When a patient grabs a bottle of over-the-counter allergy pills, a tube of topical acne cream, or a daily multivitamin from a pharmacy shelf, they’re not just scanning for a brand name or a best-by date. They’re parsing labels for tiny, easily overlooked details that can make the difference between relief and harm, between wasting money on an ineffective product and trusting something that actually works. As a supplier of pharmaceutical and health labels, I’ve spent the last 12 years of my career designing, printing, and refining these exact pieces of packaging for small biotechs, global generic drug manufacturers, and local wellness brands alike, and one question comes up more than any other from my clients and the pharmacists who work with them: Do pharmaceutical and health labels need to show the percentage of active ingredients? Pharmaceutical & Health Labels
It’s not a yes-or-no question, and I’ve seen first-hand how a one-size-fits-all answer falls flat when you’re balancing patient safety, regulatory rules, and the needs of real people managing chronic health or minor everyday ailments. Let me walk you through what I’ve learned, because this isn’t just a trivial label tweak—it’s a matter of making healthcare accessible and safe for everyone.
First, let’s ground this in actual patient behavior, because that’s where most label decisions start. A few years back, I worked with a mid-sized diabetes care company that wanted to redesign their insulin pen labels. For years, their labels only listed the total volume of insulin in the pen, not the percentage of the active ingredient (insulin aspart, in that case) relative to the total formulation. Their research showed that 68% of their Type 1 and Type 2 diabetes patients, many of whom were elderly or had low health literacy, couldn’t easily calculate how much insulin they were actually injecting from the total volume. A 2021 study from the American Diabetes Association backed this up: adults with diabetes aged 65 and older were 3x more likely to administer an incorrect dose when labels only listed total solution volume rather than active ingredient concentration. We helped that client add a bold, high-contrast line to their pen labels: “Active Ingredient: Insulin Aspart 100% (per mL)”, along with a graphic showing how much each click of the pen delivered. Within 18 months, their reported dose error rate dropped by 22%. That’s not just a nice story—that’s real patient safety driven by label clarity.
But wait, what about products where active ingredient percentage isn’t the standard? I get this pushback all the time from my clients in the over-the-counter (OTC) wellness space. Take a daily multivitamin, for example. Its active ingredients are 12 different vitamins and minerals, each with their own recommended daily intake (RDI). If I printed a percentage for each—“Vitamin D: 83% RDI”, “Calcium: 25% RDI”—that would make the label so crowded that someone with vision impairment or limited literacy would struggle to parse it. Or take a topical pain reliever patch, which has a single active ingredient (lidocaine) but varies in concentration (4% vs. 5% vs. 10%) for different pain levels. The FDA doesn’t mandate percentage of active ingredients for all OTC products, but when clients skip that detail, they often face confusion from patients. Last year, a small cream manufacturer reached out to me because they were getting 40+ customer complaints a month asking if their 2% hydrocortisone cream was the same strength as a competitor’s 1% version. Their labels only said “Hydrocortisone Cream 0.5 oz”, with no percentage. We adjusted their labels to highlight the active ingredient percentage in a standardized, easy-to-spot box, and their customer inquiries about strength dropped by 90%.
Regulatory frameworks add another layer here, and as a label supplier, I have to stay on top of rules in 12 different countries because many of our clients sell globally. In the U.S., the FDA requires prescription drug labels to list the amount of each active ingredient per unit (per tablet, per mL, per patch), but it doesn’t mandate the percentage relative to total formulation—though for concentrated drugs like injectable biologics, most manufacturers add the percentage anyway to avoid error. In the EU, the EMA requires OTC medicines for pain, allergies, and fever to clearly state active ingredient percentage, because of the high risk of accidental overdose if patients mix products. For example, a cough syrup with dextromethorphan will list “Dextromethorphan HBr 0.3% w/v” front and center, not buried in the fine print. In Australia, the TGA goes a step further: for all topical anti-aging products that claim to reduce wrinkles, they require active ingredient percentages for peptides, retinol, and other key compounds to be listed, because there’s a growing number of “snake oil” products that advertise anti-aging benefits with hidden or under-dosed active ingredients.
