---
product_id: 51137031
title: "Old School Labs Protein Powder Isolate Sourced from Egg, Milk,& Beef - Made for Men & Women for Building Muscle & Post-Workout Recovery - Zero Sugar, Rich Chocolate Flavor - 30 Servings"
brand: "old school labs"
price: "€ 112.19"
currency: EUR
in_stock: true
reviews_count: 9
category: "Old School Labs"
url: https://www.desertcart.hr/products/51137031-old-school-labs-protein-powder-isolate-sourced-from-egg-milk
store_origin: HR
region: Croatia
---

# zero sugar, rich chocolate 3-source isolate blend fast + sustained absorption Old School Labs Protein Powder Isolate Sourced from Egg, Milk,& Beef - Made for Men & Women for Building Muscle & Post-Workout Recovery - Zero Sugar, Rich Chocolate Flavor - 30 Servings

**Brand:** old school labs
**Price:** € 112.19
**Availability:** ✅ In Stock

## Summary

> 💪 Elevate your muscle game with the protein blend that’s rewriting the rules.

## Quick Answers

- **What is this?** Old School Labs Protein Powder Isolate Sourced from Egg, Milk,& Beef - Made for Men & Women for Building Muscle & Post-Workout Recovery - Zero Sugar, Rich Chocolate Flavor - 30 Servings by old school labs
- **How much does it cost?** € 112.19 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/51137031-old-school-labs-protein-powder-isolate-sourced-from-egg-milk)

## Best For

- old school labs enthusiasts

## Why This Product

- Trusted old school labs brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Clean & Pure:** Zero sugar, no artificial fillers—just natural flavors and stevia for guilt-free indulgence.
- • **Flavor That Wins:** Rich chocolate with a hint of sea salt elevates your protein game beyond the ordinary.
- • **Mixes Like Magic:** Smooth, lump-free shakes every time—perfect for busy pros on the go or post-gym rituals.
- • **Fast & Lasting Fuel:** Rapid absorption meets slow digestion to keep your muscles fed post-workout and between meals.
- • **Tri-Source Powerhouse:** Egg, milk & beef isolates for a complete amino acid profile fueling muscle growth like no other.

## Overview

Old School Labs Vintage Brawn Protein Powder delivers 24g of premium protein per serving from a unique blend of egg, milk, and beef isolates. Designed for men and women serious about muscle building and recovery, it offers fast yet sustained absorption with zero added sugar. Available in rich chocolate and other natural flavors, it mixes smoothly for a delicious, clean shake that supports your fitness goals without compromise.

## Description

Best Sellers Visit the Store Best Sellers Visit the Store New Launches Visit the Store New Launches

