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Key Takeaways
- If Dupixent isn't working, don't assume you've “failed” treatment. Persistent eczema may be a sign that an underlying issue hasn't been identified.
- Ask why before asking what's next. Instead of immediately switching medications, investigate whether another factor could be preventing Dupixent from working as expected.
- Dupixent's prescribing information includes a warning about untreated helminth (worm) infections. This is one potential factor that may deserve discussion with your healthcare provider, depending on your individual circumstances.
- Not everyone with a helminth infection has obvious digestive symptoms. Some people may not experience the classic signs that typically prompt testing.
- A hidden source of inflammation can affect how well biologic medications perform. Parasites are just one example; other root causes may also contribute to persistent eczema.
- Root-cause investigation complements conventional care. Looking for overlooked contributors to inflammation doesn't replace your dermatologist's treatment plan—it can help provide additional context for why a medication may not be working as expected.
- Every case of eczema is unique. There isn't a single explanation for why Dupixent may stop working, which is why personalized evaluation is so important.
“You failed Dupixent.”
Those three words can completely change the way you see your body.
They make it sound like you did something wrong. Like your eczema is somehow your fault because the medication didn't work the way everyone expected it to. Maybe you've even started wondering if you're one of the unlucky people these biologic medications just don't work for.
But after years of working with clients who have chronic eczema and other inflammatory skin conditions, I've come to believe that's often the wrong question.
Instead of asking:
“Why did Dupixent fail?”
I think we should be asking:
“Why wasn't Dupixent able to work in the first place?”
That one question has led me to uncover hidden issues in some clients that no one had previously investigated. And while this isn't the answer for everyone, it may be one of the most overlooked reasons why biologic medications don't perform as expected.
In this article, I'll explain what I've discovered, why it's hiding in plain sight, and the conversation I think more patients should be having with their dermatologist.
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In This Episode:
- Why being told you've “failed” Dupixent may not tell the whole story.
- The overlooked warning hidden in Dupixent's prescribing information that few patients know about.
- What it means if you don't respond to biologic medications as expected, even when you follow your doctor’s directions.
- Ask THIS question first before switching medications that don’t seem to work well enough
- How one overlooked clue changed the direction of my client Denise’s eczema
Quotes
“When Dupixent isn't working, I don't immediately assume the medication failed. I start looking for what might be standing in its way.”
“According to Dupixent's prescribing information, untreated helminth infections should be addressed before using the medication.”
Links
Get help optimizing your health + fix your skin with my virtual clinic! (START HERE)
Dupixent Medication Website (Look under “important safety information”)
Adry Medication Website (Look under “important safety information”)
Ebglyss Medication Website (Look under “safety summary”)
421: Dupixent Not Working? The Overlooked Reason Nobody Checks For {FULL TRANSCRIPT}
One of the hardest conversations I hear clients describe is sitting in their dermatologist's office and being told they “failed” a medication.
I understand why that happens. From a conventional medical perspective, if the medication isn't controlling your eczema, the next logical step is often another medication, a higher dose, or a different biologic. That approach makes sense within the tools dermatologists have available.
But it also leaves one important question unanswered:
Why wasn't the medication working in the first place?
That's where my approach is different.
Rather than assuming your body simply didn't respond, I become curious. What hasn't been investigated yet? Is there another source of inflammation that's preventing the medication from doing its job? Could something else be keeping your immune system activated despite treatment?
Those are the kinds of questions I ask because, in my experience, chronic skin conditions rarely exist in isolation. When someone tells me Dupixent isn't working, I don't immediately assume the medication failed.
I start looking for what might be standing in its way.
The Overlooked Warning Hidden in Dupixent's Prescribing Information
Here's something that surprised me the first time I noticed it.
The prescribing information for Dupixent, along with other IL-13-blocking biologics like Adbry and Ebglyss, includes a warning about helminth (worm) infections. These medications are not intended for use in patients with untreated helminth infections because IL-13 plays an important role in your body's immune response against these parasites.
That immediately raised a question in my mind. If this warning is important enough to include in the prescribing information…
Who's checking for it?
Over the past several years, I've attended multiple dermatology conferences where I've asked pharmaceutical representatives this exact question. Every time, I received essentially the same answer.
The expectation is that YOU (the patient) would already know if they had a helminth infection and would tell their doctor.
But here's the problem: Most people are never tested. And many don't have the classic digestive symptoms that would make anyone suspect a parasitic infection in the first place.
That creates a significant gap. If no one is looking…How would anyone know?
