GNC - Live Well.

Is Your Protein Scamming You?

You get exactly what you pay for with GNC Brand proteins, but that's not necessarily the case with other brands.

A recent class-action lawsuit is exposing what GNC has been saying for some time—many protein products on the market are taking part in a practice called “protein spiking” or “amino spiking” that is cheating their customers. Independent testing confirms that these protein supplements use added ingredients to spike their protein test results, making it appear that the products contain more protein than they actually do.

You can feel confident when you take home a GNC brand product because we guarantee that each and every one of our more than 300 GNC brand protein supplements contains the full amount of protein stated on the label and is 100% Real Protein with NO protein spiking. In fact, we GUARANTEE it!

GNC Guarantee

  • Every GNC brand protein product contains 100% Real Protein with no overstated protein values.
  • GNC never spikes protein amounts, ever!
  • GNC proudly stands behind the quality, potency and taste of GNC brand protein supplements – Guaranteed!


Well-known national brands have made millions of dollars in profits from their uninformed protein customers by cheating on their labels’ protein claims!

How Is the Real Protein Amount Determined?

Determining the amount of real protein in a protein supplement comes down to accurate testing and measurement. In order to accurately calculate the amount of real protein in a protein supplement, the nitrogen from other ingredients such as amino acids betaine and creatine must be subtracted from the total to determine the real protein amount. Some protein supplement companies use these ingredients to spike their protein test results because they do not subtract the nitrogen from these other sources.

This practice is referred to as “protein spiking” or “amino spiking.” It is when ingredients that are not whole proteins are being used to spike protein test results. Many of these ingredients have a specific purpose and benefit, but they should not be counted as protein grams.

Does My Protein Supplement Contain 100% Real Protein?

Unfortunately, you cannot confirm if a protein supplement contains 100% Real Protein by reading the product label. The reason is that protein supplement product labels don’t always indicate how they calculate total grams of protein per serving.

The only way to be certain your protein supplement contains 100% Real Protein is to look for GNC brand proteins. We guarantee that you are getting the exact amount of real protein that is displayed on GNC brand product labels.



GNC Protein Brands Contain 100% Real Protein



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These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.