Do OTC Cold Medicines Actually Work? What to Know Before Cold & Flu Season

With back to school happening, most families are starting to think about the up coming cold and flu season.  With it comes the familiar trip down the pharmacy aisle looking for something, anything, that will make a stuffy nose, sore throat, or lingering cough disappear.

But here's a question we don't ask often enough: Do all of those over-the-counter cold medicines actually work?

The answer is a little more complicated than you might think...

 

The Common Cold Is Still… Very Common

More than 200 viruses can cause the common cold, with rhinoviruses being the most common. Symptoms typically peak within two to three days, although congestion, runny nose, and coughing can sometimes linger for 10–14 days.

And because colds are caused by viruses, antibiotics don't treat them. For most otherwise healthy people, your immune system ultimately has to do the work of clearing the infection while you manage symptoms and give your body the resources it needs to recover.

That brings us to the medicine cabinet.

The FDA Says One Popular Cold Medicine Ingredient Doesn't Work

For decades, oral phenylephrine has been included in countless over-the-counter cold and allergy medications marketed for nasal congestion.

Then the evidence came under renewed scrutiny.

In 2023, an FDA advisory committee unanimously concluded that the available scientific evidence did not support oral phenylephrine being effective as a nasal decongestant at the recommended OTC dose.

The FDA subsequently conducted its own review, and in November 2024, the agency took things a step further: it formally proposed removing oral phenylephrine as an approved active ingredient for OTC nasal decongestants because the available evidence did not demonstrate that it works for that purpose.

Importantly, this is an issue of effectiveness—not evidence that oral phenylephrine is unsafe when taken as directed.The FDA's proposal also applies specifically to oral phenylephrine, not phenylephrine nasal sprays.

As of 2026, the FDA has not issued a final order, meaning oral phenylephrine-containing medications may still be sold while the regulatory process continues.

So yes: you can currently walk into a store and purchase a medication containing an ingredient the FDA has proposed removing for nasal congestion because its review found it ineffective for that use.

Does That Mean All OTC Cold Medicine Is Useless?

No.

Cold medications can contain several different active ingredients designed to address different symptoms. An ineffective decongestant doesn't automatically mean the other ingredients in a combination product don't work.

For example, depending on the formulation, a cold medicine may contain ingredients intended to temporarily address pain, fever, coughing, or other symptoms.

This is why reading the Drug Facts label matters more than simply buying based on the brand name on the front of the box.

It's also important to remember what most of these products are designed to do: manage symptoms.

Reducing a headache, quieting a cough, or making it easier to breathe may help you feel more comfortable while you're sick, but those things aren't synonymous with supporting the underlying function of your immune system.

And that's where we think the conversation gets more interesting.

What Does Your Immune System Actually Need?

Your immune system isn't something that suddenly turns on when you catch a cold.

It's an incredibly complex network of cells, tissues, signaling molecules, and biological processes working around the clock. And like virtually every other system in your body, its ability to function normally depends in part on adequate nutrition.

That includes sufficient intake of micronutrients involved in normal immune function and antioxidant defenses.

It also means looking beyond the supplement cabinet.

Sleep matters. Nutrition matters. Stress matters. Movement matters. Hydration matters.

Rather than waiting until you're already sick and scrambling for a quick fix, supporting your health consistently gives your body the nutritional foundation it needs year-round.

Beyond Cold & Flu Season: Quercetin + Seasonal Support

Revive+ isn't only something to think about during cold and flu season. Its ingredient profile can also complement your wellness routine during seasonal changes—especially thanks to quercetin, a naturally occurring plant compound that has been studied for its effects on mast cells and histamine release.

Histamine is one of the primary chemicals involved in familiar seasonal allergy symptoms like sneezing, itchy or watery eyes, congestion, and runny nose. Research suggests quercetin may help stabilize mast cells and modulate the release of histamine and other inflammatory mediators involved in allergic responses.

Revive+ also contains a blend of functional mushrooms, which provide bioactive compounds studied for their roles in supporting healthy immune function and immune regulation.

This is what makes Revive+ such a versatile part of a year-round wellness routine. Rather than thinking about immune support only once you're already feeling run down, Revive+ was formulated to provide nutrients and plant compounds that support normal immune function, antioxidant defenses, and overall wellness throughout the changing seasons.

This Is Why We Created Revive+

At Protea Nutrition, we're much more interested in supporting the body consistently than promising a magic solution once you're already sick.

Revive+ was formulated as daily nutritional support for healthy immune function and antioxidant defenses.

Its formula includes nutrients such as vitamin C, vitamin D, and zinc, all of which play established roles in normal immune function, alongside a broader blend of plant compounds and antioxidants designed to complement a nutrient-dense lifestyle.

Think of it less like something you reach for only when you feel a tickle in your throat—and more like another piece of the foundation.

Because immune health isn't just a cold-and-flu-season conversation.

Your First Line of Defense Isn't Found in the Cold Medicine Aisle

There is absolutely a time and place for medications. If an OTC medication helps manage your symptoms and is appropriate for you, there's nothing inherently wrong with using it.

But symptom management and supporting overall health are two different conversations.

Simple habits still matter: wash your hands regularly, avoid touching your eyes, nose, and mouth with unwashed hands, prioritize sleep, eat a nutrient-dense diet, stay physically active, manage stress where possible, and make sure your body is receiving the nutrients it needs to function normally.

You can't eliminate every virus you're exposed to.

But you can be intentional about supporting the body that's responsible for responding to them.

And that's exactly where Revive+ fits in.

 

 

These statements have not been evaluated by the Food and Drug Administration. Protea Nutrition products are not intended to diagnose, treat, cure, or prevent any disease. Always speak with your healthcare provider regarding medications, supplements, or symptoms that are severe, persistent, or concerning.