Thailand Dietary Supplement OEM: 6 Decisions Every Brand Owner Must Make

Decision 1: Product Category and Dosage Form

Dietary supplements encompass a wide range. In Thailand OEM manufacturing practice, common categories include collagen, vitamins and minerals, omega-3, weight management support products, herbal extracts, functional beverages, and functional coffee or tea. Each category involves different decisions regarding raw materials, testing, and documentation. Your first step should be to commit to one category rather than trying to do everything at once.

Next comes dosage form selection. The same active ingredient can be produced as a powder sachet, capsule, tablet, bottled drink, gummy, or stick packet. Each form has its own advantages and disadvantages:

• **Powder and sticks**: easy to communicate dosing, suitable for collagen and beauty beverages, but require attention to flavor and solubility.
• **Capsules and tablets**: compact, good shelf stability, convenient for vitamins and herbal products; users may experience less differentiation in experience.
• **Bottled beverages**: excellent user experience, suited for retail channels, but cumbersome to transport and requiring sterilization processes.
• **Gummies**: appealing to younger consumers, but limited in active ingredient concentration and sensitive to heat during ground transport.

Our recommendation: choose your dosage form based on your sales channel and target customer habits, not based on what's trending online. A collagen line sold through livestream needs a different story than a vitamin line sold through pharmacies.

Decision 2: Using Existing Formulas or Custom Formula Development

This is where brand owners often feel most confused. There are three familiar paths. ODM uses the factory's pre-existing formula; you choose the flavor, potency within allowed ranges, and packaging design—this is the fastest way to get your first product. OEM manufactures according to your existing formula or specifications, suitable when switching factories or working with a nutrition expert. Full custom is co-developing a new formula from scratch, for brands seeking genuine differentiation.

Developing your own formula sounds appealing but comes with trade-offs. You'll need multiple sample rounds, must wait for test results on each version, and development costs are typically charged separately. Conversely, using an existing formula helps you reach market quickly to validate demand, then upgrade in later batches.

A practical approach we often recommend for new private label brands: start with a solid base formula, customize just 1–2 points to create identity (distinctive flavor, add a Thai herbal extract, adjust main ingredient potency), and clarify in writing who owns the formula after completion. Formula ownership terms are something to ask about at your very first consultation meeting, not when signing the contract.

Decision 3: Raw Materials and Permitted Claims

Consumers buy supplements for the benefits they expect, but regulations only allow you to make claims that are proven and registered. Therefore, raw materials and functional claims must be decided together from the start, not during label design.

Regarding raw materials, clarify three things with your manufacturing partner: origin (imported ingredients or Thai domestic), accompanying documentation for each batch (analysis sheets, origin certificates where applicable), and actual potency after manufacturing compared to declared potency. With collagen, for example, ask specifically about collagen type, source (fish or beef), and molecular size, as these directly affect how you describe your product and meet Vietnamese consumer expectations.

For functional claims, the safety principle is to only mention supporting roles, use language appropriate for dietary supplements, and absolutely avoid any wording suggesting disease treatment. Vietnamese regulations on dietary supplement claims and advertising change over time, so treat information in this article as reference only and verify with your food safety authority or regulatory service before printing labels.

Common mistake: finalize labels and advertising content first, then discover your main active ingredient can't make the claims you hoped, forcing you to reprint all packaging.

Decision 4: Packaging, Quantity, and MOQ of 1,000 Units/SKU

Dietary supplement packaging serves both as a sales tool and product protection. Stick packets need moisture-barrier films; capsules need bottles with desiccant or blister packs; beverages need bottles and caps that withstand sterilization. Have your manufacturing partner advise on materials suitable for your dosage form before discussing graphic design.

Regarding quantity, the standard MOQ for OEM manufacturing is 1,000 units/SKU. This comes from manufacturing reality: each production run requires minimum raw material quantities, packaging is printed in batches, and testing costs apply per batch, so below this level per-unit costs increase significantly. If you want to try multiple flavors, remember each flavor is a separate SKU with its own MOQ.

A small checklist to decide your first-batch SKU count:

• Do you already have your main sales channel, and what's your estimated sales volume in the first few months.
• Shelf life of your product versus your projected sales speed.
• Budget for packaging and testing multiplied by number of SKUs.
• Your ability to store inventory in Vietnam under appropriate temperature conditions.

Most brands should start with 1–2 SKUs done really well, rather than spreading across 5 SKUs. Specific pricing depends on product, dosage form, and quantity; the team will advise in detail during quotation.

Decision 5: Registration Documentation in Vietnam and Certificates from Thailand

Products manufactured in Thailand for sale in Vietnam must complete food registration according to current Vietnamese regulations. Depending on product category, the format may be self-declaration or formal registration, with differing documentation requirements. This is the brand owner's responsibility, either handled directly or through a registration service provider, so plan for it in parallel with product development—don't wait until goods arrive before starting.

From Thailand, typical documentation required for your registration file includes the product's free-sale certificate, GMP or equivalent certification of the manufacturing facility, test results for your batch, and a component description form. Documentation is provided per product when you order, and their content depends on your final formula, so any last-minute formula changes affect your registration file.

What we recommend: as soon as you finalize your formula, send the ingredient list to your Vietnamese registration service provider so they can review it in advance. This prevents discovering that an ingredient legal in Thailand isn't yet on Vietnam's approved list. Information about procedures in this article is for reference; regulations and forms may change, so verify with your regulatory authority and customs broker before importing your first batch.

Decision 6: Working Directly with Factories or Through a Manufacturing Partner

There are two approaches to OEM manufacturing of dietary supplements in Thailand. The first is finding factories yourself, working directly with their R&D and testing departments, sourcing packaging suppliers, hiring design firms, and arranging shipping. This suits you if you have someone in Thailand, can read technical documents, and have time to closely monitor each stage.

The second approach is working with a manufacturing management partner who takes end-to-end responsibility and coordinates partner factories for you. 5FINE (5fineglobal.com) operates this model: it doesn't claim to own its own factory but manages production through a network of GMP-certified partner facilities in Thailand and other markets, accompanying you from concept consultation, formula development, packaging design, registration, production, quality control, to export. For brand owners already running skincare OEM lines and wanting to expand into dietary supplements, the advantage is one contact point for both product categories.

Regardless of which path you choose, ask these questions before signing:

• What certifications does the manufacturing facility hold, and how is documentation provided per product?
• Who bears responsibility if a batch fails testing?
• How many sample approval rounds does the process include, and how are sample costs calculated?
• Who owns the formula and design after completion?
• When and how are delivery time and conditions confirmed?

Clear answers to these 5 questions tell you far more than any testimonial ever could.