Best Practices for Choosing Safe OTC Medications at the Pharmacy

Read the Drug Facts label - every time

You wouldn’t buy a car without checking the manual, so why pick up a medicine without reading the label? The Drug Facts label isn’t just a formality - it’s your safety guide. Since 1999, the FDA has required every OTC medicine in the U.S. to use this standard format. It’s broken down into clear sections: active ingredients, purpose, uses, warnings, directions, and other information. The active ingredients section tells you exactly what’s in the pill or liquid. If you’re taking two different products, you might accidentally double up on the same ingredient - like acetaminophen. That’s how liver damage happens. One study found that nearly 20% of people who ended up in the ER for OTC overdose didn’t realize they were taking acetaminophen in more than one product. Always check this section. If you see the same ingredient on two boxes, don’t take both.

Know what’s in your medicine - especially acetaminophen

Acetaminophen is in more than 600 OTC products. It’s in Tylenol, but also in cold medicines, sleep aids, and even some prescription painkillers. The FDA says taking more than 4,000 milligrams in a day can cause serious liver damage. For some people - especially those who drink alcohol regularly, have liver disease, or are older - even 3,000 mg can be risky. The CDC reports that acetaminophen overdose leads to about 56,000 emergency room visits every year in the U.S. That’s not a small number. If you’re not sure whether your medicine has it, look for the word “acetaminophen” or the abbreviation “APAP” on the label. If you’re unsure, ask the pharmacist. They see this mistake every day.

Don’t guess the dose - measure it

“A spoonful” isn’t a real measurement. Kitchen spoons vary wildly in size. The FDA tested household spoons and found they could hold anywhere from 2 to 20 milliliters - that’s a 200% difference. Giving a child a “spoonful” of cough syrup could mean giving them double or triple the right dose. Always use the measuring tool that comes with the medicine - a dosing cup, syringe, or oral dropper. Never use a kitchen spoon. And never guess a child’s dose based on their size. The label gives dosing by age or weight. If your child is under two, or weighs less than 24 pounds, talk to a pharmacist before giving anything. The same goes for older adults. Metabolism slows with age, and what was safe at 40 might be too much at 70.

Choose single-ingredient medicines when you can

Multi-symptom cold and flu pills might seem efficient, but they’re often dangerous. If you only have a headache and a stuffy nose, you don’t need a product that also includes a cough suppressant, an antihistamine, and a decongestant. Each extra ingredient adds risk. For example, decongestants like pseudoephedrine can raise blood pressure - bad news if you have heart disease. Antihistamines like diphenhydramine can make you dizzy or cause urinary retention in men with enlarged prostates. The Ohio Department of Aging recommends picking medicines that treat only the symptoms you have. If you’re unsure, ask the pharmacist to help you pick a targeted option. You’ll get relief faster and avoid side effects you don’t need.

Talk to the pharmacist - it’s free

Pharmacists aren’t just the people who hand you your pills. They’re trained to spot dangerous combinations, flag interactions, and recommend the safest option for your health history. If you’re on blood pressure meds, diabetes drugs, or blood thinners, a simple OTC pain reliever could interfere. Aspirin and ibuprofen can thin your blood - risky if you’re on warfarin. Antihistamines can make sedatives stronger. Even herbal supplements like St. John’s wort can clash with OTC medicines. A 2022 study showed pharmacist consultations reduced medication errors by 67% in community pharmacies. You don’t need an appointment. Just walk up to the counter with your medicine in hand and ask: “Is this safe with what I’m already taking?” Most pharmacies offer this service at no cost. It takes two minutes. It could save your life.

Know when to skip OTC and see a doctor

OTC meds are great for headaches, mild colds, heartburn, or aching muscles. But they’re not for everything. If your symptoms last more than a few days, get worse, or come with fever, rash, or trouble breathing, don’t keep self-treating. People with chronic conditions - diabetes, kidney disease, heart failure, asthma - should always check with a doctor before using OTC products. Decongestants can spike blood sugar. Antacids with sodium can worsen heart failure. Some cold medicines contain alcohol or sugar, which can be harmful for diabetics. The Merck Manual says older adults, pregnant women, and young children are especially vulnerable to OTC risks. If you’re unsure whether your symptom is “minor” enough for OTC, err on the side of caution. A quick call to your doctor beats a trip to the ER.

Keep a medicine list - and update it

Most people don’t realize how many medications they’re taking. You might be on a prescription for high blood pressure, take a daily vitamin, use a topical cream for eczema, and grab a painkiller for your back. All of it matters. Keep a written or digital list of everything you take - including OTCs, supplements, and herbal products. Update it every time you start or stop something. Bring this list to every doctor visit and every pharmacy trip. It helps your pharmacist spot interactions you might miss. For example, if you’re taking melatonin for sleep and also use a cold medicine with diphenhydramine, you’re doubling up on sedatives. That’s not obvious unless someone sees the full picture.

Store medicines safely - and check expiration dates

Heat, moisture, and light can break down medicines. Don’t keep them in the bathroom cabinet - the steam ruins them. Store them in a cool, dry place, like a bedroom drawer. Keep them out of reach of kids and pets. And never take expired medicine. The FDA says expiration dates are the last day the manufacturer guarantees full potency and safety. After that, the medicine might not work - or it could break down into harmful substances. If you’re unsure whether a pill is still good, throw it out. Most pharmacies have take-back programs for expired or unused meds. Don’t flush them or toss them in the trash. Ask your pharmacist how to dispose of them safely.

Watch for red flags on the label

Not all OTC products follow the rules. Some herbal or “natural” supplements aren’t regulated the same way. They might not have a Drug Facts label at all. If you see claims like “cures arthritis” or “100% natural and safe,” be skeptical. The FDA doesn’t approve these products the same way it does OTC drugs. Look for the “Drug Facts” heading. If it’s missing, the product may not have been tested for safety or effectiveness. Also, avoid products with no manufacturer name, no lot number, or no expiration date. These are often sold online or in unregulated stores. Stick to brands you recognize from reputable pharmacies.

Use the same pharmacy every time

When you fill all your prescriptions and buy your OTC meds at the same pharmacy, the pharmacist builds a complete record of what you’re taking. That way, they can catch a dangerous interaction before you even leave the store. If you switch pharmacies, that history gets lost. One person might be taking three different painkillers from three different stores, and none of the pharmacists know about the others. That’s how accidental overdoses happen. Even if you only buy OTCs there, stick with one pharmacy. It’s one of the simplest, most effective safety steps you can take.

Be extra careful if you’re over 65

Older adults make up just 13% of the population but account for half of all adverse drug reactions from OTC meds. Why? Because metabolism slows down, kidneys don’t filter as well, and people often take multiple medications. A common cold pill with diphenhydramine might cause confusion or falls. A decongestant could raise blood pressure dangerously. The Merck Manual says seniors should avoid antihistamines, decongestants, and NSAIDs like ibuprofen unless approved by a doctor. Instead, try acetaminophen for pain (within safe limits), saline sprays for congestion, and warm compresses for sinus pressure. Always ask your pharmacist: “Is this safe for someone my age?”