Isagenix offers three distinct meal replacement shakes — IsaLean Shakes, IsaLean Pro Shakes, and IsaPro. And while it’s nice to have a variety of choices, making the right shake selection based upon your needs can be confusing. There are differences between each of the available options, and to help clarify the differences, it’s helpful to know how each of these nutritious shakes came to be. So, let’s walk through when to use IsaLean, IsaLean Pro and IsaPro Shakes…

A Little History…

Although it has been re-formulated over the years, the IsaLean Shake is the original Isagenix meal replacement shake. The IsaLean Shake is 240 calories and formulated with a healthy balance of 24 grams of high-quality protein, 24 grams of low-glycemic carbohydrates, 8 grams of fiber, and 6 grams of healthy fat. Nearly all of the protein in the IsaLean Shake is undenatured whey protein sourced from New Zealand cows that are grass-fed, milked according to season, and not given hormones, steroids, or antibiotics. Studies show that the Isagenix undenatured whey protein is high in branched-chain amino acids and the optimal form of protein for torching fat and building lean muscle. The IsaLean Shakes are available in the following distinct flavors — Creamy Dutch Chocolate, Creamy French Vanilla, Strawberry Cream, and Black Sesame as well as three dairy-free flavors, which is their dairy-free, vegan-friendly version.

In response to growing evidence that whey protein can increase fat loss and help to prevent age-related muscle degeneration, Isagenix launched IsaPro. IsaPro is a protein supplement with 18 grams of pure undenatured whey protein concentrate virtually free of carbohydrates and fat. Unlike the IsaLean Shake, IsaPro is not a complete meal replacement shake. However, some Isagenix product users were looking for a meal replacement shake even higher in whey protein than our standard IsaLean Shakes and began combining one scoop of IsaPro with one and a half scoops of IsaLean Shake. And that’s how the IsaLean Pro Shake came to be. IsaPro is available in Vanilla or Chocolate.

Continue Reading Below

IsaLean Pro Shake is a complete, balanced meal replacement shake packed with 36 grams of protein (primarily undenatured whey). The additional protein permits even greater fat burning and muscle retention, helping break through weight loss plateaus and maximizing gains in hard earned muscle building. IsaLean Pro Shake is available in Natural Chocolate, Natural Vanilla and French Vanilla.

How and When to Use IsaLean and IsaLean Pro Shakes

IsaLean Shakes and IsaLean Pro Shakes are ideal full meal replacements because they contain the right balance of protein, carbohydrates, healthy fats, vitamins, and minerals, all of which promote healthy weight management, muscle maintenance, enduring energy, and curb hunger. A meal replacement must maximize satiety and prevent muscle break down over an extended period, as the time between meals for many people can often exceed four hours. The IsaLean and IsaLean Pro Shakes achieve this by using a combination of whey protein and milk protein concentrate. Whey protein is the primary form of protein in the Isagenix Shakes as it is the superior form of protein for burning fat and triggering muscle growth. But, the milk protein concentrate (mainly from casein) is more slowly absorbed by the stomach, providing a sustained release of protein to inhibit muscle breakdown and help a person stay full over a longer period of time. Satiety and sustained energy are further promoted by low-glycemic carbohydrates, 8 grams of fiber, and healthy fats sourced from flaxseed and olive oil.

So, should you use IsaLean Shake or IsaLean Pro Shake as your primary meal replacement shake? The answer to this question depends on the individual and their personal health goals. Both shakes will provide high-quality protein and a balance of carbohydrates, fats, vitamins, and minerals. But, IsaLean Pro is more specialized for those individuals looking to reap the benefits of consuming additional dietary protein from dairy. Diets higher in protein are well-suited for athletes looking to maximize lean muscle building, older individuals wanting to preserve or build lean muscle, and those individuals looking for extra assistance in curbing hunger and breaking thru weight loss plateaus.

How and When to Use IsaPro

IsaPro, on the other hand, is a high-quality undenatured whey protein supplement that can be added to anything for those looking to strictly boost their protein in-take. IsaPro was designed to supplement the IsaLean Shake and was never meant to be a standalone product. But, since the inception of IsaPro, the science of sports nutrition has evolved and the benefits of consuming whey protein directly after exercise has become obvious, which has made IsaPro as a standalone product very appealing to athletes. After a workout, you want to consume the right kind of protein, in the right amount, as soon as possible. Post-workout your muscles are hungry for protein to stimulate growth and repair. The whey protein in IsaPro is the best form for triggering muscle growth because it’s high in branched-chain amino acids (such as leucine) and is quickly absorbed into the bloodstream. IsaPro also does not have any fat or fiber to compete with and slow-down protein absorption. Add a source of carbohydrates — banana, strawberries, orange juice, or other — and the whey protein will help stimulate rapid and efficient replacement of the stored carbohydrates (glycogen) depleted during exercise. Plus, for those looking to burn fat around the mid-section, IsaPro has recently found a unique place as part of the “Bedtime Belly Buster” method and “Whey Days”.

This post contains advertisements and/or affiliate links. For more information, see our disclosure here.