What Is a Proprietary Blend on a Supplement Label?

Written by Lize Bührmann, founder of Pharmatropia.

Short answer: a proprietary blend is a named mixture of ingredients whose total amount may be shown while the amounts of the individual ingredients are not fully disclosed. It is not automatically unsafe or ineffective, but it makes meaningful dose, interaction and value comparisons more difficult.

For shoppers, “proprietary” can sound like a quality badge. In practice, it often means the formula’s exact proportions are commercially confidential. The useful question is not whether the blend has an impressive name; it is whether the label gives enough information for an informed decision.

How a proprietary blend appears on a label

A label may show a phrase such as “Botanical Performance Matrix — 1 200 mg”, followed by several ingredients. That 1 200 mg is the weight of the whole mixture, not the amount of each ingredient. If five ingredients are included, you cannot determine from the total alone whether the first contributes 900 mg and the last 5 mg, or whether the mixture is more evenly distributed.

US FDA guidance provides a clear example of how proprietary blends are declared in that market: the total blend weight is listed and ingredients are presented in descending order by weight. This is useful for understanding the label concept, but it is not South African law. See the FDA Dietary Supplement Labeling Guide.

What applies in South Africa?

South African products should be assessed against local requirements and their specific regulatory category. SAHPRA guidance for complementary medicines addresses ingredient naming, quantities, warnings and evidence expectations, but the regulatory pathway can be complex and product-specific. A US-style “Supplement Facts” panel does not by itself establish South African compliance.

Consult the current SAHPRA guideline for complementary medicines and seek regulatory advice where necessary. Guidance and product status may change, so do not rely on a marketing claim alone.

Why individual amounts matter

Evidence is dose-specific

A study usually investigates a defined ingredient at a defined amount. If a label conceals the individual quantity, you cannot tell whether the serving resembles the studied preparation. The mere presence of an ingredient is not evidence that the serving provides a meaningful amount.

Safety is dose-specific too

Interaction risk and tolerability can depend on quantity. A person using medicines may need to know the amount of caffeine, stimulant herbs, minerals or bioactive extracts—not only the blend total.

Value comparisons become difficult

Two products can display the same headline blend weight while allocating that weight very differently. Price per scoop is not enough; compare transparent active amounts, quality documentation and serving count.

Does “proprietary” mean low quality?

No. A company may protect a genuinely thoughtful formula, and some finished blends have been studied as complete products. But the burden shifts to the manufacturer to provide persuasive product-specific evidence and safety information. A transparent formula is usually easier for consumers and practitioners to evaluate.

Similarly, a fully disclosed label does not guarantee quality. Identity, contamination controls, stability, manufacturing practices and honest claims still matter. Our guide to evaluating supplement quality claims in South Africa explains why phrases such as “lab-tested” or “pharmaceutical-grade” need supporting detail.

A five-point label check

1. Find the total blend amount. Make sure it is per serving, not per container.
2. Count the ingredients. A long list inside a small total can be a reason to ask questions.
3. Look for disclosed actives. Some labels disclose important ingredients even when flavouring or support components remain grouped.
4. Check standardisation carefully. “Standardised extract” should identify the marker and amount or percentage; see what standardised herbal extract means.
5. Request evidence. Ask for batch identification, manufacturer details and a credible certificate of analysis that matches the product and lot.

Red flags that deserve a pause

• A blend name designed to imply treatment or guaranteed outcomes.
• No individual disclosure for caffeine or other ingredients where quantity is central to safety.
• “Clinically dosed” without a study of the exact formula or disclosed amounts.
• A certificate of analysis with no batch match, laboratory identity or relevant test methods.
• No contact details, warnings, batch code or expiry information.
• Testimonials used in place of composition and evidence.

When shopping online, combine label review with the checks in our South African wellness-product buying guide.

Frequently asked questions

Are proprietary blends legal?

Labelling rules depend on the country and product category. A format accepted in one market may not satisfy South African requirements. Legality also does not answer whether the disclosure is useful to you.

Are ingredients listed from highest to lowest?

That is the rule for proprietary-blend ingredients under the cited US FDA framework. Do not assume every imported or local product follows it correctly; verify the applicable label standard.

Can a proprietary blend hide an underdosed formula?

It can make underdosing harder to detect, but the label alone does not prove underdosing. Ask for individual amounts or finished-product evidence.

Is a trademarked ingredient the same as a proprietary blend?

No. A trademark can identify a particular branded raw material with a defined specification. A proprietary blend usually groups multiple ingredients while protecting their proportions.

Educational disclaimer: This article is general consumer education, not legal, regulatory or medical advice. Check current SAHPRA requirements and consult a qualified professional for a specific product.