Muscle Building Protein Powder Blend*
Sustained Release Protein with Amino Acids for Longer Muscle Building Benefits*
8.4  out of 10  (4,186 Reviews)
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For a limited time, buy 1 Phase8, 4.4 Lbs. & get 1 50% OFF!
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Product Overview

MuscleTech Phase8
Build Muscle, Size and Strength
  • Provides high biological value and sustained release protein*
  • 8 hours of amino acid delivery*
  • Increases muscle size and strength*

PHASE8 is a premium blended protein formula that feeds your muscles for 8 hours. Each scoop contains an impressive 26-gram blend of milk-derived proteins that supplies a sustained-release of amino acids. PHASE8 has a superior, clean macronutrient profile with only half the carbs and fat of the leading competitor.*

The main protein component in PHASE8 has the unique ability to release amino acids in your bloodstream for 8 hours after taking it.1 Because of these sustained-release properties, it’s a highly anabolic and anti-catabolic protein that helps create a muscle-building environment for longer periods of time.*


1. Lacroix et al., 2006. The American Journal of Clinical Nutrition. 84:1070-9.










Overall, PHASE8 contains only high-quality milk-derived protein sources designed to digest at different rates, putting your body in the perfect state for repair and recovery. Unlike other protein blends, you won’t find any low quality proteins like rice protein in PHASE8.

  • 97% Whey Protein Isolate
  • Hydrolyzed Whey Protein Isolate
  • Whey Protein Isolate
  • Whey Protein Concentrate
  • Milk Protein Concentrate
  • Calcium Caseinate
  • Micellar Casein
Protein 26g 22g 24g
Protein Sources All high-quality
proteins and
egg protein
Low biological value brown
rice protein along with egg
and milk-derived proteins
Carbs 8g up to 15g 9g
Fats 1.5g up to 6g 2g

PHASE8 contains a unique blend of proteins that allows you to take it whenever you need it. The multi-phase protein delivery supplies the needed quick release of amino acids for post-workout amino acid delivery, the medium release protein phase for between meals, and the slow-digesting protein phase for night time use.


PHASE8 was flavored by one of the world’s top flavoring houses by protein flavoring experts in order to taste better than any other protein on the market.

Ratings & Reviews

Overall Rating
4,186 Ratings
Verified Buyer Rating
1,219 Ratings
Average Flavor Rating
8 Flavors
Top Rated Flavor
Milk Chocolate
By clicking the button above, you agree to entering the Reviews section. Products in the Store are not intended to diagnose, treat, cure, or prevent any disease.
May 15, 2019
  • 8 Milk Chocolate

This product is really good for cutting and recovery, such a great taste and overall good product.

Apr 16, 2019
  • 10 Milk Chocolate

Very pleased with how this product, in combination with creatine and BCAA's, has been working to assist in my weight loss goals. I've struggled to lose the last 10-15 lbs of fat for the past few years. With the help of the aforementioned products, I am finally getting the results that I desired without sudden surges in hunger cravings that seemed to ruin my plans. The PHASE8 has been particularly helpful in shifting my caloric intake towards proteins and curbing my appetite.

Mar 04, 2019
Verified Buyer
  • 9 Milk Chocolate
  • 9 Vanilla

I enjoy this protein mix, really helps with recovery. My one and only gripe, this is less a powder and m,ore a dust. Makes a huge mess and has issues in my Ninja blender!

Dec 18, 2018
  • 8 Milk Chocolate

Great product that taste very good. At times dosent mix great but isn’t a problem. I’ve seen great results over the past few weeks and would recommend this product

Dec 18, 2018
  • 10 Milk Chocolate

This protein tastes wonderful! I tried the milk chocolate and it is one of the better tasting chocolate flavored proteins, and I have tried many. The powder mixes very easily, I never had trouble getting it to mix evenly. Being a protein blend, the consistency was very nice and creamy. Very impressed!

Dec 18, 2018
  • 10 Milk Chocolate

I am the worst about protein shakes. I have tried 40-50 different ones and they all gross me out so I have to chug them! This one ACTUALLY tastes good! I wouldn’t mix with milk though, it is very thick!

Dec 17, 2018
  • 10 Milk Chocolate
  • 10 Cookies and Cream

These are really delicious. I would recommend.

Dec 16, 2018
  • 10 Milk Chocolate

I absolutely love the chocolate flavor of this. Yeah it is a bit chalky tasting but great flavor nonetheless. It mixes pretty well in water but with milk it was a bit too thick. The results have been decent while using this though compared to some others I've tried. I like that it is a slow digesting protein. Price isn't bad either

Dec 14, 2018
  • 8 Milk Chocolate

I've been taking phase 8 now for a few weeks. I notice I'm a lot less hungry between meals while taking this. I also wake up a lot less hungry when I take it before bed. I have had improvements in both muscle strength and endurance as well. Compared to nitro tech, this milk chocolate is not as good though I would say the multiple sources of protein is to blame. Be prepared to add more water than normal for a non chalky taste. Better than most other protein powders though. Good product.