I'm not sharing this because I believe every person whose Dupixent stopped working has a parasite. Far from it!
I believe you should know that this is exactly the type of overlooked question that deserves investigation before assuming you've simply “failed” treatment.
Why This Matters More Than You Think
One of the biggest misconceptions in chronic illness is that when a treatment doesn't work, the treatment itself must be the problem.
Now, sometimes that's true. But sometimes, a medication doesn't work because another source of inflammation is continuing to stimulate your immune system. If that underlying issue isn't identified and addressed, simply changing medications may never answer the bigger question.
That's why I encourage my clients to shift their thinking.
Instead of immediately asking: “What medication should I try next?”
I encourage them to ask: “What haven't we looked at yet?”
That one question has changed the trajectory of many cases I've worked on. And it's exactly the mindset that leads to uncovering overlooked contributors to chronic skin disease.
Denise's Dupixent Story: The Missing Piece No One Thought to Look For
One client in particular really brought this issue into focus for me. We'll call her Denise.
When Denise came to me, she was already taking Dupixent for widespread eczema. While some of her skin had improved, she still had persistent, painful rashes beneath her breasts and in other skin folds that simply refused to heal. They were so uncomfortable that getting dressed for social events often meant increasing her topical steroids and tacrolimus just to make the pain manageable.
As we worked together, we focused on many aspects of her health, including her gut, nutrition, and overall lifestyle. She experienced meaningful improvements in several areas. But those stubborn rashes wouldn't budge.
That's when I started asking a different question, the one I mentioned just above: What haven't we looked at yet?
Instead of repeating the same tests, I recommended a different type of stool analysis—one that included a microscopic examination rather than relying solely on the standard testing typically ordered through hospitals or many functional stool tests.
The results surprised everyone because a helminth infection was identified.
At that point, I sent Denise back to her dermatologist with the report because this wasn't something to ignore. The prescribing information for Dupixent specifically advises against using the medication in patients with untreated helminth infections. Once that underlying issue was addressed with her dermatologist, we finally began to see those persistent areas improve.
The medication hadn't suddenly become more powerful. It simply had the opportunity to work the way it was intended.
That experience reinforced something I've seen repeatedly in practice: Sometimes what looks like medication failure is actually an overlooked obstacle standing in the medication's way.
Does This Mean Everyone Whose Dupixent Isn't Working Has Parasites?
No.
And that's an important distinction.
The purpose of sharing Denise's story isn't to suggest that every person whose Dupixent isn't working has a helminth infection.
They don't.
Chronic eczema is complex.
Multiple factors can contribute to ongoing inflammation, including gut dysfunction, environmental triggers, nutrient deficiencies, infections, immune dysregulation, and other root causes. Every person's story is different.
What Denise's case demonstrates is something much more important. It reminds us not to stop asking questions simply because a medication isn't producing the expected results.
When I hear someone say, “Dupixent stopped working.”
My next question isn't, “What medication should you take instead?”
I’ll ask, “What could be preventing this medication from working?”
The Real Problem Isn't That Dupixent Isn't Working
One of the biggest misconceptions I see is assuming that when a biologic stops controlling eczema, the only logical next step is another prescription.
Sometimes that's absolutely appropriate.
But, as I’ve mentioned before, sometimes the medication is doing exactly what it was designed to do—and another inflammatory process is continuing to activate your immune system at the same time.
If no one investigates that possibility, the conversation stays focused on switching medications instead of understanding why the first one wasn't enough.
That's one of the reasons I'm so passionate about helping people uncover overlooked root causes. Because the goal isn't simply to collect more prescriptions; it’s to understand your body well enough to make informed decisions about your care.
What Should You Do If Dupixent Isn't Working?
If you're feeling discouraged because your eczema hasn't improved the way you hoped, I want you to know something.
Being told you've “failed” Dupixent doesn't automatically mean your body has failed treatment.
It may simply mean there's another piece of the puzzle that hasn't been investigated yet.
That doesn't mean you should stop your medication or make changes on your own.
Instead, it means it's worth having a conversation with your healthcare provider about whether there are underlying factors that could be contributing to persistent inflammation. Sometimes the answer will be no. Sometimes it will uncover something important.
Either way, asking the question is far more empowering than assuming there are no answers left to find.
The Bigger Lesson If You “Failed” Dupixent
If there's one thing I hope you take away from this article, it's this:
When a medication isn't working, don't just ask what's next. Ask why.
That simple question has guided my clinical work for years. It's helped uncover overlooked contributors to chronic skin conditions that might otherwise have remained hidden.
