Legal Requirements For Starting A Supplement Company In New Zealand

Starting a supplement company can be an exciting move - whether you’re developing your own formulation, importing products to sell online, or building a retail brand that you want to scale.

But supplements sit in that “in-between” space where customers expect health-related benefits, regulators expect accuracy, and your reputation depends on doing things properly from day one.

In this guide, we’ll walk you through the key legal requirements for supplement company legal requirements New Zealand business owners should understand, including business set-up, product compliance basics, advertising rules, privacy, contracts, and common legal risk areas that can trip up new supplement brands.

What Counts As A “Supplement” In New Zealand (And Why It Matters)

Before you can work out your compliance steps, you need to be clear on what you’re actually selling.

In New Zealand, products that people consume for health-related reasons might fall into different regulatory buckets, such as:

• Dietary supplements (for example, vitamins, minerals, herbal products, amino acids and similar products intended to supplement the diet);
• Foods (including “functional foods” and fortified products);
• Natural health products (this is a commonly used term, but New Zealand’s Natural Health Products Act 2013 has not been brought into force, so products are generally regulated under existing food and medicine rules depending on ingredients and claims);
• Medicines (where the product or its claims bring it into a medicine-like category).

The category matters because it affects:

• what you can say in your marketing;
• labelling requirements and what information must be included;
• whether you need approvals, licences, notifications, or evidence to support what you’re selling;
• your exposure if you get it wrong (including product recalls, takedown demands, and penalties).

If you’re at all unsure whether your product sits closer to a food, supplement, or medicine - it’s worth getting advice early, because the “line” is often drawn by the claims you make, not just the ingredients.

How Should You Set Up Your Supplement Business Structure?

One of the first legal decisions you’ll make is how you’re going to operate your business. This isn’t just admin - your structure affects tax, liability, and how easy it is to bring in partners or investors later.

Sole Trader

A sole trader structure is simple and low-cost. But the main downside is that you’re personally responsible for the business’s debts and liabilities.

For a supplement company, that personal liability risk can be higher than you expect, because product issues can lead to:

• refund claims and complaints;
• allegations of misleading advertising;
• product liability and consumer safety disputes.

Partnership

If you’re building the business with someone else, you might consider a partnership - but make sure you document the relationship properly, including contributions, decision-making, exits, and what happens if you disagree.

A Partnership Agreement can save a lot of stress later, especially if one founder is handling formulation/supply and the other is driving marketing or distribution.

Company

Many supplement brands choose a company structure because it can:

• help separate personal assets from business liabilities (although this isn’t a “get out of jail free” card);
• make it easier to bring in shareholders or investors;
• support growth (for example, wholesale deals or exporting).

If you set up a company, you’ll usually want to think about governance documents early - like a Company Constitution and, if there is more than one owner, a Shareholders Agreement.

These documents become particularly important if you plan to scale fast, raise money, or have co-founders contributing in different ways.

Do You Need Licences Or Approvals To Sell Supplements?

This is one of the first questions founders ask - and the answer is: it depends on what your product is, how it’s made, how it’s supplied, and what you’re claiming.

Some supplement businesses can operate without a “licence” in the classic sense, but still need to comply with:

• food business rules under the Food Act 2014 (many businesses will need to operate under a Food Control Plan or a National Programme, depending on the type of food and activities, and register/verify through the appropriate authority);
• food standards and labelling requirements (including the Australia New Zealand Food Standards Code, where applicable);
• product safety expectations;
• advertising and consumer law obligations;
• import requirements (if you’re sourcing overseas);
• any manufacturing requirements (if you make or pack locally).

Manufacturing Vs Importing Vs White-Labelling

How you source your products affects your legal risk and compliance burden:

• Manufacturing in NZ: you’ll need strong supplier/manufacturing contracts and clear quality obligations, plus compliance with relevant food/health standards (and, if your operations fall under the Food Act 2014, the right Food Control Plan or National Programme registration and verification).
• Importing finished supplements: you’re still responsible for what you sell here - including making sure labelling and marketing meet NZ requirements, and that imported food (where your product is regulated as food) meets NZ standards.
• White-labelling: don’t assume the manufacturer’s “standard” paperwork protects you; you’ll want clear terms on quality control, recalls, specifications, IP, and responsibility for non-compliance.

From a practical point of view, your best protection is usually to combine:

• clear product specifications and testing expectations;
• contractual warranties and indemnities from suppliers/manufacturers; and
• a plan for complaints, refunds, and recalls.