Review: Another outstanding product from OSL: Innovative ingredients, Great taste, and Fairly priced from a company with integrity! - LONG AND EXHAUSTIVE REVIEW: Over the last couple of years Old School Labs has quickly grown into a well known and successful supplement company, and with very good reason. They consistently produce high quality products that taste excellent, have top shelf ingredients, are fairly priced, and they do all this with some of the best customer service I've ever experienced. Ingredients - One thing I want to point out about this protein is that it is NOT WHEY ISOLATE. Whey Isolate is everywhere, do you know why? It's cheap and it mixes easily. As the label points out, whey is a byproduct of the cheese-making process. Now there's nothing wrong with whey concentrate/isolate, I use some myself but it's important to note this is not what OSL is going for here. Whey isolate has two big knocks against it; it's rapidly digested and highly insulinogenic, and it often contains less optimal levels of various amino acids made worse by some companies unscrupulously adding in cheap fillers, a process known as nitrogen spiking. Think of protein like Legos. We might refer to them all as Legos but there's lots of different types and some are rarer than others. Some are better at building certain things than others. Similarly, we collectively refer to all amino acids as proteins, but some are basically filler (non-essential) and some are very effective but rare (essential). Cheapskate brands might say their product has 30g of protein per serving but they're hiding the fact that most of the amino acids are common and non-essential aminos like glutamic acid and glycine. Now, let's look at what OSL has created here; there's egg white protein, which has an excellent amino acid profile that's high in leucine (I'll let you google how important leucine is for muscle growth on your own time) as well as sulfur compounds excellent for the human metabolism, and is absorbed extremely efficiently to boot. There's Milk Protein Isolate, which contains casein and whey in milks natural 80/20 ratio. Casein is a slow digesting protein perfect for combating catabolism; whey is quickly digested and spikes insulin, making it perfect post workout. And finally beef protein isolate, which again has an excellent amino acid profile similar to eating a steak but unlike whey has been shown to prolong protein synthesis over a longer time span (up to 3 hours). Further studies have suggested that with regards to muscle growth the most effective method is to prolong protein synthesis over a long period of time as opposed to concentrating protein intake over a fewer number of meals. So to sum up, what you have here is a protein that covers all your bases; it has fast and slow digesting proteins that are absorbed well and contain quality amino acids to promote muscle growth. I'll throw in too that I appreciate the use of stevia as a sweetener. When it comes to things I consume on a regular basis I try to avoid artificial sweeteners, flavors and food dyes and OSL is a company that provides those type of products. Taste/Texture - With any protein supplement, taste is critical. If you don't enjoy drinking the product you're not going to use it regularly and benefit. I wrote the ingredient section first because I wouldn't want someone who's only every drank whey isolate to not know that about this product going in. Again, whey is everywhere because it's a cheap byproduct and happens to mix very easily. I've had just about every type of protein powder from micellar casein, to hemp, to beef isolate and egg and whey isolate tends to be the easiest to mix. That being said, for sticking to their guns and making an innovative product that will likely be more efficacious for consumers OSL has also done a great job in the taste and texture department. OSL mentions that salt is an ingredient here because it helps bring out the chocolate flavor and I think that was a smart move. Egg white protein and beef protein typically have a slight saltiness to them and playing off that rather than try to hide it is the way to go. If you enjoy sea salt caramel you'll understand what I'm talking about here. To be real specific I'm actually reminded of the sea salt chocolate flavored RX bars if anybody has had those. Texture and consistency wise this shake is a winner; it's thick and luscious without that slimy feel that some shakes thickened with xanthan gum can get (Brawn used guar gum). I've prepared this product in both a blender and a shaker bottle and I do recommend the blender for the best possible mouth-feel. Customer Service - I've always received excellent customer service from OSL. I've received many personal emails in response to questions, they constantly run great deals and specials, and their loyalty program saves me a ton of money. It's hard to get this kind of service from people you interact with face to face and here OSL is just killing it from across the country. So to sum up, OSL has created an innovative product with high quality ingredients and avoided taking the easy route of flooding the market with another whey isolate. They've managed to make said product tasty with an excellent consistency, and they're priced it to be competitive with the standard junk on the market (not to mention they give automatic rebates when you enroll in the loyalty program) And you can rest assured that you'll always get the absolute best in customer service. I plan on being an OSL customer for a long time to come, and I hope you'll consider becoming one too.
Review: Another Quality Product From OSL - I've always wondered why OSL didn't have a protein powder in their product lineup. With all the brands out there (good or bad), what was keeping them from releasing their own protein? I guess they wanted to get it right the first time and not just put out another protein powder on the market. I was very eager to try this out. There are too many companies out there that use cheap whey and pack their protein garbage ingredients like soy, and artificial flavors. One of the many things I've admired about OSL is their use of quality ingredients. I've never seen anything like soy or sucralose in any product I use from OSL. My stomach is very sensitive to the majority of the protein products out there today. Until now I've only been able to use whey ISOLATE by 3 other brands that haven't made my stomach upset. This is a blend of Milk protein isolate, Beef protein isolate, and Egg protein isolate. Thankfully it is gentle on my stomach. I'm very happy with this product and glad that OSL has put a QUALITY protein on the market. Take a look at the ingredients. "WAY BETTER THAN WHEY: If you’re looking for a protein that’s more effective at building muscle and tastier than whey, you’ve found it! Vintage Brawn is the first to combine the isolate forms of the three most-prized protein sources Golden Era athletes relied on to build their lean muscle mass and speed recovery – a protein drink that’s richer and tastier than any naturally flavored whey. Made from US farm-raised eggs, New Zealand hormone-free milk, and USDA beef. THE REAL PROTEIN: Made exclusively from the best forms of the “Big Three”: egg protein (isolate), milk protein (isolate), and beef protein (isolate). Third-party tested with zero concentrates, zero artificial substances, zero synthetic additives, zero preservatives, and no added aminos (typically used to cheaply and artificially “spike” the total protein-per-serving figure). We stand by Vintage Brawn as the best muscle-building protein powder supplement on the market or your money back. " Taste Good Mixes Well Easy on my stomach. I recommend this protein and will be buying this again. I would love to have an option for a 5lb tub.

