Types of Nutraceuticals: Categories, Examples & Dosage Forms

Nutraceuticals have become a familiar term for one of the fastest growing global market segments in oral dosage consumer health products. Formulators must know what the industry faces in potential and challenges, how various approaches to formulation work and regulatory implications around the globe. Dissecting the status quo of this growing  industry is the first threshold to success.

While developers, R&D scientists, marketers and academic references prolifically use the terms “nutraceuticals”, “functional foods”, “functional beverages”, and the like, these terms are unrecognized by regulatory bodies and governance. This has created ambiguity and complexity that is becoming a growing conversation. At this juncture, however, understanding the basic approach to managing “nutraceuticals” by the major markets is the key to getting started.

In the USA, the terms “nutraceutical” and “functional foods/beverages” are not legally recognized regulatory categories. Instead, products marketed within these sectors are generally regulated according to their composition, dosage form and intended use, most commonly as “dietary supplements” or “conventional foods.”

• Dietary Supplements: include products containing dietary ingredients, such as vitamins, minerals, herbs/botanicals, amino acids, enzymes, fiber and fatty acids. Forms include tablets, capsules, soft gels, gummies, powders and liquids. Dietary Supplements are governed by rules of the Dietary Supplement Health and Education Act (DSHEA) of 1994.
• US Conventional Foods: products considered “functional foods” within the nutraceutical sector are generally regulated as conventional foods. These products fall primarily under US Food and Drug Administration (FDA) oversight through the Human Foods Program.

Within the EU, the terms “nutraceutical” and “functional food” are not legally defined regulatory categories. Products marketed within these sectors are regulated according to their composition, intended use and claims, with products commonly falling under the following regulatory frameworks:

• Conventional foods: Food products intended for human consumption, including processed, partially processed or unprocessed substances or products intended to be, or reasonably expected to be, ingested by humans.
• Novel foods: Foods or food ingredients that were not consumed to a significant degree within the EU before 15^th May 1997. Novel foods require pre-market authorization under the EU Novel Food Regulation before they can be placed on the market.
• Food supplements: Consumable foods that “supplement the normal diet which are concentrated sources of nutrients or other substances”.

As it is easy to see, even in this introduction, the lack of singularity in language, form and substance surrounding the nutraceutical products industry is becoming a growing, and significant conversation. For the purposes of this article, as a nutraceutical industry reference and discussion, industry terms will be used, and regulatory terms will be used when referencing legal or compliance matters.

Also, of significant impact is the explosive growth that the worldwide production of these commodities is experiencing, with the potential for tremendous fiscal growth, further emphasizing that this conversation is an important one. The 2025 global nutraceuticals market size was estimated at USD 636.2 billion and is projected to reach USD 1,151.5 billion by 2033, growing at a CAGR of 7.7% (source). As formulators strategize how to leverage the robust market opportunity, there are many questions for developers to consider, designing product classification and dosage forms, targeting consumer preferences, health claims and regulations.

Nutraceuticals and Dietary Supplements: What are they?

Most people, if asked what a nutraceutical is would answer “a dietary supplement.” And while dietary supplements share similarities, there are key differences between them, differing in purpose and composition. Learn more about the difference. This working guide will discuss the top categories of nutraceuticals (functional foods/beverages, dietary supplements and medical foods).

Key Takeaways

• What are primary nutraceutical classifications and categories, and what distinguishes them
• Understanding how each classification is applied by formulators and what it entails
• The difference between traditional and non-traditional functional foods and medical foods
• Regulatory and governance considerations for nutraceutical products
• Matching nutraceutical form to active ingredient basics
• Applying the chemical nature classification for scientists
• Clean label and label friendly practices

How Are Nutraceuticals Classified?

There are multiple classifications of nutraceuticals. This article will look through the lenses of the two most common classifications: Product Type and Chemical Nature.

A third classification, by Health Function, while not part of this discussion, is a framework useful for marketing to consumer-facing audiences and in developing label claim strategies. To apply the Health Function approach to a project, formulas are presented and positioned according to specific health conditions (i.e., cardiovascular health, bone and joint health) or health interests (i.e., sports performance nutrition, weight management).

Nutraceutical Classification by Product Type

The prevalent use of the Product Type classification underscores current labeling ambiguities across regions, while providing a practical response. Product Type classification appeals as a versatile framework with well-defined categories suited to many nutraceuticals. The quick reference table gives an at-a-glance resource.

With those efficiencies in mind, let’s look at how the categories shown in the table work.

Functional Foods

The Functional Foods category utilizes both whole and partial (or modified) foods. Functional foods may possess naturally occurring factors that deliver additional health benefits or use fortification and food engineering to further enrich a food, creating two development opportunities as either:

Traditional Functional Foods deliver naturally occurring benefits that exceed basic caloric nutrition in their unaltered state, without added components. Examples of traditional functional foods would be garlic, which naturally contains allicin, an immune-supporting compound or tomatoes, an abundant source of lycopene, an antioxidant that reduces oxidative stress among other benefits. There are many more traditional functional foods that present health benefits from naturally occurring elements.