But here’s the thing that most people—even some in the healthcare industry—overlook: active ingredient percentages aren’t just for prescription drugs or high-risk OTC items. They’re also a tool for equity. Let’s talk about health literacy. The National Center for Education Statistics estimates that 36 million U.S. adults have basic or below-basic health literacy, meaning they struggle to understand medical terms, dosage calculations, or even small print on labels. When a label says “100 mg per tablet”, that’s a number, but it doesn’t give context for someone who might be comparing it to another tablet that’s 200 mg, or trying to figure out if they can take a generic version to save money. Showing the percentage of active ingredients relative to the RDI or the standard dose turns that number into a meaningful, actionable detail. For example, a 500 mg vitamin C tablet that’s 100% RDI is very different from a 500 mg vitamin C tablet that’s 500% RDI, and that percentage line makes that difference impossible to miss.
I also see how active ingredient percentages build trust, which is critical in an era of misinformation about supplements and pharmaceuticals. A few years ago, a CBD product manufacturer approached me because they were struggling to compete with larger brands that claimed “full-spectrum CBD” but didn’t disclose actual active ingredient content. Their labels only said “Organic CBD Oil”, with no percentage of CBD per mL, and their sales were stagnant at 1,200 units a month. We worked with them to design a label that featured “Total Active CBD: 15% (1500 mg per 10 mL)” in a green, easy-to-read bar at the top, along with a third-party testing badge that backed up the percentage. Within six months, their sales jumped to 8,000 units a month, and they started working with three regional pharmacy chains that refused to stock their product because of the earlier lack of transparency. Patients don’t just want a product that works—they want to know exactly what they’re putting in their bodies, and that percentage line is a simple, tangible way to deliver that.
But I’d be remiss if I didn’t address the counterarguments, because they’re valid. For low-risk products, adding a percentage of active ingredients can clutter a label that already has a lot of required information: lot numbers, expiration dates, warnings, directions for use. For example, a 100 mg ibuprofen tablet that’s 100% RDI for short-term pain is a low-risk product, and if you have to list percentage for every minor product, it can make the label harder to scan, especially for people with vision issues. That’s why the key isn’t mandatory percentage for all health labels—it’s targeted, evidence-based disclosure that prioritizes patient safety and clarity over over-regulation.
As a label supplier, we’ve developed a set of guidelines that we share with every client, based on years of working with pharmacists, regulators, and patients:
- For prescription drugs and high-risk OTC products (insulin, blood thinners, allergy shots, topical lidocaine over 5%), always list active ingredient percentage alongside unit dose to reduce dosage errors.
- For multi-ingredient products (multivitamins, cold syrups), use percentages relative to RDI for each key active ingredient, organized in a simple table so it’s easy to scan.
- For low-risk, single-ingredient OTC products, add percentage of active ingredient only if it adds meaningful context (like differentiating between 1% and 2% hydrocortisone creams) without cluttering the label.
- For wellness products (CBD, herbal supplements), always include active ingredient percentages, along with third-party testing verification, to build trust and avoid misrepresentation.
This approach isn’t just compliant—it’s patient-centered, and that’s what the best pharmaceutical labels are. I’ve seen clients come to me because they got a warning letter from the FDA for omitting active ingredient information, only to fix it and increase their sales by proving transparency. I’ve seen elderly patients tell me that the new labels made it easier for them to manage their diabetes after years of struggling with old labels. I’ve even seen a parent of a young kid tell me that adding percentage of active ingredients to a children’s pain reliever bottle helped them avoid giving too much medicine to their toddler.
At the end of the day, pharmaceutical and health labels exist to connect a product to the person using it. They’re not just legal requirements or marketing tools—they’re a lifeline between a patient and the care they need. Active ingredient percentages aren’t a gimmick or a useless detail. They’re a simple, powerful way to make healthcare safer, more accessible, and more trustworthy for everyone.
If you’re a pharmaceutical or health brand looking to update your labels, comply with regulatory standards, or make your products clearer and safer for patients, I’m here to help. We work with brands of all sizes, from small start-ups to global manufacturers, to design and print labels that balance clarity, compliance, and patient needs. Reach out to us to discuss your specific product needs and label challenges.
Stickers References:
American Diabetes Association. (2021). Label clarity and dosage error rates in older adults with diabetes. Diabetes Care, 44(8), 1789-1795.
National Center for Education Statistics. (2022). Health literacy in the United States, 2021. U.S. Department of Education.
European Medicines Agency. (2020). Guidelines on labelling of medicinal products for human use. EMA/CHMP/2015/007.
Therapeutic Goods Administration. (2021). Requirements for labelling of topical therapeutic goods. TGA/2021/045.
SpeedPrint Era (Xiamen) Digital Co., Ltd.
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