5 Red Flags on Supplement Labels (And How to Read Them Like a Pro)

Red Flag #1: Proprietary Blends

A "proprietary blend" is a mixture of ingredients listed under a single umbrella with only the total weight disclosed — not the amount of each individual ingredient. For example, a label might say "Recovery Blend — 800mg" followed by a list of six ingredients. You know the blend totals 800mg, but you have no idea how much of each ingredient is actually in the product.

The FDA requires supplement manufacturers to list ingredients in descending order of weight within a proprietary blend, but this provides only rough guidance. Cohen (2014) published research in the New England Journal of Medicine highlighting how the lack of mandatory individual ingredient disclosure allows manufacturers to include popular ingredients at negligible doses — enough to put them on the label but not enough to provide any meaningful benefit.

What to look for instead: Every ingredient should have its individual dose clearly listed. If a company won't tell you exactly how much of each ingredient you're getting, that's not proprietary innovation — it's a lack of transparency.

Red Flag #2: Pixie Dusting (Underdosed Ingredients)

"Pixie dusting" is an industry term for including a popular ingredient at a dose far below what clinical research supports — just enough to list it on the label. A product might advertise "Contains Creatine!" but include only 500mg when the studied effective dose is 3–5g. Or it might boast L-theanine on the label but include just 50mg when research uses 200mg.

This practice is legal because there are no FDA requirements for supplements to contain clinically effective doses. A 2019 investigation by Labdoor, an independent supplement testing company, found that many popular supplements contained key ingredients at 20–40% of their clinically studied doses.

What to look for instead: Compare the dose on the label to the dose used in published clinical studies. If a product contains 100mg of magnesium when studies use 300–400mg, you're paying for a label claim, not a result. Clinical dosing matters — it's the difference between a supplement that may actually support your goals and one that's essentially expensive filler.

Red Flag #3: Artificial Sweeteners and Synthetic Colors

Many supplements — especially powdered drink mixes, gummies, and flavored capsules — contain artificial sweeteners like sucralose, acesulfame potassium (Ace-K), or aspartame, along with synthetic colors like Red 40 or Blue 1. These ingredients serve no functional purpose; they're added to make the product taste or look more appealing.

Research on artificial sweeteners continues to evolve. Suez et al. (2014) published a landmark study in Nature showing that artificial sweeteners may alter gut microbiome composition in ways that could affect metabolic health. While the full implications are still being studied, many consumers are choosing to avoid these ingredients as a precaution — especially in products they take daily.

Synthetic food dyes present similar concerns. The Center for Science in the Public Interest has long advocated for better labeling and restriction of synthetic dyes, noting that several dyes approved in the U.S. are restricted or banned in European Union countries.

What to look for instead: Products sweetened with natural alternatives — dates, monk fruit, stevia, or simply left unsweetened. Products with no artificial colors. If a supplement needs synthetic dyes to look appealing, ask yourself what that says about the actual ingredients.

Red Flag #4: No Third-Party Testing

The FDA does not approve dietary supplements before they reach the market. Under the Dietary Supplement Health and Education Act (DSHEA) of 1994, manufacturers are responsible for ensuring their products are safe and accurately labeled — but there is no pre-market verification. This means what's on the label may not be what's in the bottle.

Tucker et al. (2018) published research in JAMA Network Open analyzing FDA warning letters and found that between 2007 and 2016, the FDA identified 776 dietary supplements that contained unapproved pharmaceutical ingredients — including prescription drugs, banned substances, and synthetic compounds not listed on the label.

Third-party testing by independent organizations like NSF International, Informed Sport, or USP provides an additional layer of verification. These programs test for label accuracy (is the stated dose actually in the product?), purity (are there contaminants, heavy metals, or banned substances?), and manufacturing quality.

What to look for instead: Look for a third-party testing seal or a clear statement about independent lab verification. Companies that invest in third-party testing are signaling that they stand behind their label claims — and that they have nothing to hide.

Red Flag #5: Vague Health Claims and Buzzwords

"Boosts immunity!" "Burns fat fast!" "Clinically proven!" These phrases are marketing, not science. The FDA does allow certain structure/function claims on supplement labels (e.g., "supports bone health"), but claims that imply a product can treat, cure, or prevent disease are not permitted — and should raise immediate skepticism.

The word "clinically proven" is particularly misleading when used without context. Proven at what dose? In what population? Published where? A company that uses vague superlatives without citing specific research is relying on your trust rather than evidence.

What to look for instead: Specific, measurable claims backed by cited research. Compliant language like "may support," "studies suggest," or "research indicates." Companies that reference actual published studies and specific doses are far more credible than those that rely on bold adjectives and exclamation points.

How CHRY Approaches Label Transparency

We built CHRY around the principle that you should know exactly what you're putting in your body. That means:

• No proprietary blends. Every ingredient and its exact dose is listed: Tart Cherry 500mg, Magnesium Bisglycinate 300mg, Creatine 5g, L-Theanine 200mg, Apigenin from Chamomile 50mg, Beet Root 200mg.
• Clinical doses, not pixie dust. Every ingredient is included at the dose used in published research — not a fraction of it.
• Date sweetened. No sucralose, no Ace-K, no aspartame. CHRY is sweetened with dates — a whole-food sweetener that adds a touch of natural sweetness without artificial anything.
• No artificial colors. The color comes from the ingredients themselves — tart cherry and beet root.
• Honest language. We use compliant, evidence-based language because we believe the research speaks for itself. No hype. No miracles. Just ingredients that may support your recovery and sleep, backed by studies you can read yourself.

Your Label-Reading Checklist

Next time you pick up a supplement, ask these five questions:

1. Are individual ingredient doses clearly listed, or is it a proprietary blend?
2. Are the doses at clinically studied levels, or are they token amounts?
3. Does it contain artificial sweeteners, synthetic colors, or unnecessary fillers?
4. Is there evidence of third-party testing?
5. Are the health claims specific and compliant, or vague and sensational?

If a product can't pass these five checks, your money is better spent elsewhere. The supplement industry has no shortage of products that look impressive on the shelf. Your job is to look past the packaging and read what actually matters: the label.