Non-traditional Functional Foods are also referred to as “designer” or “fortified” foods. The Non-traditional label indicates that the added health benefits of the food were achieved through enhancement or modification of a traditional food to qualify it as a “functional” food.

Fortification can be achieved by adding substances such as fiber or vitamins to a food. It can also be achieved through biotechnology that boosts the concentration of the beneficial compounds. Examples of non-traditional functional foods are omega-3 enriched eggs, calcium-fortified orange juice or probiotic drinks.

Regulatory Considerations: USA Functional Food Health Claims

When producing functional foods (or any other form of nutraceutical), it is important to understand regulatory requirements for health claims that may be made about the final product. Health claims are any form of language, labeling or messaging that links a nutraceutical product to preventing or mitigating a disease or health condition.

Since the USA does not legally recognize “functional foods” as a term, instead assigning them as Conventional Foods. Health claims on “Conventional Foods” packaging in USA are regulated by FDA, even though the DSHEA regulates the food itself. All packaging health claims for USA products must be:

• Substantiated with scientific evidence
• Drafted with clear understanding and strict adherence to FDA claim categories and rules (Health claims, Nutrient Content Claims, Structure and Function Claims See More on USA Label Claims , See More on USA Structure and Function Claims )
  
  

Regulatory Considerations: EU Functional Food Health Claims

Health claims on conventional foods from the EU which are considered by makers and consumers as nutraceuticals and functional foods (as with the USA, the EU does not legally recognize the terms functional food or nutraceuticals) health claims must follow these principles:

• Claims may only be made if scientifically evaluated by the European Food Safety Authority (EFSA), the product meets the criteria of the evaluation, and the claim has been authorized by the EC for use.
• Nutrition claims about a product feature (i.e., high fiber, contains Vitamin C) are allowed
• Certain generic health claims related to a function are allowed (Calcium maintains normal bone health)

Dietary Supplements

Dietary supplements are a diverse and commercially significant segment of the nutraceutical family. The breadth of options across dietary supplements continues to find novel forms and functions that appeal to formulators, manufacturers and end-users.

Vitamins and minerals need little discussion whether in laboratories, regulatory or consumer circles. From the formulation and innovation perspective, they are valued as stand-alone formulas or as additions to multi-function food and beverage products. From a claims and regulatory perspective, the proven and settled scientific support is also beneficial.

Other categories of focus in supplements include botanicals, amino acids, probiotics and fatty acids. For example, while Omega-3 fatty acids have remained relevant for consumer recognition and well-established scientific support. Formulators and researchers are now trying to find novel marine and aquatic sources, while exploring stabilization and bioavailability breakthroughs.

Formulators are also taking advantage of developments in the expansion of dosage form diversity. Partner industries continue to bring enhanced features to upgrade function and stability of gummies. Coating advancements, for example, take less time, and rejuvenate known product lines. Novel features are also emerging for tablets in enteric coatings and finishes.

USA Regulatory Considerations of Dietary Supplements 21 CFR Part 111

The purpose of 21 CFR Part 111 is to establish Current Good Manufacturing Practice (cGMP) requirements for dietary supplement manufacturers, ensuring that products are consistently produced to meet established specifications for identity, purity, strength, composition and quality. Manufacturers must demonstrate the product:

• Contains an accurate ingredients profile
• Is free of contamination
• Is produced with continuous batch consistency
• Delivers stated identity, purity, strength and composition

Packaging and labelling is accurately representative of the product and complies with applicable regulatory requirements.  The EU does not have a comparable GMP regulation that applies to its dietary supplement products. All products produced by the nutraceutical industry are regulated as food products in the EU.

Medical Foods

In the USA, medical foods are a distinct regulatory category and are not classified as dietary supplements or conventional foods. Nutraceutical medical foods must specifically manage a diagnosed medical condition (i.e., Crohn’s Disease, IBD, diabetic neuropathy). The product must be consumed by mouth or feeding tube for the specific dietary management of a disease or condition for which distinctive nutritional requirements, based on recognized scientific principles, are established by medical evaluation.”

Additionally, medical food must be “under the supervision of a physician”. Medical food must be “specially formulated” for patients by condition or disease. Also, to be classified as a medical food, the formula must not have any “ordinary whole foods” (fruit/vegetable) of any kind in the formulation, and all component of medical food must be present on the GRAS database.

USA Medical Food Regulatory Requirement 21 CFR 101.9(j)(8)

Within the medical foods category, under FDA Code of Federal Regulations, medical foods are exempt from labeling requirements for nutrient content and health claims. This is due to their specialized formulation and intended use for the dietary management of diseases or conditions under medical supervision.

What is required is that medical food labels must contain is a statement of identity, net quantity of contents, manufacturer identification (or packer/distributor) contact and location, allergen information and a complete list of ingredients in descending order of prominence.

Functional Beverages

Functional beverages continue to gain favor in the nutraceutical market, driven not only by consumer preference for the convenience of a beverage, but also to deliver a variety of bioactive ingredients to promote a variety of health and nutrition goals. Another advantage to the functional beverage form is that it promotes routine consumption, supporting optimal performance. Formulators are exploring in-depth, evidence-based health platforms, even expanding to metabolic health, cardiovascular wellness and healthy aging.

