What's in JYM Supplement Science Pro JYM
Serving Size: 1 Scoop (35g)
Servings Per Container: About 26
Amount Per Serving % Daily Value
Calories 140       
Calories From Fat 25       
Total Fat 2.5 g 4%**
Saturated Fat 2.5 g 13%**
Cholesterol 15 mg 5%
Total Carbohydrates 4 g 1%**
Sugars 1 g
Protein 24 g 48%**
Calcium 412 mg 41%
Sodium 120 mg 5%
Potassium 115 mg 3%
** Percent Daily Values are based on a 2000-calorie diet.
† Daily value not established.
Protein Blend (Whey Protein Isolate, Micellar Casein, Milk Protein Isolate, Egg Protein), Coconut-Based Creamer (Coconut Oil, Maltodextrin, Food Starch, Mono- and Diglycerides, Tricalcium Phosphate), Natural And Artificial Flavors, Gum Blend (Cellulose Gum, Xanthan Gum, Carrageenan), Sucralose, Acesulfame Potassium, FD&C Yellow No. 5, Silicon Dioxide, Sunflower Lecithin.
ALLERGEN WARNING: Contains EGG and MILK. Produced on shared equipment that also processes products that contain SOY, TREE NUTS, and WHEAT ingredients.

Directions For Pro JYM: Mix each scoop of Pro JYM in 6-12 oz. of water or milk depending on your preference for thickness and texture. Consume 1-2 scoops within 30 minutes before workouts, and 1-2 scoops within 30 minutes after workouts. Also consider taking 1-2 scoops when you first wake up each day and before going to bed for maximizing lean muscle mass gains. You can also consume 1-2 scoops between regular meals.

Warnings: Do not use as a sole source of nutrition. Do not exceed the recommended daily dose. Keep out of reach of children. Check with a qualified healthcare professional before taking this product if you are pregnant, nursing a baby, under 18 years of age, or if you have any known or suspected medical condition(s) and/or are taking any prescription or OTC medication(s). Concerning California Residents: This product contains a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm.

* 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.
JYM Supplement Science


24g of Pure, Quality Protein in Every Scoop with No Added Amino Acids or Filler Nutrients
A Pure Blend of High-Quality Proteins in Exact Amounts to Maximize Growth, Recovery, and Repair*
9.2  out of 10  (2,411 Reviews)
2 Sizes
2 Lbs.
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Price: $34.99  ($1.35 / Serving)
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Product Overview

Pro JYM. The anabolic protein powder created and used by Dr. Jim Stoppani. High Quality Protein Blend for Maximal Muscle Growth.

"JYM Supplement Science combines real science with best-in-class ingredients and precise doses to deliver unreal results. Pro JYM is my exclusive protein blend designed to help you build muscle, recover faster, and train stronger. Whether you want to boost strength, add size, or get shredded, Pro JYM is for you. It's a powerful blend of proteins that add up to pure muscle fuel."

Grow Like a Pro

Each scoop of Pro JYM delivers 24 grams of pure, quality protein. It’s not "spiked" with single amino acids to artificially increase the protein content or made with cheap and inferior whey protein concentrate or caseinates. To make Pro JYM, I selected only the highest quality whey protein isolate, micellar casein, milk protein isolate, and egg white protein (egg albumin).

The 24 grams of protein in each scoop of Pro JYM contain the following:• Whey protein isolate: 7.5g

  • Whey protein isolate: 7.5g
  • Micellar casein: 7g
  • Egg albumin: 2.5g
  • Milk protein isolate: 7g (5.5g casein, 1.5g whey)

Since milk protein isolate is 20 percent whey protein and 80 percent micellar casein, the 24 grams of protein in Pro JYM are really broken down into three main categories:

Protein chart
A Blend is Best

While a high-quality protein powder should be at the top of everyone's supplement shopping list, don't make the common mistake of buying a pure whey protein powder right off the bat. Yes, whey protein is a critical staple for muscle growth, but to truly maximize growth, you need more than just whey. You need a precise blend of performance proteins.

Whey is a very fast-digesting protein. The rapid rate of digestion is one of whey's benefits, but on its own, this quality can actually be a downfall. Because whey digests so fast, it quickly boosts muscle protein synthesis (MPS). However, it only boosts MPS for a short amount of time.

Research now shows that when you add medium-digesting and slow-digesting proteins to whey, muscle protein synthesis remains elevated for longer than when using whey alone. Since muscle protein synthesis leads to muscle growth, elevating muscle protein synthesis for longer can have a significant impact on your overall gains.

In fact, research suggests that people who add slow-digesting casein protein to a whey protein shake around their workouts enjoy greater muscle growth over time than people taking whey alone. This research is the very reason I recommend taking a blend of fast-digesting whey protein, medium-digesting egg protein, and slow-digesting micellar casein.

Say No to Protein Spiking!

Many supplement manufacturers cut corners on their protein powders because high-quality protein is very expensive to make. They often use a dirty trick called “nitrogen spiking.” Nitrogen spiking, also called “amino spiking” or “protein spiking,” is a way to manipulate the test used to measure the protein content of protein powders.

The current method used to assess the amount of protein in a protein powder involves measuring the nitrogen content, which is then converted into protein amount. Nitrogen is used because protein is made of amino acids strung together in a chain, much like a pearl necklace, and every amino acid contains nitrogen. If manufacturers add loose amino acids to a powder, they can fool the test and deliver less pure protein than their labels claim.

Many people think that extra amino acids in their protein powder are beneficial. The major problem, however, is that certain amino acids are not added to make the protein powder more effective. Instead, they're simply added for their nitrogen. Most single amino acids, such as taurine and glycine, are much cheaper than whey protein, casein protein, milk protein, or egg protein. Even highly beneficial amino acids like BCAAs and glutamine are cheaper than protein powder. So, by adding a bunch of cheaper amino acids to their protein powders, supplement companies can boost their nitrogen content, which technically means they boost the amount of protein per serving, at least according to the nitrogen test.

Because the added amino acids are not complete proteins, the protein content of a spiked protein powder is not truly what a nitrogen test claims it is. For example, a whey protein powder may claim to contain 20 grams of protein per scoop. However, if the manufacturer added 5 grams of glycine per serving, then you are only getting 15 grams of actual whey protein and 5 grams of glycine, which would read as 20 grams of protein per serving.

An even bigger problem arises when proteins are spiked with amino acids that aren't used as building blocks to form proteins in the body. Taurine is once such amino acid. Taurine helps with energy production, so you might first be excited to see a high quantity of it in your protein. However, if 5 grams of taurine has been added to your protein powder that claims to contain 20 grams of protein per serving, you are only getting 15 grams of real protein and 5 grams of taurine. So the extra taurine comes at the expense of total protein.

If your favorite protein powder lists BCAAs, glutamine, beta-alanine, betaine (trimethylglycine), or creatine, you might think it’s a great product because of the additional nutrients. Yes, your protein contains these performance nutrients, but you may be getting them at the expense of the protein, not in addition to the protein. All those ingredients are nitrogen-containing compounds that count towards the total protein amount listed on the label. You might be getting up to 10 grams less protein per serving than listed on the label.

The rampant use of nitrogen spiking is the main reason why I list the precise amount of each protein in every 24 gram serving of Pro JYM. Whey protein isolate makes up 7.5 grams, micellar casein makes up 7 grams, and milk protein isolate makes up 7 grams, and the remaining 2.5 grams comes from egg white protein (egg albumen). That totals 24 grams from complete proteins with no added amino acids or filler nutrients.

The Power of Pro

As with every other supplement in the JYM line, I want you to know the exact ingredients and doses in Pro JYM. I want you to see that it contains nothing but a pure blend of high-quality proteins in the exact amounts needed to maximize growth, recovery, and repair. In short, I want you to grow like a pro.

Prepare to experience the power of real science, real ingredients, and unreal results.

Hit the JYM!

Jim Stoppani, PhD
Owner, JYM Supplement Science

JYM Supplement Science

Ratings & Reviews

Overall Rating
2,411 Ratings
Verified Buyer Rating
2,196 Ratings
Average Flavor Rating
12 Flavors
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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.
  • 7 Banana Cream Pie
  • 7 Chocolate Cookie Crunch
  • 9 Cookies & Cream

Hey there i just bought this product for my self and i have a very quick question related to this product my question is what is the right time to drink this product before or after work out ? I'm totally confused plese help me to find out more about this product . Will appreciate guys

Verified Buyer
  • 9 Chocolate Cookie Crunch
  • 5 Root Beer Float
  • 10 S'mores

I tried the root beer first. Not the greatest root beer flavor. But then I ordered Chocalate Cookie crunch and s'mores. S'mores is maybe in top 3 best tasting proteins I have ever had. Chocalate Cookie crunch is very close. I can't wait now to try the other flavors. I like the blend of proteins and seeing exactly what is in them. Will be using them for sure and testing the other flavors. S'mores is an absolute win in my book though... Make sure you let it sit for a few minutes to mix better. No protein is instantly dissolved in 2 minutes...

Verified Buyer
  • 10 Caramel Macchiato

wow for something with no sugar in it this stuff tastes amazing. and I love that it is a blended protein. this is my pre-workout go to. I am in love with it!!!