## Features

- THREE-SOURCE ISOLATE BLEND: Our Vintage Brawn combines egg, milk, and beef protein isolates into a multi-source formula designed to support muscle recovery and daily protein intake beyond single-source protein powders.
- FAST ABSORPTION, LASTING SUPPORT: Our isolate blend is formulated to absorb quickly while digesting more gradually, helping support muscle repair after workouts and sustained protein availability between meals.
- 24G PROTEIN, COMPLETE AMINO ACIDS: Each scoop delivers 24g of protein sourced from egg, milk, and beef isolates, providing a complete essential amino acid profile with no added sugar to support daily training and recovery.
- SMOOTH, EASY-MIX FORMULA: Our protein powder mixes easily with water for a smooth, lump-free shake, making preparation simple whether you’re at home, in the gym, or on the go.
- AVAILABLE IN NATUAL FLAVORS: Our protein powder is available in Vanilla, Banana, Tiramisu, and Chocolate, giving you flavorful options to fit your taste preferences and daily routine.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B071KB7GHH |
| Age Range Description | Adult |
| Allergen Information | Gluten Free |
| Best Sellers Rank | #79,549 in Health & Household ( See Top 100 in Health & Household ) #193 in Sports Nutrition Protein Powder Blends |
| Brand | Old School Labs |
| Brand Name | Old School Labs |
| Customer Reviews | 4.5 out of 5 stars 1,453 Reviews |
| Diet Type | Keto |
| Flavor | Chocolate |
| Item Dimensions | 8.9 x 5.92 x 5.92 inches |
| Item Nype Name | Protein powder blend |
| Item Weight | 2.1 Pounds |
| Manufacturer | Old School Labs |
| Manufacturer Part Number | Vintage Brawn Chocolate |
| Material Type Free | Sugar Free |
| Model Number | 1082079 (CR) |
| Number of Items | 1 |
| Package Type Name | Bottle |
| Product Benefits | Supports muscle recovery, Supports daily protein intake, Provides complete amino acid profile, Supports post-workout nutrition, Helps maintain consistent protein intake |
| Protein Source | Blend |
| Recommended Uses For Product | Post-workout recovery, Anytime protein supplementation, Daily fitness nutrition, Training day protein support, Rest day protein intake |
| Servings per Container | 30 |
| Total Servings Per Container | 30 |
| UPC | 853784006047 |
| Unit Count | 35.68 Ounce |
| Warranty Description | We want you to experience all our products, and to keep enjoying those that fit your goals. This is why we offer our products with a 100% money-back guarantee. Buy any product, and if for any reason you are not satisfied with it, contact us for a full refund. We don’t require the return of the bottle in question for first-purchases, and do not make you jump through hoops to get your money back if … |

## Product Details

- **Brand:** Old School Labs
- **Flavor:** Chocolate
- **Item Weight:** 2.1 Pounds
- **Material Type Free:** Sugar Free
- **Servings per Container:** 30

## Images

![Old School Labs Protein Powder Isolate Sourced from Egg, Milk,& Beef - Made for Men & Women for Building Muscle & Post-Workout Recovery - Zero Sugar, Rich Chocolate Flavor - 30 Servings - Image 1](https://m.media-amazon.com/images/I/71W-nmWdT2L.jpg)
![Old School Labs Protein Powder Isolate Sourced from Egg, Milk,& Beef - Made for Men & Women for Building Muscle & Post-Workout Recovery - Zero Sugar, Rich Chocolate Flavor - 30 Servings - Image 2](https://m.media-amazon.com/images/I/71YNcMIDoaL.jpg)
![Old School Labs Protein Powder Isolate Sourced from Egg, Milk,& Beef - Made for Men & Women for Building Muscle & Post-Workout Recovery - Zero Sugar, Rich Chocolate Flavor - 30 Servings - Image 3](https://m.media-amazon.com/images/I/713YWr6SfML.jpg)
![Old School Labs Protein Powder Isolate Sourced from Egg, Milk,& Beef - Made for Men & Women for Building Muscle & Post-Workout Recovery - Zero Sugar, Rich Chocolate Flavor - 30 Servings - Image 4](https://m.media-amazon.com/images/I/71o7cGfl+sL.jpg)
![Old School Labs Protein Powder Isolate Sourced from Egg, Milk,& Beef - Made for Men & Women for Building Muscle & Post-Workout Recovery - Zero Sugar, Rich Chocolate Flavor - 30 Servings - Image 5](https://m.media-amazon.com/images/I/71qdU5wnEQL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Another outstanding product from OSL: Innovative ingredients, Great taste, and Fairly priced from a company with integrity!
*by Z***S on December 3, 2017*

