High-quality, pure whey protein. Low carbs, no fat, no added sugar. The lean muscle gains you’ve been looking for!


Iso JYM Clear Whey Protein Isolate

Product Highlights:

  • Iso JYM contains 20 grams of pure whey protein Isolate (WPI), with zero fat, no added sugar, only 1-2 grams of carbohydrates, and only 90 calories per serving.
  • Iso JYM is a convenient, delicious, light, refreshing drink that provides a quick hit of easy-to-drink protein whenever you want it – first thing in the morning, with lower-protein meals to bump up the protein content, as a between-meal snack, or even before and after workouts.
  • Iso JYM tastes more like your favorite thirst-quenching drink, with no milky taste or texture.
  • Iso JYM comes in two tempting flavors: Grape and Mango Lime. (More will be added in the future.)
  • Iso JYM promotes lean muscle gains, exercise recovery, and numerous health benefits in the body. It’s also the perfect protein powder for those following low-carb diets to maximize fat loss.
  • Iso JYM provides an easy-to-digest protein source for individuals who are lactose intolerant.

It’s light, it’s refreshing, it quenches your thirst with delicious fruit flavors. Yet it has 20 grams of protein and ZERO sugar. It’s my brand-new Iso JYM Clear Whey Protein Isolate.

Since starting JYM Supplement Science in 2013, my mission has always been to innovate. And I have done just that once again with Iso JYM. This is truly a one-of-a-kind protein drink, with such light and refreshing flavors (Grape and Mango Lime) that I made it clear!

Who is Iso JYM for?

Iso JYM is an ideal protein for individuals looking for a high-quality, whey-only product. It’s also great for anyone wanting thirst-quenching flavors, yet with none of the sugar you get from most beverages. This is pure protein for lean muscle gains!

As you’ve heard me say time and again, sufficient protein intake is critical for improving your physique, performance, and overall health. In fact, I recommend getting in a solid 1 - 1.5 grams of protein per pound of body weight per day, and at least 40 grams of protein at meals.

For this reason, Iso JYM is a go-to supplement for everyday use. It delivers the most protein per calorie when compared to protein powders that use protein concentrates or milk protein isolates, and it’s perfect to help meet your macros on protein without going over on carbs and fats.

What’s in Iso JYM?

Iso JYM contains 20 grams of pure Whey Protein Isolate (WPI) per scoop. WPI is a purer form of whey protein than the cheaper whey protein concentrate you see in most protein powders. The WPI in Iso JYM goes through a specific microfiltration process that removes lactose and doesn’t harm the small protein molecules from the whey. The result is a whey product with a protein concentration of 90% or more for maximum uptake and digestibility.

Just as important as what’s in Iso JYM is what’s not in it. Iso JYM contains no fat, no added sugar, only 1-2 grams of total carbs, NO LACTOSE. You’re getting 20 grams of the highest-quality whey protein with only 90 total calories. It’s the ultimate clean protein!

Why I created Iso JYM

You’ve heard me say time again that whey protein on its own absorbs too rapidly to maximize muscle protein synthesis (and muscle growth) around workouts, and instead you need a blend of fast- and slow-digesting proteins like whey and casein (respectively). This is the reason I created my Pro JYM protein blend – to maximize performance and recovery around workouts for better results. But that’s not to say that you can’t use pure whey around workouts, as well as other times of day, to maximize your protein intake at meals and throughout the course of the day.

Both the benefit and the problem with whey is that it's digested, absorbed and used by the muscles very quickly. This is good around workouts, because we want those amino acids to get to the muscles as soon was possible for energy during the workout and recovery afterward. This creates a big increase in muscle protein synthesis (MPS), which is how muscle grows. Plus, whey is rich in BCAAs, which are the most critical for turning on MPS.

The downfall of this speed is that the spike in MPS caused by whey is very short-lived. Almost as quickly as MPS is increased, it starts to drop. By two hours or so later, the spike in MPS is gone, and the processes of muscle building stops.

There are two remedies for this dramatic but short-lived spike in MPS. The first is to eat more frequently. If using a whey-only product like Iso JYM to get your protein, make sure that your next meal does not come much later than 2 hours after the whey protein. This will allow you to create more spikes in MPS through the day, which will help you pack on extra muscle mass.

For example, if you had Iso JYM as your pre-workout protein source, make sure your post-workout shake (whether Iso JYM or Pro JYM) comes no more than 2 hours later. This is typically not a problem, since few workouts run 2 hours long. If you followed your workout with Iso JYM as your post-workout protein, again, simply make sure that your next meal (shake or whole food) comes no more than 2 hours later.

The other option is to have Iso JYM with a whole-food, slow-digesting protein source, like dairy (cheese, cottage cheese, Greek yogurt or Skir, milk, etc), beef, poultry, fish, or pork.

Iso JYM for those with food alergies

Many people have special dietary needs that don’t allow for a protein blend. Some are ovo-vegetarian (meaning they eat eggs but not dairy products), and some don’t want casein because it sits longer in the digestive tract, and makes them feel fuller and bloated. This can make it difficult to eat enough to gain appreciable muscle. Here a whey protein, like Iso JYM is a better option.

I also wanted to offer protein flavor options that were different than the standard chocolate and vanilla (which I love, by the way). I’ve always liked the thought of a protein shake that’s light and refreshing like a sports drink, but without the sugar. ISO JYM fills that gap in the market – as I said above, it’s a refreshing drink for building a lean, muscular physique!  

Whatever your situation, dietary restrictions, or preferences, you now have more protein options, thanks to Iso JYM.

How to use Iso JYM

Use Iso JYM the same way you would any other protein powder. It’s a great protein source first thing in the morning, with meals, between meals, or around workouts.

Take 1-2 scoops of Iso JYM, mixed in water, at any of these times.

Iso JYM can also be mixed with Pre JYM or Post JYM for delicious, complementary flavor combos that will provide fuel for workouts and ignite recovery after training. Mix Grape Iso JYM with Grape Candy Pre JYM, or Mango Lime Iso JYM with Mandarin Orange Post JYM Recovery Matrix. Or, come up with your own concoction!

Can I take both Iso JYM and Pro JYM?

I didn’t create Iso JYM to replace Pro JYM. I created it to give fit-minded people as many clean protein options as possible. By all means, use both Iso JYM and Pro JYM if you want. For example, have Iso JYM pre-workout and at other meals to conveniently bump up protein intake. Then, use Pro JYM post-workout and before bedtime for a longer-lasting bump in MPS.

And feel free to alternate between Iso JYM and Pro JYM however you want. If you’re in the mood for a light, fruit-flavored protein drink, choose Iso JYM. When you want something creamier that tastes more like a milkshake, go with Pro JYM.

Where to get Iso JYM

Iso JYM is now available here on JYMSupplementScience.com as well as Bodybuilding.com, Amazon, and Vitamin Shoppe. It’s available in a 1-pound (20 servings) container.  

When you buy directly from the JYM Store, you’ll be able to take advantage of our great JYM Rewards program. Racking up JYM Rewards points will get you tons of great deals: free shipping, free swag, great discounts on products, and more.

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