A scientific analysis of the differences between vegan and non-vegan supplements 

The use of dietary supplements has experienced an unprecedented boom in recent years. According to current market analyses, a significant portion of the population in Europe and North America now regularly uses vitamins. or Minerals are used to promote health, boost performance, or compensate for nutritional deficiencies. At the same time, the number of people choosing a vegan or vegetarian diet is increasing. While the consumption of plant-based foods is becoming increasingly commonplace, the focus on supplement use often remains superficial. Many consumers assume that dietary supplements are neutral products free of animal-derived ingredients. However, reality paints a different picture: numerous preparations are still based on animal-derived raw materials, either in the main ingredient or in the excipients used.  

The discrepancy between expectation and reality is significant. People who consciously choose a plant-based lifestyle often unknowingly consume supplements whose ingredients are derived from animal production. This raises not only ethical conflicts but also questions about transparency, sustainability, and health quality. Against this backdrop wins The development and use of vegan food supplements is gaining in importance. They not only represent a consistent addition to a plant-based diet, but are also increasingly relevant in the mainstream, as they combine health, environmental, and ethical benefits.  

Historical development and traditional raw material sources  

For a long time, the production of dietary supplements was driven by the availability and cost of raw materials. Gelatin, for example, was used early on in the pharmaceutical industry because it was readily available and technologically well-suited for forming capsule shells. It is derived from the bones, cartilage, and hides of pigs and cattle and is still used in a large proportion of capsule preparations today. Animal-derived raw materials were also preferred for vitamins for a long time. Vitamin D3, for instance, is traditionally extracted from lanolin, the wool grease of sheep – a process that has been established in the industry for decades.  

Omega-3 fatty acids, in turn, traditionally come from fish oil obtained through large-scale industrial fishing. Collagen supplements, which have experienced a huge surge in popularity in recent years, are based almost exclusively on animal byproducts from the meat and leather industries. These examples illustrate that the supplement industry is historically closely linked to the use of animal-derived raw materials.  

Health dimension: Bioavailability, purity and tolerability  

A key argument for the development vegan supplements This concerns the health-related quality. While animal-based raw materials are often inexpensive, they carry certain risks. Residues of antibiotics, hormones, or heavy metals cannot be ruled out in animal-derived ingredients. Vegan alternatives, on the other hand, are generally based on fermentation, plant extracts, or microorganisms and are therefore often free of such contaminants.  

Furthermore, manufacturing technologies have advanced considerably over the last two decades. Vitamin B12, which is essential for a vegan diet, is obtained, for example, through bacterial fermentation. The resulting forms, such as methylcobalamin or cyanocobalamin, are characterized by high stability and bioavailability. Vitamin D3 from lichen is also chemically identical to... lanolin-based Vitamin D3 and exhibits the same physiological effectiveness. In the case of Omega-3 fatty acids  Algae oil preparations not only offer the advantage of being free from pollutants, but also a direct supply of the bioactive fatty acids EPA and DHA, without the body having to convert them.  

New approaches in the field are particularly exciting. Collagen boosters . While animal collagen is simply broken down into its amino acids and reused in the body, vegan products specifically rely on a combination of amino acids such as glycine, proline, and lysine in conjunction with vitamin C. These act directly on endogenous collagen synthesis and can thus physiologically support the formation of the body's own collagen. A targeted supply of these building blocks could have a measurable impact on skin elasticity and joint health , without the need for animal collagen.  

Sustainability and ecological implications  

The ecological impacts of animal supplement production are significant. Fish oil provides a striking example: Millions of tons of fish are harvested from the world's oceans every year, a large proportion of which is not for human consumption but for processing into fish oil or animal feed. This contributes significantly to overfishing and endangers marine ecosystems.  

Gelatin production is also closely linked to factory farming, whose ecological footprint in the form of methane emissions, water consumption and land requirements is known to be problematic.  

Vegan Supplements In contrast, they rely on raw materials that can be produced sustainably. Microalgae can be cultivated in closed systems, require little space and water, and are independent of marine ecosystems. Lichens, used for vitamin D3, are also a resource-efficient source. Fermentation processes used for the production of B vitamins enable continuous, controlled, and environmentally friendly production. These production methods stand in stark contrast to the resource-intensive processes of animal-based raw material extraction.  

