Functional Food Classification: Where Does Your Product Fall?
Thailand has no legal category called "functional food." There is no dedicated license, no separate approval track, and no equivalent of Japan's Food for Specified Health Use system. A product built around a functional ingredient still has to land in one of Thailand's existing categories, ordinary food, food supplement, or drug, and which one it lands in determines the entire registration path that follows.
Last reviewed: July 2026
Is There a Dedicated Functional Food Category in Thailand?
Thai FDA organizes regulated health products into a fixed set of categories: medicines, food, narcotic drugs and psychotropics, cosmetics, medical devices, herbal products, and hazardous substances. "Functional food" and "nutraceutical" do not appear on that list. Both terms are marketing and industry shorthand, useful for describing a product's positioning, but they carry no independent regulatory weight in Thailand the way they do in jurisdictions with a purpose-built framework.
This is a genuine feature of the Thai system, not a gap in how the rules have been researched or explained. A company arriving with a product it calls "functional food" needs to translate that label into one of the categories Thai FDA actually recognizes before a submission can be filed. Skipping that translation step, or assuming a category exists because it exists elsewhere, is where foreign brands lose time.
How Are Functional Food Products Classified in Thailand?
No single official document hands out a "functional food test." In practice, classification turns on three factors working together: dosage form, the claims made on the label, and ingredient concentration relative to established nutrient reference values.
Dosage form
A product in conventional food or beverage format, something you eat or drink as part of a meal, stays on the food track. The same functional ingredient delivered as a capsule, tablet, or powder-in-sachet format pushes the product toward the food supplement track instead, because that delivery format itself signals a supplement rather than an ordinary food to Thai FDA.
Claims made
Therapeutic or disease-treatment claims are not permitted on either food or food supplement labels. A claim that states or implies a product treats, prevents, or cures a medical condition risks reclassifying the entire product as a drug, moving it into a registration pathway built for pharmaceuticals rather than food or supplements.
Ingredient concentration
For vitamins and minerals, MOPH Notification No. 293 B.E. 2548 sets a floor of not less than 15% of the Thai Recommended Daily Intake (RDI), while MOPH Notification No. 448 B.E. 2566's annex sets the ceiling per nutrient, not a flat 100% of RDI. Content outside that floor and ceiling can require registration as a drug rather than a supplement, regardless of how the product is marketed.
The dosage-form distinction behind the food supplement category traces to Notification of the Ministry of Public Health No. 293 B.E. 2548 (2005), Re: Food Supplement.
Where common product types land
Several product types recur often enough among foreign brands entering Thailand that it is worth naming where each one typically falls, and where the boundary can move.
Fortified foods and beverages
A conventional beverage or food fortified with vitamins, minerals, or other functional ingredients generally stays on the food track, since both its format and its typical claim set fit within what the food category allows.
Probiotic products
Classification is format-dependent. A probiotic yogurt or beverage sits on the food track; a probiotic capsule or powder sits on the supplement track. Either way, probiotic products face stricter claim substantiation than most other functional ingredients, discussed further on our health claims page.
Plant-extract-containing foods
A food or beverage containing a plant extract generally stays on the food track so long as the claims made stay within permitted food claim boundaries. Therapeutic claims tied to the plant extract risk tipping the product into Thailand's separate Herbal Products category, which carries its own distinct registration framework outside the food and supplement system entirely.
Protein and sports-nutrition products
A protein-fortified bar or beverage in conventional food format stays on the food track. The same protein content delivered as a powder or capsule format shifts the product to the supplement track, following the same dosage-form logic that applies across every other category above.
What Happens If a Product Is Misclassified in Thailand?
Classification is not fixed at launch. Claim wording that drifts toward implied disease treatment or prevention, a dosage form change from conventional food to capsule or tablet, or ingredient concentration that exceeds the Thai RDI range can all trigger reclassification after a product is already on the market.
The consequences are not a simple paperwork amendment. A reclassified product can face import rejection or seizure at the border, post-market enforcement action including recall, and a requirement to restart registration under the correct category from the beginning, rather than amend the existing filing. A company that treats classification as a one-time decision made at launch, rather than a constraint that has to hold through every subsequent label and formulation change, is the company most likely to face this outcome.