Labelling, Packaging, And Claims: The Compliance Areas That Cause The Most Trouble

For many founders, the hardest part of supplement company legal requirements in New Zealand isn’t registering the business - it’s getting the product messaging right.

Because supplements relate to health and wellbeing, it’s easy to drift into claims that can trigger regulatory issues or consumer complaints.

Be Careful With Health Claims

Even if your product is high quality, you can still get into trouble if your advertising implies outcomes you can’t support.

As a general rule, you should be cautious about:

• claims that a product “treats”, “cures”, or “prevents” diseases (these types of claims can increase the chance your product is treated as a medicine, which may trigger Medsafe oversight under the Medicines Act 1981);
• before-and-after style promises (especially around weight loss or medical conditions);
• statements that sound clinical without evidence to match;
• testimonials that suggest medical outcomes (you can be responsible for marketing you publish, even if a customer wrote it).

Your Labelling Needs To Match The Product

Labelling issues are a common trigger for complaints and enforcement. While the exact requirements vary depending on product type and how it’s sold, your label should be treated as a legal document - not just a design project.

Things that often need to be checked include:

• ingredient list accuracy (including allergens where relevant);
• net weight/volume and serving size information;
• directions for use and storage (where relevant);
• appropriate warnings (for example, age restrictions, pregnancy warnings, interactions);
• country of origin and importer/manufacturer information (especially for imported products);
• any specific requirements that apply if your product is regulated as a food under the Australia New Zealand Food Standards Code (including rules around nutrition information panels and certain types of claims).

It’s also important that your label aligns with your website marketing, social media ads, and packaging inserts - inconsistent claims can create legal risk and customer distrust.

What Consumer And Advertising Laws Apply To Supplement Companies?

Even if your products are fully compliant from a “product” perspective, your business still needs to comply with New Zealand’s consumer and advertising rules.

For supplement brands, the key laws (and codes) to understand include:

Fair Trading Act 1986

The Fair Trading Act 1986 is the big one for marketing. It generally prohibits misleading or deceptive conduct and false or misleading representations.

This affects things like:

• your product benefit claims (including implied claims);
• pricing, discounts, and “limited time” offers;
• “scientifically proven” statements (you should be able to back these up);
• comparisons with competitors (even if you don’t name them).

Advertising Standards (ASA Codes)

In practice, supplement marketing is also heavily influenced by New Zealand’s Advertising Standards Authority (ASA) codes, including the Therapeutic & Health Advertising Code. These codes set expectations around social responsibility, truthfulness, and having an appropriate level of evidence for health-related claims - including claims made by influencers and in testimonials.

Consumer Guarantees Act 1993

If you sell to consumers in New Zealand, the Consumer Guarantees Act 1993 is likely to apply. That means your products must generally be:

• of acceptable quality;
• fit for purpose (including any purpose you’ve told customers it is for); and
• consistent with descriptions and representations you make.

This matters because if something goes wrong, your customers can have rights to remedies such as repair, replacement, or refund, depending on the issue.

Many supplement companies also sell online. If that’s you, your store should clearly communicate how you handle things like shipping, returns, and subscription cancellations, and make sure your terms don’t overpromise or conflict with consumer law.

Online Selling: Terms And Policies Help Set Expectations

Strong terms won’t let you “contract out” of consumer law where you can’t - but they are still very useful for:

• reducing misunderstandings about shipping timeframes and delivery risk;
• setting clear subscription rules (renewals, pauses, cancellations);
• setting acceptable use rules for your website/community;
• limiting business-to-business liability where appropriate.

If you run an ecommerce store, having tailored e-commerce terms and conditions is one of the easiest “from day one” legal foundations you can put in place.

What Legal Documents Does A Supplement Company Usually Need?

When you’re moving fast, it’s tempting to treat contracts and policies as something you’ll “sort out later”. But supplements are a high-trust product category - and having the right documents in place early can protect your cash flow, your brand, and your relationships.

Here are the documents we commonly see supplement businesses needing (your exact list will depend on your model):

Supply And Manufacturing Agreements

If you’re using a manufacturer, contract packer, formulator, or ingredient supplier, you’ll want clear written terms covering:

• product specifications and quality standards;
• testing and compliance responsibilities (including who is responsible for meeting Food Act 2014 obligations and food standards, where applicable);
• lead times and minimum order quantities (MOQs);
• pricing changes and payment terms;
• IP ownership (for example, who owns the formulation);
• recalls, defects, and indemnities.

