If you’re looking to increase your muscle mass effectively, choosing the right protein is key. At The Nutrition Store in Barcelona, we’ve helped hundreds of clients reach their goals with the best options on the market. Here’s everything you need to know.

The Key to Choosing an Effective Protein

We know that proteins are essential for muscle growth. When we train, we break muscle fibers that need to repair and strengthen. This is where proteins, especially those rich in essential amino acids and BCAAs (branched-chain amino acids), come in.

From our experience, the best protein for gaining muscle is a whey protein isolate enriched with digestive enzymes. Why? Because this type of protein combines three crucial factors:

High concentration of pure protein: A good isolate contains over 90% protein.
Fast absorption: Ideal for post-workout when muscles are “hungry.”
Easy digestion: Thanks to enzymes, it prevents bloating or stomach discomfort that some people experience with whey concentrates.

BCAA 1000 400 Caps

BCAA 4 – 325 gr. Blue Raspberry

BCAA 4 – 325 gr. Limon

What Makes Whey Protein Isolate the Best Option?

Over the years, we’ve tested dozens of muscle-building proteins, including different types of whey, and consulted with hundreds of clients. Here’s why this combination stands out:

Greater purity: Being virtually free of lactose and fats, isolate is purer than concentrate, making it perfect even for those with intolerances.
Optimized absorption: Digestive enzymes (like lactase and protease) ensure the body processes the protein efficiently, maximizing muscle synthesis.
Versatility: It’s ideal both for those looking to gain muscle mass and those aiming to lose fat without compromising muscle.

Our Personal Recommendation

Based on years of experience and client feedback, here are our top picks:

Proteïna ISO de American Nutrition
- Protein per serving: 26.7 g
- Advantage: Rapid absorption thanks to its Digestive Enzyme Complex family of enzymes.
Optimum Nutrition Gold Standard Isolate
- Protein per serving: 24 g
- Advantage: Excellent solubility and smooth digestion.
Amix IsoPrime CFM
- Protein per serving: 27 g
- Advantage: Includes DigeZyme digestive enzymes.

How to Maximize the Benefits of Your Protein

Post-workout: Your body needs nutrients to recover. Taking an isolate shake with water within the first 30 minutes post-workout is a game-changer.
At breakfast or between meals: If you struggle to meet your daily protein intake, add a shake.

Frequently Asked Questions

Is whey isolate better than concentrate?
Yes. Isolate has greater purity, is easier to digest, and contains less lactose and fat than concentrate.
Can I take protein if I’m in a calorie deficit?
Yes. Protein is essential for preserving muscle mass during weight loss.

Conclusion: The Best Protein Is…

A whey protein isolate with digestive enzymes. It guarantees maximum absorption, an optimal amino acid profile, and easy digestion. At The Nutrition Store, we help our clients choose the best protein according to their goals and tolerances.