LONG AND EXHAUSTIVE REVIEW: Over the last couple of years Old School Labs has quickly grown into a well known and successful supplement company, and with very good reason. They consistently produce high quality products that taste excellent, have top shelf ingredients, are fairly priced, and they do all this with some of the best customer service I've ever experienced. Ingredients - One thing I want to point out about this protein is that it is NOT WHEY ISOLATE. Whey Isolate is everywhere, do you know why? It's cheap and it mixes easily. As the label points out, whey is a byproduct of the cheese-making process. Now there's nothing wrong with whey concentrate/isolate, I use some myself but it's important to note this is not what OSL is going for here. Whey isolate has two big knocks against it; it's rapidly digested and highly insulinogenic, and it often contains less optimal levels of various amino acids made worse by some companies unscrupulously adding in cheap fillers, a process known as nitrogen spiking. Think of protein like Legos. We might refer to them all as Legos but there's lots of different types and some are rarer than others. Some are better at building certain things than others. Similarly, we collectively refer to all amino acids as proteins, but some are basically filler (non-essential) and some are very effective but rare (essential). Cheapskate brands might say their product has 30g of protein per serving but they're hiding the fact that most of the amino acids are common and non-essential aminos like glutamic acid and glycine. Now, let's look at what OSL has created here; there's egg white protein, which has an excellent amino acid profile that's high in leucine (I'll let you google how important leucine is for muscle growth on your own time) as well as sulfur compounds excellent for the human metabolism, and is absorbed extremely efficiently to boot. There's Milk Protein Isolate, which contains casein and whey in milks natural 80/20 ratio. Casein is a slow digesting protein perfect for combating catabolism; whey is quickly digested and spikes insulin, making it perfect post workout. And finally beef protein isolate, which again has an excellent amino acid profile similar to eating a steak but unlike whey has been shown to prolong protein synthesis over a longer time span (up to 3 hours). Further studies have suggested that with regards to muscle growth the most effective method is to prolong protein synthesis over a long period of time as opposed to concentrating protein intake over a fewer number of meals. So to sum up, what you have here is a protein that covers all your bases; it has fast and slow digesting proteins that are absorbed well and contain quality amino acids to promote muscle growth. I'll throw in too that I appreciate the use of stevia as a sweetener. When it comes to things I consume on a regular basis I try to avoid artificial sweeteners, flavors and food dyes and OSL is a company that provides those type of products. Taste/Texture - With any protein supplement, taste is critical. If you don't enjoy drinking the product you're not going to use it regularly and benefit. I wrote the ingredient section first because I wouldn't want someone who's only every drank whey isolate to not know that about this product going in. Again, whey is everywhere because it's a cheap byproduct and happens to mix very easily. I've had just about every type of protein powder from micellar casein, to hemp, to beef isolate and egg and whey isolate tends to be the easiest to mix. That being said, for sticking to their guns and making an innovative product that will likely be more efficacious for consumers OSL has also done a great job in the taste and texture department. OSL mentions that salt is an ingredient here because it helps bring out the chocolate flavor and I think that was a smart move. Egg white protein and beef protein typically have a slight saltiness to them and playing off that rather than try to hide it is the way to go. If you enjoy sea salt caramel you'll understand what I'm talking about here. To be real specific I'm actually reminded of the sea salt chocolate flavored RX bars if anybody has had those. Texture and consistency wise this shake is a winner; it's thick and luscious without that slimy feel that some shakes thickened with xanthan gum can get (Brawn used guar gum). I've prepared this product in both a blender and a shaker bottle and I do recommend the blender for the best possible mouth-feel. Customer Service - I've always received excellent customer service from OSL. I've received many personal emails in response to questions, they constantly run great deals and specials, and their loyalty program saves me a ton of money. It's hard to get this kind of service from people you interact with face to face and here OSL is just killing it from across the country. So to sum up, OSL has created an innovative product with high quality ingredients and avoided taking the easy route of flooding the market with another whey isolate. They've managed to make said product tasty with an excellent consistency, and they're priced it to be competitive with the standard junk on the market (not to mention they give automatic rebates when you enroll in the loyalty program) And you can rest assured that you'll always get the absolute best in customer service. I plan on being an OSL customer for a long time to come, and I hope you'll consider becoming one too.