These agreements can be the difference between a manageable issue and a business-threatening dispute if something goes wrong with a batch.

Website Terms, Subscription Terms, And Refund Process

If you sell online (especially with auto-renew subscriptions), clear customer-facing terms matter. Your terms should match how your checkout works and what your support team actually does in practice.

Privacy Policy (If You Collect Customer Data)

If you’re collecting personal information - like customer names, addresses, emails, purchase history, or health-related preferences - you need to take privacy seriously.

The Privacy Act 2020 requires you to handle personal information responsibly, including being transparent about what you collect and why. A tailored Privacy Policy is a standard starting point for many supplement brands, particularly those selling online or running email marketing campaigns.

Employment And Contractor Documents

As you grow, you might hire staff for fulfilment, customer support, marketing, or sales - or you might engage contractors like brand designers, influencers, or a freelance formulator.

It’s important that you document these relationships properly so you’re clear on expectations, pay, deliverables, and IP ownership. If you’re hiring employees, a fit-for-purpose Employment Contract is the usual baseline.

Brand Protection (Trade Marks)

Your brand can quickly become one of your most valuable assets - especially in the supplement space where trust and repeat purchases drive growth.

Registering a trade mark can help protect your:

• business name or product name;
• logo;
• taglines (in some cases).

This is particularly important if you’re investing in packaging design, influencer marketing, and retail distribution - because you don’t want to build awareness around a name someone else can copy (or already owns).

Common Legal Risks For Supplement Brands (And How To Reduce Them)

Most supplement founders aren’t trying to cut corners - but the category has a few legal “hot spots” that can catch you off guard if you’re focused on growth.

1. Overstated Marketing Claims

This is one of the quickest ways to attract complaints or enforcement, and it can also cause issues with advertising platforms and payment providers.

Tip: Make sure you can substantiate the claims you make, and be cautious about implying medical outcomes. If your ads are written by an agency, you’re still responsible for what gets published.

2. Unclear Responsibility With Manufacturers

If a supplier delivers non-compliant labels or a batch has quality issues, you need clarity on:

• who pays for rework or destruction;
• who manages the recall/communications;
• what evidence/testing is required;
• what happens if the issue is discovered after customers have purchased.

Tip: Don’t rely on emails and handshake arrangements - get the core obligations written into your manufacturing or supply agreement.

3. Customer Complaints And Refund Expectations

Supplements often have subjective outcomes, which can lead to complaints like “it didn’t work” or “it made me feel unwell”. Even when a product is compliant, you’ll want a consistent support process and clear messaging that aligns with NZ consumer law.

4. Data Handling And Email Marketing

Many supplement companies rely heavily on email marketing, retention campaigns, and loyalty programs. That can be great for growth, but it also increases your privacy responsibilities.

Tip: Be transparent about what data you collect, how you use it, and how customers can access or correct it, and make sure your marketing practices align with your stated privacy position.

5. Founder Disputes

It’s common for supplement companies to start with two or more founders - for example, one handles product development, the other handles growth and sales.

Imagine your brand takes off, but then one founder wants to exit (or stops contributing). If you haven’t agreed what happens to shares, decision-making, or IP, things can get messy quickly.

Tip: Put the rules in place early with a Shareholders Agreement and the right company governance documents so you can scale with confidence.

Key Takeaways

• Getting clear on how your product is classified (and what claims you’ll make) is a key part of meeting supplement company legal requirements in New Zealand.
• Your business structure matters: a company structure can help with growth and risk management, while a partnership should be documented with a written Partnership Agreement.
• Even if you don’t need a specific “licence”, you still need to comply with key product and operating rules (including the Food Act 2014 framework and relevant food standards/labelling rules, where applicable) and consumer-facing legal obligations from day one.
• Your marketing must comply with the Fair Trading Act 1986 (and, in practice, relevant ASA advertising codes) - avoid claims that are misleading, unsubstantiated, or too close to “treating” medical conditions.
• If you sell to consumers, the Consumer Guarantees Act 1993 affects refunds and remedies, so your online terms and customer process should align with those rights.
• Most supplement brands need strong supplier/manufacturer agreements, ecommerce terms, and a Privacy Policy - plus employment or contractor documents as they grow.
• Putting the right legal foundations in place early helps protect your brand, reduce disputes, and build customer trust as you scale.

If you’d like help with setting up your supplement business and making sure you’re meeting the right legal requirements from day one, you can reach us at 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.