Verified Buyer

I started using Pro Jym about a year and a half ago. I do a lot of research before I buy something and put it into my body. After researching Jim Stoppani and his Pro Jym, I was blown away. He taught me so much about protein and why he put what he did into this protein blend. I have seen nothing but results. The protein mixtures in Pro Jym is amazing and I would recommend this protein to anyone. All the flavors are good, you have to try them to find out which ones suit you the best. Everytime I stock up on Pro Jym, I ensure to get a different flavor everytime!

Verified Buyer
  • 9 Tahitian Vanilla Bean
Verified Buyer
  • 9 Red Velvet Cake
  • 10 Tahitian Vanilla Bean
  • 8 Caramel Macchiato
  • 10 S'mores

God I love this protein. Honestly, I used to get so sick from proteins, still do actually, but I realized after a time that it's some ingredient that certain proteins have that make me just absolutely nauseous. Over the years I've chased proteins trying to find one that didn't make me sick, found one for a while that worked Ok (Just a little bit of nausea) and then they changed their formula and I was right back at square one and I didn't actually use a protein consistently for years because of it. Then I found Jym, no nausea, nothing, not even a peep. Whatever those other proteins were using, Jym has none of it. And also, the flavor, my god it is so good. I feel like I should be heating up Smore's as a hot cocoa on a cold and blistery night. Tahitian vanilla bean is probably the best vanilla protein I've had. It is good on it's own and doesn't leave that protein aftertaste when you add it to recipes! I've put this protein into oatmeal, pancakes, cookies and it blends phenomenally! Red Velvet and Caramel Machiatto are not my favorite flavors when you compare to smores but they are still leagues above other proteins that you have to chug in order to get past the taste. I have noticed that both tend to do better with less water than you would expect. I'll usually only use about 4 oz of water with an entire scoop of either and it doesn't clump or get grainy and the taste actually improves, especially for the caramel machiatto. I didn't really get much of a coffee flavor until I used less water in it.

Verified Buyer
  • 9 S'mores

Formula protein combination 10/10 (scientifically based) Taste 9,2/10 (may be too sweet for some tastes but love the crunchy s'mores) Gains 9/10 ( basis on four good workouts per week.) I sometimes use it as a super shake with oats, banana, peanut butter or almonds and glutamine (portions vary on macros) Great product overall highly recommended.

Verified Buyer
  • 10 S'mores

I am absolutely blown away by whatever changes have been made to this formula and the S’mores flavor. Tried red velvet last year and hated it, way too chalky. This is the first time I’ve got any Jym protein since, and I’m glad I did. He really turned it around. Kudos. My next protein might just be a 4 pound jug of S’mores. Got the 2 lb this time just to try it. The days of knocking this protein are over I think. Jym at least has this flavor right. And it’s got little marshmallows in it! Super impressed and this supp is completely redeemed in my opinion.

Verified Buyer
  • 10 Chocolate Cookie Crunch
  • 10 S'mores

Idk why people are complaining about the “new taste”? This stuff is awesome! I look forward to pounding a shake after a workout. It’s like a reward.

Verified Buyer
  • 9 Caramel Macchiato
  • 10 S'mores

Smores Projym is probably the best tasting protein I've ever had. Jim turned the industry on it's head with transparent labels a few years back, so I trust this stuff. Carmel macchiato is my second favorite, then chocolate cookie crunch.

  • 8 S'mores

I like Jim and his stuff..BUT...if you look at this scoop size per gram(40) and yet there are only 24 grams of protein, that tells me there is a TON of other 'stuff' vs pure protein..that is enough to make me a bit weary of this product...good tasting

Verified Buyer
  • 10 Root Beer Float

I'm mixed on this product as the flavor is 10/10 for me (I drink it with milk and it makes it like a creamy root beer float flavor) and I like the macros, BUT it has ingredients known to California to cause cancer (Prop 65). This seems not to matter to most people but it matters to me so I will not be buying this product ever again.

Verified Buyer
  • 10 Chocolate Cookie Crunch

The absolute best tasting protein ive ever tasted. Id never drink anything else. Ive never been so anxious for anything. lol I love it so much and Ive seen such a vast improvement in my muscles recovery.

Verified Buyer
  • 10 S'mores

I struggle to find a protein shake with a consistency and taste I can tolerate and I’m highly impressed with Jym. It keeps me fuller longer and I love the taste. Disclaimer: I do mix with milk for a better taste. I do have to shake it up and let it sit for a couple minutes so the consistency to even out, but that may also be due to the milk. The little marshmallows in the s’mores are probably my favorite part. It makes me feel like I’m drinking something more indulgent than a protein shake.

  • 10 Tahitian Vanilla Bean
  • 10 Root Beer Float

With out a doubt the best protein I have tasted. Mix’s very easy no weird after taste. Recommend trying it with milk and and sparkling mineral water tastes great. Like root beer float and vanilla egg cream. Love both but root beer slightly edges out vanilla