Why True Protein Uses Only Natural Sweeteners

True Protein Blog Avatar Fallback reviewed by our Nutrition Team Published: 08 August 2025 Updated: 28 April 2026

Natural sweeteners offer a cleaner alternative to artificial additives, supporting better taste without unnecessary chemicals. This guide explains why True Protein uses natural options and what to look for when choosing a quality supplement.

Why True Protein Uses Only Natural Sweeteners

Summary

True Protein uses only plant-derived sweeteners, stevia and thaumatin, to deliver a clean, delicious taste without the health compromises associated with synthetic additives. By strictly avoiding artificial sweeteners like sucralose and aspartame, we ensure our supplements align with your body's natural biology and long-term wellness goals. This commitment to "clean" nutrition means you can fuel your recovery with confidence, knowing every ingredient serves a functional purpose for your health.

 

Why Are Artificial Sweeteners a Concern for Your Health?

Most mainstream protein powders rely on synthetic compounds like sucralose (955), aspartame (951), or acesulfame potassium (950) because they are incredibly cheap and shelf-stable. However, research has begun to suggest that these "shortcuts" may come with a metabolic cost.

A comprehensive review of 37 systematic studies found significant associations between the regular consumption of artificial sweeteners and weight gain, elevated blood pressure, and an increased risk of metabolic syndrome, the very issues many people use protein powder to avoid. Furthermore, emerging evidence suggests that these synthetic additives can disrupt the delicate balance of your gut microbiota, which is the foundation of your immune system and overall wellbeing. At True Protein, we believe your supplements should work with your body, not against it.

 

What Is Stevia and Why Is It Used in Natural Protein Powder?

Stevia is a zero-calorie, plant-based sweetener derived from the leaves of the Stevia rebaudiana plant, which is native to South America. The sweetness comes from purified natural compounds known as steviol glycosides.

  • Metabolic Support: Stevia delivers intense sweetness — hundreds of times sweeter than sugar — without impacting your blood glucose or insulin levels.
  • Safety Profile: It is one of the most researched natural sweeteners globally and is fully approved by Food Standards Australia New Zealand (FSANZ).
  • Fitness Compatibility: Because it provides zero calories, it is the ideal choice for athletes managing precise macronutrient targets or those following ketogenic and low-carb lifestyles.

 

What Is Thaumatin and How Does It Enhance Flavour?

While many are familiar with stevia, thaumatin is a premium "secret weapon" in natural formulation. Extracted from the Katemfe fruit found in West African rainforests, thaumatin is unique because it is technically a protein.

The primary role of thaumatin in our products is flavour modification. When stevia is used on its own, it can sometimes leave a lingering bitter note on the palate. Thaumatin has the remarkable ability to neutralise this bitterness, rounding out the flavour profile to create a smooth, balanced finish. It is a rare, high-cost ingredient that requires significant expertise to use correctly, which is why you won't find it in most budget-brand protein powders.

 

Why Does True Protein Combine Stevia and Thaumatin?

We found that the combination of these two plant-based powerhouses is far superior to using either in isolation. Stevia provides the clean, upfront sweetness, while thaumatin acts as the "polishing" agent to ensure the aftertaste is naturally delicious. This synergistic approach allows us to create award-winning flavours like Rich Chocolate and French Vanilla without ever resorting to artificial enhancers or high-calorie sugars.

 

Is True Protein Truly Natural?

Our commitment to clean ingredients isn't limited to how we sweeten our powders; it is the foundational philosophy across our entire range.

  • No Artificial Colours or Flavours: We avoid petroleum-derived dyes, which have been linked to hyperactivity, using only natural alternatives.
  • NZ Grass-Fed Sourcing: Our whey is sourced exclusively from New Zealand cows, ensuring no synthetic growth hormones or unnecessary antibiotics are used in the process.
  • Pasture-Raised Collagen: Our True Collagen is derived from world-class Australian farming practices to support joint and skin health.
  • Clean Formulation: Every product is GMO-free and free from unnecessary preservatives or anti-caking agents like silicon dioxide.
  • HASTA Certified: For your peace of mind, our HASTA products are independently tested for banned substances and contaminants.

 

What Does This Mean for Your Results?

Choosing a natural protein powder means you are fuelling your body with traceable, high-quality ingredients that support a healthy gut microbiome and stable energy levels. When you use True Plant Protein, you aren't just getting a faba bean, pumpkin seed and pea blend; you're getting a formula that is easy on the stomach and free from hidden chemicals.

Key Takeaways

  • Plant-Derived Power: True Protein uses only stevia and thaumatin for a natural, clean sweetness.
  • Gut Health First: By avoiding synthetic sweeteners like sucralose, we protect your microbiome and metabolic health.
  • The Thaumatin Difference: This rare fruit protein ensures our flavours are balanced and free from bitter aftertastes.
  • Transparency is Non-Negotiable: Every ingredient is clearly listed and sourced from premium origins like NZ grass-fed dairy.
  • Performance without Compromise: Natural sweeteners mean zero impact on blood sugar, making them perfect for any body composition goal.

Frequently Asked Questions

Does True Protein use artificial sweeteners?

No. We use only stevia and thaumatin, both of which are plant-derived. We deliberately avoid sucralose, aspartame, and acesulfame potassium due to their potential negative effects on gut health and metabolism.

What is the benefit of thaumatin over regular sweeteners?

Thaumatin is a natural protein from the Katemfe fruit. Its main benefit is its ability to mask the bitter aftertaste often associated with stevia, creating a much smoother and more natural flavour profile.

Is stevia safe for everyone to use?

Yes. Stevia is approved by major international health authorities, including FSANZ. Because it is a zero-calorie sweetener with no impact on insulin, it is safe for athletes, people managing weight, and those on low-carb diets.

Why do other brands still use artificial sweeteners?

Artificial sweeteners are significantly cheaper and easier to manufacture at scale. Many brands prioritise profit margins over the quality of the ingredients you are putting into your body.

Further Reading

IMPORTANT INFORMATION: all content provided here is of a general nature only and is not a substitute for individualised professional medical advice, diagnosis or treatment and reliance should not be placed on it. For personalised medical or nutrition advice, please make an appointment with your doctor, dietitian or qualified healthcare professional.