Dec 14, 2018
  • 8 Milk Chocolate

First time using this product and brand for an after workout protein. I have been using this product for a few weeks now and I am enjoying using it. The milk chocolate taste is great, I use it with almond milk. I usually have it around lunch time, so it keeps me satisfied until dinner. The only little downside is that It does take a little more time to shake in a blender cup so there isn’t any clumps. Overall I enjoyed adding this product after my workouts.

Dec 14, 2018

Disclaimer: I was selected to be part of MuscleTech’s ambassador program so I received a free sample of MuscleTech Phase 8. I chose to receive the chocolate flavor and at first was disappointed. It seemed chalky to me BUT was able to fix this by adjusting the water to thin it out. Overall it was good and easy to drink. I work out first thing in the morning on average 5 days a week and I take Phase 8 between breakfast and lunch with water. My second serving is taken before bed with milk and some water to thin it out. I have only been taken it for a little over two weeks and can see some results. The 2.2lb jug is good for about 24 servings, would love to see result if I took for at least 2 months consistently I have noticed an increase in muscle size and strength. I feel with the time release protein it has helped me with recovery and keeping soreness at bay. I plan on buying some more in larger quantities.

Dec 14, 2018

I've been using this protein for a few weeks now and I love it! Mixes up nicely and tastes amazing even with water. I love that it is a blended protein, and it keeps me feeling full so I don't cheat between meals. I will definitely be purchasing this protein again and definitely recommend it!

Dec 13, 2018
  • 10 Milk Chocolate

This product is one of my new favorites. I personally use a scoop with some almond milk and the flavor is unbeatable. A serving contains just 15 calories from fat versus 26 grams of protein, so this product can be taken by just about anybody. I highly recommend this product to anyone who wants to see quick and significant results in their muscle tone, strength, and endurance.

Dec 13, 2018

I've tried a lot of different proteins and this one is really good. The flavor of this supplement is excellent. I was worried about the size of the scoop as it seems like it is larger than what I am used to but it is just fine. I added too much water on my first use and didn't lose any of the flavor. I recommend trying this product.

Dec 13, 2018
  • 7 Milk Chocolate

Have been using phase 8 on and off over the last few years, plan on using it for years to come. Its affordable, usually has a good deal going on and keeps your hunger controlled when meals are spaced out. FLAVOR - chocolate is what youd expect, maybe a bit chalky but that's never bothered me. POWDER - fine and mixed well in water. Can be very thick with milk and sticks to the top of the mixer so advised using the blender ball and shaking for a bit longer than you would with water. This is a great option to start with, haven't noticed digestion issues and the 1 casein powder I've always come back to mainly due to peanut butter chocolate tasting so **** good.

2 Sizes
2.2 Lbs.
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Milk Chocolate
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Price: $25.99  ($1.08 / Serving)
Flavor Rating: 8.6

What's in MuscleTech Phase8

Serving Size 1 Scoop (42 g)
Servings Per Container Approx.24
Amount Per Serving % Daily Value
Calories 150       
Calories From Fat 15       
Total Fat 1.5 g 2%*
Saturated Fat 1 g 5%*
Cholesterol 50 mg 17%
Total Carbohydrate 8 g 3%*
Dietary Fiber less than 1g 2%*
Sugars 1 g
Protein 26 g 52%*
Calcium 470 mg 47%
Iron .9 mg 5%
Sodium 210 mg 9%
* Percent Daily Values are based on a 2,000 calorie diet
† Daily Value not established
Protein Blend (Whey Protein Concentrate, Milk Protein Isolate [Supplying Micellar Casein and Whey], Micellar Casein, Calcium Caseinate, Whey Protein Isolate 97%, Whey Protein Isolate, Hydrolyzed Whey Protein Isolate), Maltodextrin, Cocoa (Processed With Alkali), Natural and Artificial Flavors, Gum Blend (Cellulose Gum, Xanthan Gum, Carrageenan), Salt, Calcium Carbonate, Enzyplex (Papain, Amylase), Silicon Dioxide, Acesulfame-Potassium, Sucralose, Soy or Sunflower Lecithin.
Contains milk and soy ingredients. Processed in a facility that processes wheat, egg, tree nut, fish and shellfish ingredients.

Directions For Phase8: Mix 1 serving (1 scoop) with 8 oz. of cold water or skim milk in a glass or shaker cup. For best results, mix 2 servings (2 scoops) with 16 oz. of water or skim milk. Use between major meals and after exercise. Drink 8 to 10 glasses of water daily. For maximum results, consume 4 scoops daily for a minimum of 6 weeks.

Warnings: Do not use if pregnant or nursing. Consult a medical doctor if you have a medical condition or before starting any diet or exercise program. KEEP OUT OF REACH OF CHILDREN.

Do not use if packaging has been tampered with. Store in a cool, dry place (60°F to 80°F).

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
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