coated in chocolate with a fluffy, protein-packed center that feels more like a treat than a supplement. With around 17 grams of protein per bar, they satisfy both your sweet tooth and your nutritional goals. Costco shoppers love keeping these on hand for a low-guilt, high-protein indulgence.

Fairlife Chocolate Nutrition Shakes $38.99/18 x 11.5 fl oz

Fairlife shakes are ultra-filtered to provide high-quality protein with less sugar. Each chocolate shake packs 30 grams of protein, making them one of the highest-protein ready-to-drink options at Costco. They’re lactose-free, creamy, and delicious, making them a top pick for those who want both taste and performance. Gym-goers rave about their smooth texture and reliable nutrition profile.

TruBars $27.99/14 × 50 g

TruBars combine clean ingredients with indulgent flavors like Daydreaming About Donuts and Smother Fudger Peanut Butter. Each bar provides about 12 grams of plant-based protein and has a softer, brownie-like texture compared to other protein bars. They’re gluten-free, non-GMO, and vegan-friendly, making them a great alternative for those seeking variety in their snack rotation.

Nurri Ultra-Filtered Vanilla Milkshakes $26.99/12 x 11 fl oz

Nurri shakes offer a creamy vanilla flavor with a nutrient-dense formula. Each serving provides around 20 grams of protein, along with essential vitamins and minerals. The ultra-filtration process enhances protein concentration while keeping calories balanced. Great for both adults and teens, these shakes double as quick meal replacements or post-workout recovery drinks.

Chef Robert Irvine’s FitCrunch High Protein Baked Bars $22.99/18 x 1.62 oz

Created by celebrity chef Robert Irvine, FitCrunch bars are known for their dessert-like taste. Each bar packs 30 grams of protein and layers of crunchy, soft, and creamy textures that mimic a candy bar. Flavors like peanut butter and chocolate chip cookie dough make them irresistible. Costco shoppers love that they feel indulgent but still support fitness goals.

PediaSure Grow & Gain Vanilla Shakes $44.99/24 x 8 fl oz

Designed for kids but appreciated by adults, PediaSure Grow & Gain shakes deliver balanced nutrition with 7 grams of protein per bottle. They’re fortified with 27 vitamins and minerals, supporting growth and energy. Costco’s bulk pack is ideal for families, making these shakes a go-to for busy mornings, after-school snacks, or travel-friendly nutrition.

Optimum Nutrition Gold Standard 100% Whey $56.74/5.47 lbs

One of the most trusted names in protein, Optimum Nutrition offers a classic whey powder that mixes smoothly into shakes, oats, or smoothies. Each scoop provides 24 grams of protein with minimal fat and sugar. The Vanilla Ice Cream flavor is versatile, making it easy to blend into a variety of recipes. With 73 servings per tub, Costco’s bulk size offers exceptional value for serious athletes.

Kirkland Signature Creamy Chocolate Flavored Whey Protein $54.99/5.4 lbs

Costco’s own Kirkland whey protein is a hidden gem for value seekers. With 30 grams of protein per serving and a rich chocolate flavor, it rivals name brands at a much lower price per scoop. It mixes easily into water or milk and works well for shakes or baking. Shoppers say it’s their go-to staple for affordable, high-quality protein in bulk.

Ascent Native Whey Protein Blend (Vanilla Bean) $54.99/4.25 lbs

Ascent sets itself apart with native whey sourced directly from milk, resulting in faster absorption and fewer additives. Each scoop contains 25 grams of clean protein with minimal carbs and fat. The vanilla bean flavor is smooth and natural, making it a favorite among those who prefer straightforward, high-quality supplements. Costco’s large bag ensures you won’t run out mid-training cycle.

Premier Protein Caramel High Protein Shakes $30.99/18 x 11 fl oz

These caramel-flavored shakes are consistently ranked among the best-tasting protein drinks. Each bottle provides 30 grams of protein with just 1 gram of sugar, making them a smart choice for anyone watching macros. They’re portable, delicious, and versatile enough for breakfast on the go or post-workout recovery. Costco shoppers love their unbeatable price compared to grocery store singles.

Glucerna Original Homemade Vanilla Shakes $40.39/24 ct

Specially designed for people managing blood sugar, Glucerna shakes provide steady energy with a unique blend of slow-release carbs and 10 grams of protein per bottle. The homemade vanilla flavor is smooth and satisfying. While geared toward individuals with diabetes, many shoppers enjoy them as a balanced, portion-controlled snack. Costco’s bulk pack makes them an affordable option for daily use.

Final Thoughts

Whether you’re building muscle, staying fueled between meals, or simply looking for convenient nutrition, Costco delivers big with its selection of high-protein products. From classic whey powders to plant-based shakes and kid-friendly options, these 14 finds offer something for everyone. The best part? Costco’s bulk pricing ensures you get premium quality without paying premium prices. Next time you’re stocking up, add these protein-packed essentials to your cart—they’ll keep you fueled for both gym goals and everyday life.