27 servings of Select Protein in every tub
Choose a Protein Powder for Lean Muscle With Whey + Casein
The right protein powder should match your goals, protein source preferences, and how you want support throughout the day.

How to choose the right protein powder

Choosing a protein powder starts with the protein source, because that determines how the formula fits into your routine and your goals. If your focus is lean muscle, look for a product built around quality protein ingredients rather than a one-note approach. PEScience Select Protein is formulated with Milk Protein Isolate as the first ingredient, which naturally contains both casein and whey, along with Whey Protein Concentrate 80%.

That combination matters. The formula is built around research showing whey and casein used together can support lean muscle in a way a single-source approach may not. The blend is also associated with a quick rise in protein synthesis along with a more sustained elevation in plasma leucine levels, which can be an important consideration when evaluating how a protein powder may fit into training and recovery habits.

It also helps to think about consistency. A protein powder should be easy to use regularly, fit your taste preferences, and deliver enough servings to become part of your weekly plan. With 27 servings and a Cake Pop flavor, this option is designed for repeat use. When choosing, focus on ingredient quality, the type of protein included, and whether the formula aligns with your muscle-building priorities.

See the formula behind your protein choice

Why this formula matters

PEScience Select Protein is built around a blended protein approach. Instead of relying on a single source, it combines high-quality Milk Protein Isolate with Whey Protein Concentrate 80%. Milk Protein Isolate is especially notable because it naturally provides both casein and whey in one ingredient, giving the formula a more balanced protein profile.

For shoppers evaluating benefits, that means looking beyond the front label and into how the ingredients work together. The product description highlights research behind combining whey and casein, noting a synergistic effect for building lean muscle. It also points to two key considerations many active shoppers care about: an early increase in protein synthesis and more sustained plasma leucine levels.

  • Blended protein sources: Includes both whey and casein through Milk Protein Isolate, plus Whey Protein Concentrate 80%.
  • Lean muscle focus: Formulated around research tied to lean muscle support.
  • Routine-friendly format: 27 servings make it easier to build into a regular plan.
  • Flavor appeal: Cake Pop offers a dessert-inspired option for daily use.

If you want a protein powder that emphasizes formula design, not just protein quantity, this is the kind of detail worth prioritizing. The ingredient structure is the core benefit, because it shapes how the product supports your training goals over time.

What to look for before you buy

A disciplined approach to choosing protein powder starts with a short checklist. First, identify your main goal. If you want support for lean muscle, pay close attention to whether the formula uses one protein source or a blend. PEScience Select Protein is designed around a combination of whey and casein, making protein source a central part of its value.

  1. Check the first ingredient. A first ingredient can tell you a lot about the formula. Here, Milk Protein Isolate leads the blend.
  2. Look at the protein strategy. Some shoppers prefer a single-source powder, while others want a combination designed for both immediate and sustained support.
  3. Consider daily usability. Flavor and serving count matter because consistency matters. A product you enjoy is easier to use regularly.
  4. Match the formula to your routine. If you use protein often, a thoughtfully built blend may be more aligned with your long-term habits.

Choosing well is less about chasing trends and more about understanding the formula. When a product clearly explains why its ingredients were selected, it becomes easier to decide whether it fits your goals. That clarity can help you shop with more confidence and build a routine you can stick with.

Pro Jym
$44.99
GNCAMP Pure Isolate New
$69.99
Protein Powder - Unflavored (16 Servings)
$42.99
Molk Protein Powder - Vanilla Milkshake (28 Servings)
$49.99
Molk Protein Powder - Chocolate Milkshake (26 Servings)
$49.99

Fuel your next step with confidence

Big goals are built through steady choices, and finding the right protein powder is one of them. At GNC, the focus is on helping you shop with clarity through a curated selection built around purpose, quality, and trusted guidance.

PEScience Select Protein fits that mindset with a formula centered on ingredient strategy. By combining Milk Protein Isolate and Whey Protein Concentrate 80%, it gives shoppers a clear reason behind the blend and a straightforward way to support lean muscle goals.

When you are ready to choose with more intention, GNC is here to help fuel the effort behind your routine. The right formula can make daily nutrition feel more focused, more consistent, and more aligned with what you are working toward.

What should I look at first when deciding if PEScience Select Protein is the right protein powder for me?
Why does PEScience Select Protein use both whey and casein instead of only one protein source?
Is PEScience Select Protein a good choice if I want support for lean muscle?
How important is the first ingredient when evaluating PEScience Select Protein?
Should flavor and serving count matter when choosing PEScience Select Protein?
What makes PEScience Select Protein worth considering for regular protein users?
PRO ACCESS BOGO 50% Off Mix-and-Match
ISO100 Hydrolyzed - Gourmet Chocolate (20 Servings)
$5499
Details
Ingredients
How To Use
Shipping and Returns

GET DYMATIZED®

Award-Winning, Easy-Mixing, Fast-Digesting, ISO100® Hydrolyzed 100% Whey Protein Isolate For Muscle Support.

Each serving contains 25 grams of protein from easy to mix, easy to digest, great-tasting, fast-absorbing, 100% whey protein isolate. Available in a variety of delicious, indulgent flavors, ISO100 is the perfect before-workout, after-workout, anytime protein.

THE DIFFERENCE BETWEEN HAVING GOALS & CRUSHING THEM IS ISO100.

ISO100 is simply muscle-building fuel. If your goal is gaining muscle size and strength, then ISO100 is your perfect workout partner. Loaded with muscle-building amino acids, ISO100 can support even the most serious resistance-training programs.

BENEFITS BEYOND THAT OF TYPICAL PROTEIN POWDERS.

The protein in ISO100 combination of hydrolyzed and whey protein isolates, without any fillers or added supplements. The hydrolyzed whey protein isolate has been partially broken down into smaller proteins and peptides, ensuring rapid and easy digestion for optimal absorption of muscle-building amino acids.

KNOWN WORLDWIDE FOR QUALITY, TASTE AND PURITY.

ISO100 is formulated using a cross-flow microfiltration, multi-step purification process that preserves important muscle-building protein fractions while removing excess carbohydrates, fat, lactose, and cholesterol.

REAL SCIENCE & QUALITY

Our products are formulated using the latest science. We test our products in university science. We test our products in university studies and elite training facilities. Our protein powders are manufactured at GMP Certified facilities ensuring all ingredients and final products are validated clean and safe. They are banned substance tested by informed-Choice.

Recent Reviews

Great product thanks

carlos aVerified Buyer

Not your typical Birthday Cake flavour.

Worst taste ever. I had to combine with vanilla powder to be able to finish product. Will not be buying again.

luis rVerified Buyer

Wrong flavor

Was sent the wrong flavor twice

jonzel mVerified Buyer

Wrong flavor

Sent me 2 of the same flavors I didn't order.

jonzel mVerified Buyer

Great product, great price ? fast delivery

judy bVerified Buyer

Best protein

Very smooth with mixing and taste profile is great as well. Super balanced protein

jonathan mVerified Buyer

Great Chocolate Flavor

russell sVerified Buyer

Tastes good

walt wVerified Buyer

Excellent quality

paul mVerified Buyer

Spot on Flavor

Great job by Dymatize! Protein is as good as it always is, and the flavor is spot on with the fruity pebbles. It mixes well. Good with water or juice. I tried it with coffee by chance wasn't bad, but wouldn't do it again. lol

nolan sVerified Buyer