One of the persistent challenges of producing viable functional beverages has been maintaining the functional benefits over time. With water as a base, it is difficult to maintain vitamin, probiotics, botanicals – most of the dietary supplement types—from breaking down. Technologies like microencapsulation are improving probiotic stability while advancements in emulsification reduce separation and improve bioavailability.

Nutraceutical Classification by Chemical Nature

This framework is most relevant to formulators and R&D scientists as an overview to selecting excipients, delivery systems and considering stability strategies.

Nutraceutical Dosage Forms: Matching Format to Active Ingredient

Dosage form selection is one of the most consequential decisions in nutraceutical product development. It directly affects bioavailability, stability, consumer acceptance and manufacturing cost. This table is a quick reference of suitable selections for different combinations of a dietary supplement nutraceutical product. In addition to an overview of potential challenges, finding the right excipients and/or coatings can make all the difference in preventing common challenges from derailing or delaying production.

Clean Label and Label-Friendly Formulation Trends

Clean label practices. A consumer-driven movement that emerged around 2000 in Europe that quickly expanded to the USA. Clean label is now a well-established practice in the nutraceutical/dietary supplement and nutrition industry. Answering the public demand for transparency, clean label brought corporate focus in ingredients disclosure, intentionally chosen excipients and coatings used in formulating stable nutraceutical products. See more about clean label.

Label-Friendly is a formulation strategy that originated with dietary supplement formulators and developers as a strategy to deliver clean label objectives while maintaining optimal product quality and performance. Formulators look for consumer-familiar or natural alternatives to synthetic ingredients where possible and seek to present an ingredient profile that is more familiar and acceptable to consumers. Label-friendly nomenclature has become a focus in colorants and coatings, whether standard or specialty coatings.

There has been no regulatory involvement to date regarding clean label and label-friendly practices in either the USA or the EU.

Related Resources

• What is a Nutraceutical?
• What Types of Coatings Are Used in the Pharma Industry?
• Benefits of Film Coating Medical Tablets
• Achieving Tablet Stability with Moisture Management
  
  

Frequently Asked Questions

What are the main types of nutraceuticals?

The “types” of nutraceuticals discussed in this article, Functional Foods, Functional Beverages, Dietary Supplements and Medical Foods cover most ingestible products in all forms. Infant Formula is a stand-alone category of nutraceutical due to its unique nature and the unique needs of its consumers—infants and toddlers.

What is the difference between a nutraceutical and a dietary supplement?

A dietary supplement is a regulated food that fills nutritional gaps providing vitamins, minerals, etc. ingredients to supplement the diet.  A nutraceutical is a food derived product with potential health benefits (i.e., disease prevention or bone health support.

What dosage forms are used for nutraceuticals?

Oral solid forms are tablets, powders, softgels, capsules, lozenges, gummies, liquids, chewables, dissolving films. Other dosage forms are liquids (i.e., drinks, mini “shots” of concentrated nutrients).  Functional beverages, in many forms from drink cans to stick pack beverages and mini shots.  Functional foods can be in any form of traditional grocery foodstuffs, bars, gummy confections, gels.

Why does nutraceutical classification matter for formulators?

As a type of food science integrated with health and/or medicinal functions, classification of nutraceutical products plays a key role in establishing a precise profile of health benefits, disease prevention and nutritional support. Classifications include:

Product Type-based classification groups by ingredient sources, in two subclassifications: Traditional foods from natural, whole sources (i.e., green tea or flaxseeds) and Non-traditional Foods from processed or combined food ingredients fortified with additional substances or engineered for enhanced benefits (i.e., calcium, probiotics).

Chemical Nature classification goes by the molecular structure of bioactives and how they synthesize rather than the source. This classification confirms mechanisms of action and standardization profiles for regulatory and compliance, and formulation efficacy.

By Function/Health benefits classification is a marketing and consumer-facing approach that groups products based on health conditions or wellness goals (i.e., bone health, gut health, sustained energy).

What are the formulation challenges for different types of nutraceuticals?

All types of nutraceutical products, whether solid oral dose, functional foods, functional beverages or infant formula face a variety of formulation challenges, such as:

Bioavailability. The ability of the body to process active ingredients and receive the intended health benefit within the functional form

Production uniformity. Ensures that the final ingredient profile, in its intended functional form is scalable and can achieve consistent dosing batch after batch. This can be difficult for formulations with many active ingredients (i.e., multivitamin)

Moisture sensitivity. A particularly high risk for swallowable oral solid forms that can cause degradation or lead to contamination.

Homogeneity. Applying only to non-traditional, modified functional food nutraceuticals, there are key challenges to consider. Overall, the finished product must be homogenous, delivering the same dosage of the added ingredient(s) throughout the consumption of the entire serving.

Absorption traps. Certain vitamins and nutrients present poor absorption results. Single nutrients can become stuck within a functional food, isolating them from being absorbed.

Faulty Complexing and Incompatibility. Certain combinations of a functional ingredient with vitamins, fiber or other ingredients can interact negatively to prevent absorption in the body.