### ⭐⭐⭐⭐⭐ Another Quality Product From OSL
*by T***R on December 19, 2017*

I've always wondered why OSL didn't have a protein powder in their product lineup. With all the brands out there (good or bad), what was keeping them from releasing their own protein? I guess they wanted to get it right the first time and not just put out another protein powder on the market. I was very eager to try this out. There are too many companies out there that use cheap whey and pack their protein garbage ingredients like soy, and artificial flavors. One of the many things I've admired about OSL is their use of quality ingredients. I've never seen anything like soy or sucralose in any product I use from OSL. My stomach is very sensitive to the majority of the protein products out there today. Until now I've only been able to use whey ISOLATE by 3 other brands that haven't made my stomach upset. This is a blend of Milk protein isolate, Beef protein isolate, and Egg protein isolate. Thankfully it is gentle on my stomach. I'm very happy with this product and glad that OSL has put a QUALITY protein on the market. Take a look at the ingredients. "WAY BETTER THAN WHEY: If you’re looking for a protein that’s more effective at building muscle and tastier than whey, you’ve found it! Vintage Brawn is the first to combine the isolate forms of the three most-prized protein sources Golden Era athletes relied on to build their lean muscle mass and speed recovery – a protein drink that’s richer and tastier than any naturally flavored whey. Made from US farm-raised eggs, New Zealand hormone-free milk, and USDA beef. THE REAL PROTEIN: Made exclusively from the best forms of the “Big Three”: egg protein (isolate), milk protein (isolate), and beef protein (isolate). Third-party tested with zero concentrates, zero artificial substances, zero synthetic additives, zero preservatives, and no added aminos (typically used to cheaply and artificially “spike” the total protein-per-serving figure). We stand by Vintage Brawn as the best muscle-building protein powder supplement on the market or your money back. " Taste Good Mixes Well Easy on my stomach. I recommend this protein and will be buying this again. I would love to have an option for a 5lb tub.

### ⭐⭐⭐⭐ ... to do the multi-teared rating as there are some good point and some not good for this OSL offering
*by T***Z on December 1, 2017*

I'll try to do the multi-teared rating as there are some good point and some not good for this OSL offering. I'm a big fan of all of their product, have used/using Blast, Build, Burn, Boost with Blast and Build being my staples. Protein powders are hard to review. With no immediate effect and with the endless offerings and even more endless ages, body types, fitness level, and of course opinions you kind of just have to try them all until you find what you like. I'm mid 40's, 6'2" about 175. Work out 5-6 days a week. Both my knees are shot so do what I can with legs but all lighter weight. I use my protein twice a day, for a mid morning snack and post work out. I was excited to try Brawn as I know OSL uses the best ingredients in everything they make so this is where a 5 star comes in. To add, I can't really comment on effectiveness only using it for just shy of 2 weeks. Again harder to tell compared to other supplements that have a more instant effect like a PWO or even an amino, which are mostly based on how we feel during a work out or after. Again trusting the contents to give what the body needs for recovery. I can say it was not hard on my stomach and no ill affects on digestion. The other aspects that are reviewable are mix-ability and taste. Mix-ability - 2 stars: It mixes well considering it dissolves completely but I do not like how it seems to foam up and if taken immediately after shaking a small sip can seem like a mouthful. I have to let it sit for a bit and work at it over a couple of minutes. For taste in all honesty, it is just not good - 1 star: I know everyone has different taste buds so this has to be taken with a grain of salt, but to say it tastes amazing or great I think people are just sucking up - or getting paid to say it. As with other reviewers I've seen I'll agree it has a bitter taste and after taste and leaves my mouth filmy. I'm assuming is a product of all of the different proteins used I'm sure and just how it has to be. May work for some but definitely not for me. Unfortunately this is one OSL product I won't be buying again. 12/12/17 Update: I'm almost through the entire container and I will say the taste does take getting used to. I still won't say it taste "great" but it is bearable. I'll bump that up to a 3 star. The quality of ingredients used makes it compelling and because it's OSL overall maybe a just below 4 star? 3.8 but that could change too if I give it more time.

## Frequently Bought Together

- Vintage Brawn – Muscle-Building Protein Powder Isolate for Men & Women – Post-Workout & Anytime Recovery Drink – Premium Protein Isolate Sources: Egg, Milk, Beef – Rich Chocolate Flavor - 2.1 Lbs.
- 5000mg Micronized Creatine Monohydrate Powder + BioFit™ (Max Absorption) - Supports Muscle Growth, Strength, Endurance, Focus, Brain, Performance & Recovery - USA Made - Men & Women - 60 Servings
- Old School Labs Ultimate 2 Stage Pre Workout for Explosive Energy, Massive Pumps & Laser Focus - Preworkout for Men & Women - Pre Workout Powder with Amino Acids - Natural Ingredients & 250mg Caffeine

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-05-27*