SPIRU-TEIN Review – A Look At This NaturesPlus Soy Protein Powder

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By Leslie Waterson

Reviewed by Juliana Tamayo, MS, RDN - Last Updated


Protein powders used to be popular just amongst athletes and bodybuilders, but now they are common supplements for many others as well. Protein is what builds and keeps muscle intact, which is why protein powders sell well to active people, as well as people who just want to increase their protein count.

Not only do athletes and bodybuilders use protein powders to up their muscle mass, but it can also be used as a meal replacement in hopes of losing weight. This is achieved by trying to replace meals while simultaneously getting only low calories. Eventually, low caloric intake will lead to a calorie deficit, which will lead to weight loss.

So, regardless if you are an athlete or just someone who wants to replace his or her meal for weight loss purposes, protein powders can help you in this regard!

But not all protein powder is equal. In fact, there are different types of protein powders. There’s whey protein, such as Body Fortress Super Advanced Whey Protein. There’s collagen protein, like BUBS Naturals Collagen Protein. Then there’s also casein protein and soy protein as well. Each has their own different purposes.

But if you are looking for a protein powder that is free from dairy and, preferably, vegetarian, soy protein would best work for you – and speaking of soy protein, you may want to check out SPIRU-TEIN from NaturesPlus! Let’s take a deeper dive into this soy protein powder with this review of SPIRU-TEIN.

NaturesPlus SPIRU-TEIN cranberry

What Is NaturesPlus SPIRU-TEIN?

SPIRU-TEIN is a soy protein powder made by NaturesPlus. This is NaturesPlus’ philosophy regarding SPIRU-TEIN: soy protein (25g per day), a good cardiovascular fitness along with a diet that has low cholesterol, and saturated fat are key in keeping your heart healthy and reducing your potential risk of heart disease.

Also, SPIRU-TEIN is vegetarian-friendly and is a non-GMO product!

NaturesPlus SPIRU-TEIN

Here are some of the things you can enjoy if you use SPIRU-TEIN as your protein powder:

1) Prepare Fast Meals

We live in a very fast-paced world. Our world is so fast today compared to before that sometimes, even making breakfast seems to take time! For this reason, SPIRU-TEIN is made to be prepared in an incredibly fast way. In just a few minutes, you can have your meal on the go!

2) Improved Energy Levels

Many protein powders try to help people in muscle growth and recovery, but aside from the two, it is very important that you keep your energy levels intact. For this very reason, SPIRU-TEIN is specifically made to help us attain high levels of energy throughout the day. This can be done through the blended vitamins, minerals, and amino acids in it. These nutrients all support your body’s performance by helping it perform at its best!

Besides, not all people use protein powder for muscle purposes. It will be very beneficial for them if their meal will give them energy boosts throughout the day.

3) It’s Simply Delicious!

Some protein powders have a reputation for having a dull or chalky flavor, usually because of their nutrient content. However, this will not be the case for SPIRU-TEIN.

SPIRU-TEIN protein powders come in a variety of flavors, such as chocolate, cookies and cream, chocolate-peanut butter, blueberries and cream, cappuccino, banana, chai latte, strawberry, vanilla, and some more!

What Can You Expect From SPIRU-TEIN?

Aside from the ones listed above, there are some other benefits that you can get from NaturesPlus SPIRU-TEIN. Below are some of the benefits that NaturesPlus SPIRU-TEIN can provide.

SPIRU-TEIN strawberry

1) NaturesPlus SPIRU-TEIN Will Help You In Building Muscles

After all, SPIRU-TEIN is a protein powder, so this is basically one of its functions!

You can use SPIRU-TEIN in-between your rigorous sets to help your muscles bulk up. This is achieved by adding more protein content in your muscles, hence helping it add more size and strength.

2) SPIRU-TEIN Is Good For Recovery After Workouts

Another main purpose of protein powders is to help athletes and bodybuilders recover their muscles after their workout sets. This is very important for them because they need to recover faster if they want to endure more in the workout and, hence, get more from their workout session.

SPIRU-TEIN aims to help athletes, bodybuilders, and just anyone concerned with muscle recovery to recover faster during their workout sessions so that they can get more out of it!

3) SPIRU-TEIN Is Good For Weight Loss And Management

SPIRU-TEIN helps you achieve weight loss through its protein content. With more protein, you can actually feel full despite eating (or drinking) relatively less compared to an average full-size meal. This explains why protein powders can replace one meal or even two, even though it’s just one tumbler of a drink!

4) SPIRU-TEIN Is Rich In Vitamins And Minerals

Unlike other protein powder, as already mentioned above, SPIRU-TEIN is rich in vitamins and minerals. This is to help you boost your energy throughout the day.

But because SPIRU-TEIN is this rich in vitamins and minerals, you can also get other benefits those vitamins have to offer to you!

5) SPIRU-TEIN Is Vegetarian-Friendly

If you are a vegetarian, SPIRU-TEIN will be very enjoyable for you. Aside from the benefits above, you can take SPIRU-TEIN without breaking your diet philosophy!

NaturesPlus SPIRU-TEIN banana

SPIRU-TEIN Ingredients

These are the typical ingredients and nutrient content that makeup NaturesPlus SPIRU-TEIN.


  • Total Fat (Saturated and Trans Fat): 0g
  • Cholesterol: 0mg
  • Sodium: 110mg
  • Potassium: 90mg
  • Total Carbohydrates: 15g (Dietary Fiber – 5g, Sugar – 9g, Other carbohydrates – 1g)
  • Protein: 14g

Nutrient Content

  • Vitamin A: 5000 IU
  • Vitamin C: 60mg
  • Calcium: 300mg
  • Iron: 4.5mg
  • Vitamin D: 400 IU
  • Vitamin E: 30 IU
  • Thiamin: 1.5mg
  • Riboflavin: 1.7mg
  • Niacin: 20mg
  • Vitamin B6: 2mg
  • Folic Acid: 400mcg
  • Vitamin B12: 6mcg
  • Biotin: 300mcg
  • Pantothenic Acid: 10mg
  • Phosphorus: 200mg
  • Iodine: 150mcg
  • Magnesium: 80mg
  • Zinc: 15mg
  • Selenium: 12mcg
  • Manganese: 5mg
  • Chromium: 18mcg
  • Molybdenum: 20mcg

As you can tell, SPIRU-TEIN is full of vitamins, minerals, amino acids, and other key nutrients to support your muscles, energy levels, and overall health!

NaturesPlus SPIRU-TEIN supplement facts

Should You Buy SPIRU-TEIN?

NaturesPlus SPIRU-TEIN is certainly worth trying and buying. However, keep in mind that SPIRU-TEIN is made of soy, and not all people like to consume soy. However, if you have no problem with soy, then we suggest you try out SPIRU-TEIN!

NaturesPlus SPIRU-TEIN cappuccino


If you want to buy SPIRU-TEIN, you can check out NaturesPlus’ official store here! You can also order it off of Amazon here.

Overall Rating:
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Leslie Waterson

Leslie has been passionately involved in the health and fitness industries for over a decade. She is constantly reviewing the latest scientific research and studies in order to take a research-backed approach to lifestyle optimization. Her main areas of interest include nutrition and supplementation. Leslie shares her findings on Fitness Clone to help other health enthusiasts choose the products and routines that will help them achieve their goals.

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