MFDS Functional Claims for Health Functional Foods: What OEM Brands Need to Know

Why Functional Claim Rules Matter Before You Pick Your Ingredients

When entering the Korean health functional food (건강기능식품) market through OEM manufacturing, the regulatory framework around functional claims shapes everything—from ingredient selection to label copy to advertising strategy. Getting this wrong late in the process is expensive.

Korea's Ministry of Food and Drug Safety (MFDS / 식약처) draws a hard line between three product categories: health functional foods, general foods, and pharmaceutical drugs. Only health functional foods may carry recognized functional claims, and only within tightly defined language boundaries.

The Three-Category Divide

Health Functional Foods (건강기능식품) may display approved functional claims when they contain MFDS-recognized functional ingredients at specified effective doses. Claims must follow approved language—e.g., "may help support immune function"—and must never imply disease treatment or prevention.

General Foods carry no right to functional claims whatsoever. Phrases like "good for fatigue" or "supports blood pressure" on a general food product constitute false or exaggerated labeling under Korean food law.

Pharmaceutical Drugs may communicate therapeutic effects, but their approval pathways are entirely separate and far more demanding. Any health functional food using drug-like language ("treats," "cures," "prevents [disease]") risks reclassification and enforcement action.

Notified Ingredients vs. Individually Recognized Ingredients

Functional claims trace back to the ingredient type:

Notified ingredients (고시형 원료) are those for which MFDS has already published functional standards and approved claim language in official notifications. Red ginseng, vitamin C, omega-3 fatty acids, probiotics, lutein, and coenzyme Q10 are common examples. Using a notified ingredient means you can apply the pre-approved functional claim language directly—no separate application needed.

Individually recognized ingredients (개별인정형 원료) require the brand or manufacturer to submit safety and efficacy data to MFDS for review and formal recognition. This path is significantly longer and costlier. For most early-stage OEM projects, building around notified ingredients is the more realistic starting point.

Permitted vs. Prohibited Claim Language

MFDS-approved language consistently uses qualified, non-absolute phrasing:

• "May help support immune function"
• "May help maintain gut health"
• "May help support eye health"

Prohibited language includes anything that:

• Names a disease ("for diabetes," "prevents hypertension")
• Claims treatment or cure ("eliminates," "heals," "cures")
• Uses absolute terms ("100% effective," "guaranteed results," "miracle ingredient")
• Implies prevention of a named medical condition

The practical rule: if the claim sounds like it belongs on a pharmaceutical package insert, it does not belong on a health functional food label.

Label Mandatory Requirements

Every health functional food label must include:

1. The 건강기능식품 designation and MFDS-authorized certification mark
2. Approved functional claim language
3. Recommended daily intake and directions
4. Ingredient names and amounts
5. Nutrition and functional information panel
6. Precautions (ingredient-specific, as specified in MFDS notifications)
7. Expiration or best-by date
8. Storage conditions
9. Manufacturer name and address (or importer information)

Precaution statements are ingredient-specific and cannot be abbreviated or omitted. Some ingredients require statements regarding use by children, pregnant women, or individuals on certain medications.

Pre-Screening and Enforcement

Korea operates a voluntary pre-screening system for health functional food advertising through designated review organizations including the Korea Health Functional Food Association (한국건강기능식품협회). Submitting advertising materials for pre-screening before publication significantly reduces the risk of post-market enforcement action.

Violations of functional claim regulations can result in corrective orders, product sales suspension, manufacturing or sales bans, and fines. Online channels—including e-commerce product pages and social media—are subject to the same enforcement standards as physical labels.