And it's why I believe that persistent symptoms deserve thoughtful investigation—not assumptions.
Dupixet Not Working? Let’s Start Digging.
If you've been told your Dupixent isn't working, or you've been left wondering why your eczema continues to flare despite treatment, you don't have to navigate those questions alone.
My team and I specialize in helping people uncover the overlooked contributors to chronic skin conditions by taking a comprehensive, root-cause approach. We work with clients virtually around the world, helping them identify patterns and possibilities that may not have been explored yet.
If you're ready to stop guessing and start asking better questions, schedule a Skin Repair Call with one of my associate nutritionists. Together, we'll begin exploring what might be happening beneath the surface so you can move forward with greater clarity and confidence.
Frequently Asked Questions About Dupixent Not Working
Why is my Dupixent not working anymore?
There isn't one single answer. Sometimes eczema can continue to flare because there's an underlying trigger that hasn't been addressed, even while you're taking Dupixent. Rather than assuming the medication has failed, it's worth discussing with your healthcare provider whether another factor could be contributing to ongoing inflammation.
Can Dupixent stop working over time?
Some people notice that Dupixent doesn't seem to provide the same level of symptom control over time. There are several possible reasons for this, including changes in your immune system, new environmental triggers, or other underlying health issues. It's important to investigate why your symptoms have changed rather than automatically assuming the medication has stopped working.
Does “failing Dupixent” mean the medication failed?
Not necessarily.
The phrase “failed Dupixent” is commonly used in medicine to describe a treatment that didn't achieve the desired outcome. However, that doesn't always mean the medication itself is the problem. Sometimes an underlying issue may be preventing the medication from working as intended.
Can a parasite make Dupixent less effective?
According to Dupixent's prescribing information, untreated helminth (worm) infections should be addressed before using the medication because IL-13 plays a role in the body's immune response to these infections. This does not mean everyone whose Dupixent isn't working has a parasite. It does mean that, in some situations, it's an important conversation to have with your healthcare provider.
Should I be tested for parasites before starting Dupixent?
That decision should be made with your healthcare provider based on your medical history, symptoms, and risk factors. Jennifer's clinical experience suggests that this topic isn't always discussed, even though helminth infections are addressed in the prescribing information. If you have concerns, ask your dermatologist whether additional evaluation is appropriate for your situation.
What should I do if my eczema is still flaring while taking Dupixent?
Don't stop your medication without speaking with your prescribing clinician. Instead, schedule an appointment to discuss your symptoms and ask whether there could be other contributors to persistent inflammation. Looking for overlooked root causes may help guide your next steps.
Are parasites the only reason Dupixent may not work?
No.
Persistent eczema can have many contributing factors, including environmental triggers, gut health concerns, immune dysregulation, infections, nutritional deficiencies, and other underlying issues. A helminth infection is just one possibility discussed in this article and is not the cause in every case.
How do I know if there's another root cause behind my eczema?
Persistent symptoms despite treatment can sometimes be a clue that another contributing factor hasn't been identified. Working with a skilled and skin-focused practitioner who takes a comprehensive approach can help uncover patterns that may not have been explored during routine care. My virtual clinic works with clients worldwide (more information on getting help HERE).
Is it possible to improve eczema even if Dupixent isn't working?
Every person's case is unique. If your eczema isn't responding the way you expected, it's worth taking a step back to investigate why rather than assuming you've run out of options. Sometimes identifying overlooked contributors to inflammation can help you and your healthcare team make more informed treatment decisions.
When should I seek additional help?
If you've tried multiple treatments, your symptoms continue to interfere with daily life, or you feel like your questions aren't being answered, it may be time to seek a more comprehensive evaluation. Understanding what's driving your inflammation is often the first step toward building a more personalized plan. My virtual clinic has worked with over 1000 clients worldwide (Learn more here) or you can join my free webinar training that goes in depth on this topic and loads more HERE.
What if no one has been asking the right questions?
Sometimes the biggest breakthrough doesn't come from finding a new treatment—it comes from investigating your symptoms from a different perspective. If you've been told to simply switch medications without understanding why your current treatment isn't working, it may be worth taking a closer look at what could be driving your inflammation in the first place.
Important: This article is not suggesting that everyone whose Dupixent isn't working has a parasite or helminth infection. Denise's story illustrates one overlooked possibility discussed in Dupixent's prescribing information. Every person's case is unique, and appropriate evaluation should be guided by your healthcare provider.
