Get the only naturally sweetened and flavored micellar casein powder made with Truly Grass Fed™ certified milk from antibiotic- and hormone-free, pasture-raised cows in Ireland. Formulated to be gentle on the stomach, it’s easy to digest and designed to prevent bloating or discomfort, making it the perfect choice for clean, slow-digesting protein.

Each serving delivers 21 grams of premium grass-fed protein, including 9 grams of essential amino acids and 4.2 grams of BCAAs to support muscle growth, recovery, and overall performance.

• Naturally sweetened and flavored — with no added sugars, soy, gluten, artificial sweeteners, flavors, food dyes, fillers, or any other unnecessary additives.
• Rigorously tested for purity and potency in a state-of-the-art, ISO 17025-accredited third-party laboratory to ensure superior quality and safety.

Legion Casein+ Ingredients (25 grams per serving)

Truly Grass Fed™ Micellar Casein Protein Powder (21 grams per serving)

Micellar casein is the highest-quality form of casein protein, carefully produced to preserve its slow-digesting properties. It delivers a stellar amino acid profile, providing 9 grams of essential amino acids per serving, making it one of the best proteins for sustained muscle recovery and growth.

But Casein+ goes beyond being just “grass-fed.” It’s made with pure, non-GMO, Truly Grass Fed™ certified micellar casein — ensuring superior quality, purity, and sustainability you can trust.

This matters because, in the United States, there’s no legal definition for “grass-fed” dairy. Many companies feed cows grain most of their lives, let them graze minimally, and still market their products as “grass-fed” — even “100% grass-fed.”

Without third-party certification, these claims rely entirely on an honor system. And in a supplement industry known for misleading marketing tactics, that’s a risk.

That’s why we chose Ireland’s Truly Grass Fed™ certification — the gold standard of quality assurance. It guarantees:

• 95% grass-based diet for healthier, cleaner protein
• 250 days per year on open pastures for better animal welfare
• Independent inspections to verify strict compliance and integrity

With Casein+, you get what most “grass-fed” proteins only promise — proven quality, superior nutrition, and ethical sourcing.

Research shows that casein protein supplementation may:

• Boost muscle growth and strength when combined with resistance training
• Improve recovery and reduce soreness after exercise
• Support muscle retention while dieting
• Aid weight loss by enhancing satiety and preserving lean mass

There’s no single clinically effective dose of casein protein. Instead, use Casein+ to help you reach your daily protein goals:

• 0.8 to 1 gram per pound of body weight per day
• Or 1 gram per centimeter of height if you have significant weight to lose

Naturally Sweetened and Flavored

While artificial sweeteners may not be as harmful as some believe, research suggests that regular consumption of these chemicals may negatively affect overall health.

That’s why we choose clean, natural alternatives — using only plant-based sweeteners like stevia, erythritol, and monk fruit. These options are not only safe and well-researched, but studies show they may also provide additional health benefits, including:

• Improved nutrient absorption
• Healthier cholesterol levels
• Reduced inflammation
• Better metabolic balance and overall wellness

By focusing on natural, science-backed ingredients, we ensure our products are safer, healthier, and better for your body — without compromising on taste or quality.

No Artificial Food Dyes, Fillers, or Other Unnecessary Junk

Just like artificial sweeteners, research shows that artificial food dyes and fillers can cause negative effects in some individuals, including gastrointestinal toxicity and behavioral issues.

That’s why we prioritize clean, natural ingredients by using:

• Natural colorings and flavorings derived from fruits and other plant-based sources
• Naturally derived ingredients that enhance texture and improve overall product quality
• Safe, high-quality components that extend shelf life and streamline the manufacturing process — without compromising purity or performance

The result? Cleaner, safer, and better-tasting products you can trust.

Third-Party Lab Tested for Purity and Potency

Casein+ undergoes rigorous testing in a state-of-the-art, ISO 17025-accredited third-party laboratory to ensure the highest standards of quality, safety, and purity. Every batch is thoroughly analyzed for heavy metals, microbes, allergens, and other potential contaminants, guaranteeing full compliance with FDA purity standards.

Made in the USA with Globally Sourced Ingredients

If you want to be confident that the supplements you take every day are truly safe, effective, and high-quality, choose a company that:

• Sources ingredients from premium, globally trusted suppliers — because exceptional supplements start with the finest raw materials.
• Tests every product in accredited third-party laboratories to verify purity, potency, and safety with scientifically validated results.
• Manufactures in the USA, adhering to some of the strictest quality, safety, and regulatory standards in the world.