A Sweeter Upgrade: Why We’re Changing the Way We Sweeten

A Brief History of Sweeteners: From Nature to Innovation

Humans have always had a sweet tooth. Long before refined sugar dominated supermarket shelves, our ancestors relied on natural sources of sweetness:

Today, we’re in the midst of a natural sweetener renaissance. With more consumers avoiding refined sugar and artificial sweeteners, interest in plant-based sugar substitutes like stevia, monk fruit, thaumatin, and erythritol has surged. 

But not all sweeteners are created equal. Some bring bitterness, others are costly, and some require clever formulation to shine. 

Let’s break down the most popular natural sweeteners in supplements today.

Stevia: The Zero-Calorie Leaf That Started It All

Stevia is extracted from the Stevia rebaudiana plant, native to South America. It’s up to 300 times sweeter than sugar and completely calorie-free.

It’s a popular choice in sports supplements because it:

But stevia isn’t just about sweetness - research suggests it may also support blood sugar control, appetite regulation, and heart health:

Older versions of stevia were known for their bitter, licorice-like aftertaste. But modern extraction techniques now isolate the best-tasting glycosides, resulting in a much smoother, more pleasant flavour.

Stevia has been thoroughly researched, with over 200 studies confirming its safety. Food Standards Australia New Zealand (FSANZ) has established an acceptable daily intake (ADI) of 0–4mg per kg of body weight.

Monk Fruit: Ancient Sweetness Meets Modern Performance

Monk fruit (Luo Han Guo) is another big player in natural sports supplements. It’s 150–200 times sweeter than sugar but has zero impact on blood sugar levels. 

Traditionally, dried monk fruit was boiled into a sweet tea. Today, the sweet compounds - mogrosides - are extracted using water or enzymes, resulting in a purified, more concentrated sweetener.

Unlike stevia, monk fruit has no bitter aftertaste and blends well into a variety of sports supplements, including protein powders and hydration drinks.

The catch? Monk fruit extract is expensive and less readily available than stevia. Some formulations may also carry a subtle fruity note, which doesn’t suit every flavour profile.

FSANZ has approved monk fruit as safe for consumption. A 2019 EFSA study recommended more long-term research, but current evidence supports its use in natural sports supplements.

Thaumatin: The Secret to Smoother, Better Flavour

This one is a game-changer for sports supplements—not only as a primary sweetener but also as a natural flavour enhancer that smooths out bitterness, balances sweetness, and improves mouthfeel.

Derived from the katemfe fruit, native to West Africa, thaumatin is a natural sweet protein that’s 1,500–2,000 times sweeter than sugar - yes, you read that right!

Thaumatin is extracted from the fruit using a natural water-based process and then carefully purified to ensure maximum sweetness and quality.

Here’s why it works so well in sports nutrition:

FSANZ has approved thaumatin as safe, with no ADI restrictions. Beyond its sweetness, research suggests it may have anti-inflammatory properties.

Erythritol: Sugar Texture Without the Sugar Crash

A naturally occurring sugar alcohol found in fruits like grapes and melons, erythritol mimics the bulk and feel of sugar – making it a useful ingredient in ready-to-drink shakes and protein bars.

Commercially, it’s produced through the fermentation of corn or sugar beets, with modern refining methods removing any residual bitterness.

At about 70% of the sweetness of sugar, erythritol has zero calories and a glycemic index (GI) of zero. That means:

Erythritol is generally well tolerated, but consuming large amounts can cause mild digestive discomfort. But it’s far less likely to cause digestive issues than other sugar alcohols such as xylitol or sorbitol.

A 2023 study in Nature Medicine raised concerns about a potential link between erythritol and cardiovascular risks. However, this study was correlational, not causal, meaning more research is needed to determine if erythritol itself is responsible for these effects.

FSANZ has not issued any warnings on erythritol, and it remains widely used in low-calorie sports supplements. 

The Modern Solution: Blending Sweeteners for the Best Taste

While each natural sweetener has its strengths, no single one perfectly replaces sugar on its own. 

That’s why modern formulations focus on balanced blends – combining sweeteners to deliver the best possible taste, texture, and performance. 

Take stevia, for example. It brings the sweetness but can sometimes leave a bitter edge. That’s where thaumatin steps in – a natural flavour enhancer that smooths out any harsh notes and rounds out the sweetness beautifully. 

This carefully crafted combo is already used in several of our products, and we're gradually rolling it out across our entire naturally sweetened range to ensure a consistently clean, satisfying flavour.

The Future of Natural Sweeteners in Sports Nutrition

The shift away from sugar and artificial sweeteners is no longer a trend – it’s a movement. As consumer demand grows for natural, low-calorie alternatives, we’re proud to lead the way with innovative sweetener systems that deliver taste without compromise. 

From better glycaemic control to a cleaner ingredient list, natural sweeteners offer huge potential for performance, wellness, and everyday enjoyment. 

At Bulk Nutrients, we’re committed to ensuring every naturally sweetened product tastes just as good as it performs – and with our new blend, we think you’ll taste the difference.