Fermented Whey Protein | Mellow Yellow
Innovative concept for your brand
Fermented protein powder with GOS is a modern advancement on traditional protein powders. Fermentation can improve the digestibility of whey protein, whilst galacto-oligosaccharides (GOS), as prebiotic fibre, can support gut flora.
Our fermented whey protein, available in exotic fruit and vanilla flavours, also combines high-quality whey proteins with GOS for optimal digestion and maximum nutrient absorption. Thanks to the fermentation process, the protein is particularly easy to digest, promotes the growth of bifidobacteria in the gut and can reduce that unpleasant feeling of bloating and flatulence during and after exercise.
If you’re looking for a protein powder that not only aids muscle recovery and growth but also benefits your gut flora, then Mellow Yellow is the perfect choice for you.

Product benefits at a glance
- Fermented protein: better tolerated, better utilized
Fermentation makes whey protein particularly easy to digest and increases its bioavailability. This can accelerate the absorption of important amino acids and thus specifically support regeneration and muscle building after training. - Galacto-oligosaccharides (GOS) for intestinal health
The GOS it contains promote the growth of beneficial bifidobacteria in the intestine. As prebiotic dietary fibres, they can have a positive influence on the intestinal flora and thus on general well-being. A plus point that is increasingly in demand among health-conscious target groups. - Pleasant digestibility with full protein content
Many consumers react sensitively to conventional whey protein. Our fermented protein concept is designed to reduce digestive complaints such as bloating or flatulence after consumption, without compromising on taste or nutritional profile. - Without sugar, gluten and artificial flavors

Your benefits as a Biohealth customer
- Differentiation through additional functional benefits: fermentation and GOS
- Taps into current health trends such as gut health, fermented protein and sports nutrition
- Widerange of individual designoptions in terms of taste, formulation and packaging
- Developed and produced by an experienced contract manufacturerforfoodsupplements in Germany
Ready for your next
product highlight?
As an experienced contract manufacturer, we support you from the product idea to the market-ready implementation of your individual dietary supplement or health food. Our focus is on your full service experience so that you feel optimally supported at all times.
With our fermented whey protein concept as a basis, you can offer your customers real added value. Request a concept now and develop your range in a targeted manner. Or discover more inspiration from the world of biohealth.
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Frequently asked questions about fermented protein powder
Fermented protein powder is a protein that undergoes a fermentation process during production. This involves the use of microorganisms or enzymes to specifically alter certain properties of the protein. With fermented whey protein, the main focus is on improved digestibility, whilst the high-quality amino acid profile is retained.
For brands in the sports nutrition and functional nutrition sectors, fermented protein offers an additional differentiating factor: it combines a high-quality protein supply with the trend towards fermented foods and easily digestible formulations.
Galacto-oligosaccharides (GOS) are prebiotic fibres that are often produced from lactose via an enzymatic process. They are not digested in the small intestine but pass into the large intestine, where they can serve as a food source for certain beneficial gut bacteria, particularly bifidobacteria.
As part of a balanced diet, fermented protein powder can help to maintain muscle mass whilst losing weight and keep you feeling full for longer. However, the particular added value of fermented formulations lies above all in their good tolerability and – when combined with prebiotic ingredients such as GOS – in their positioning as a modern functional nutrition concept.
No. Mellow Yellow is not a consumer product available directly from retailers. It is a product concept developed by Biohealth for companies wishing to develop a fermented protein powder as a private-label or white-label product.
The concept serves as inspiration and a basis for bespoke branded products in the sports nutrition and functional nutrition sectors. More product inspiration:



