Old School Labs
Free Protein. Bigger Muscles.

Get Your FREE Vintage BRAWN™ Samples + Shaker

Try our BEST-SELLING & DELICIOUS blend of the three highest-quality protein isolates to maximize muscle growth and recovery!

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Vintage Brawn™ Chocolate Samples + Black Shaker

What you get:

• 2x Vintage Brawn™ sachets
• OSL ProShaker 28oz shaker bottle

Rich ChocolateLemon CheesecakeTiramisuVanilla MilkshakeBanana MilkshakeChocolate + Vanilla

(You only pay for shipping & handling)


Don’t limit yourself with simple proteins like whey. Muscles responds better to multi-source proteins. They respond to Vintage BRAWN

Vintage BRAWN™ combines fast-, medium-, and slow-digesting proteins in one mouthwatering supplement to help provide you with a sustained release of muscle-building amino acids that lasts for hours.

Vintage Brawn

What Powers Vintage Brawn™


Milk Protein Isolate

The perfect combination of whey and casein protein sources to help provide your muscles with amino acids both immediately as well as for hours after consumption. This blended protein source eliminates nearly all sugar (lactose), fat, cholesterol, and junk commonly found in inferior protein sources to help you build quality lean muscle mass.


Egg White Protein

Egg protein is the most complete protein when compared to sources such as plant and animal protein. Egg protein has been proven to be even better at building lean muscle mass than whey. With its complete essential amino acid profile, egg white protein can support muscle recovery, growth, and strength.


Beef Protein Isolate

All the benefits of consuming a lean cut of beef, only much more concentrated and easier to digest. Beef protein isolate is perfect for those who are sensitive to and struggle with dairy. Unlike others in the industry, OSL uses fresh beef to create their BPI to help provide the highest quality beef protein isolate and amino acid profile.

Two Delicious Flavors to Choose From

Rich Chocolate Flavor

Rich Chocolate

Vanilla Milkshake Flavor

Vanilla Milkshake

Real Reviews, Real Results

Not all protein powders are created equal!

While using any protein powder is better than nothing, don’t you want a product that works harder and provides more benefits? After all, if you’re putting in the work at the gym, don’t you want the best results possible? That’s what Vintage BRAWN™ provides you with.

Three superior sources of protein combined into one product to not only help you recover faster from workouts and maximize your muscle-building potential but also be something you’ll look forward to drinking after your grueling workouts!

Premium Ingredients



Formulated in California

Formulated in


Third Party Tested



Grab your free samples of Vintage BRAWN™ along with your shaker bottle before they’re gone!

Keep it Old School

Disclaimer: The statements on this page have not been evaluated by the FDA. Any products seen or mentioned are not intended to diagnose, treat, cure, or prevent any disease. Old School Labs™ is a brand of COSIDLA Inc.

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