Critical nutrients in a vegan diet  

A common argument against vegan diets is the risk of nutrient deficiencies. Indeed, there are certain micronutrients that occur in plant-based diets in small amounts or in a poorly bioavailable form. These include, in particular, vitamin B12 and vitamin D3. Omega-3 fatty acids  as well as minerals such as iron, zinc, iodine and selenium.  

Vegan Supplements They offer a targeted solution here. Vitamin B12 from bacterial fermentation ensures a reliable supply of this essential nutrient, vital for blood formation, nerve health, and DNA synthesis. Vitamin D3 from lichen is an equivalent alternative to... Lanolin preparations and is recommended year-round in northern latitudes. Omega-3 fatty acids  out of algae oil They cover the need for DHA and EPA and thus offer the same health benefits as fish oil – but without the disadvantages of marine overfishing. Iron, zinc, and selenium can also be found in chelated or supplement well with mineral forms of plant origin to ensure an adequate supply.  

Ethical aspects and consumer awareness  

Besides health and environmental considerations, ethical factors also play a major role. Many people consciously choose a vegan lifestyle to avoid animal suffering. However, non-vegan supplements often undermine this decision, as they are based on raw materials from slaughterhouse waste, fishing, or industrial animal farming. The lack of transparency is particularly problematic. Manufacturers often label ingredients using only technical chemical terms that are incomprehensible to laypeople. Terms like "cholecalciferol" for vitamin D3 or " hydrolyzed " are examples of this. Collagen masks the animal origin. Marketing terms like "pure" or "natural" can also be misleading, suggesting a plant-based origin even when animal-derived raw materials have actually been used.  

This lack of transparency leads to consumers unknowingly taking products that are incompatible with their values. Vegan food supplements offer a consistent alternative here, as they are generally clearly labeled and often certified by independent bodies.  

Future prospects : Paradigm shift in the supplement industry  

The development towards vegan supplements This is not just a niche trend, but a fundamental paradigm shift in the dietary supplement industry. More and more manufacturers are recognizing the growing demand for transparent, sustainable, and ethically sourced products. Innovations in raw material extraction—such as the large-scale fermentation of vitamins or the cultivation of microalgae—are opening up entirely new possibilities.  

Furthermore, consumer perceptions are also changing. Dietary supplements are increasingly being evaluated not only from a health perspective, but also from an ecological and ethical standpoint. This is reflected in market studies that show that younger target groups in particular have a clear preference for vegan and sustainable products. The future of the supplement industry will therefore be strongly influenced by these developments.  

Conclusion  

Vegan supplements are more than just an addition for people following a purely plant-based diet. They represent a comprehensive approach that combines health, sustainability, and ethics. While non-vegan products are based on decades-old, inexpensive, but problematic raw materials, vegan alternatives utilize innovative manufacturing processes that are not only convincing from a health perspective but also ecologically and ethically superior.  

The "sad truth" behind non-vegan supplements is that they are often consumed unknowingly, without consumers being informed about their origin. This creates a contradiction between individual health consciousness and global responsibility. Vegan Supplements They resolve this conflict: They are scientifically sound and effective, free of animal residues, produced in a resource-efficient manner, and ethically consistent.  

The supplement industry is at a turning point. In the future, successful products will not only ensure nutritional supply but also meet the demands of a more conscious and sustainable society. For consumers, this means that those who choose vegan supplements today are not only choosing their own health but also a better future.  

Sources:  

- Nieto, Á.VA, Diaz, AH & Hernández, M. Are there Effective Vegan-Friendly Supplements for Optimizing Health and Sports Performance? a narrative review. Curr Nutr Rep 14, 44 (2025). https://doi.org/10.1007/s13668-025-00633-4  

- Wang T, Masedunska A, Willett WC, Fontana L. Vegetarian and vegan diets: benefits and drawbacks. EUR Heart J. 2023 Sep 21;44(36):3423-3439. doi : 10.1093/ eurheartj /ehad436. PMID: 37450568; PMCID: PMC10516628.  

- Nieto, Álvaro Vergara A et al. "Are there Effective Vegan-Friendly Supplements for Optimizing Health and Sports Performance? a Narrative Review." Current nutrition reports vol. 14.1 44. 12 Mar 2025, doi:10.1007/s13668-025-00633-4