Postnasal Drip: What It Is and How to Treat It

Postnasal drip is a common condition that affects many of us (especially in the throes of cold and flu season) and causes a persistent feeling of mucus or phlegm dripping down the back of the throat.¹ This uncomfortable condition can be caused by various factors, from seasonal allergies to a sinus infection, and can trigger a range of troublesome symptoms. 

At its core, postnasal drip results from excessive mucus production in the nasal and sinus cavities, which then drains down the back of the throat. This overflow of mucus, whether due to the common cold, weather fluctuations, or even certain medications, leads to the telltale postnasal drip symptoms.^2,3 Below, we’ll discuss postnasal drip, what it is, and how to treat it for lasting symptom relief.  

What is Postnasal Drip?

Postnasal drip occurs when excess mucus drains from the nasal passageways and drips down the back of the throat. As mucus trickles down the throat, it can irritate the area, leading to various symptoms. Postnasal drip is quite common as it results from many widespread conditions, and most people experience it at some point in life.  

Possible causes of postnasal drip include:⁴ 

• Allergies, including hay fever
• Exposure to airborne irritants, like dust, smoke, or fumes
• Sinus infections

Less common causes of postnasal drip are having something stuck in the nose (this generally occurs in children), pregnancy, and some medications. Exposure to cold, dry air and eating spicy foods can give you temporary postnasal drip, although this is usually no cause for concern and should resolve quickly on its own.⁴  

What is a Sinus Infection?

A sinus infection, also known as sinusitis, is a common condition that occurs when the sinuses (a series of hollow cavities around the nose, eyes, and cheeks) become inflamed and swollen. Sinuses play a crucial role in our respiratory system by helping to filter, warm, and humidify the air we breathe. 

When the sinuses become blocked or filled with fluid (typically due to an infection or allergic reaction), the resulting sinus infection can cause: 

• Persistent nasal congestion
• Thick, discolored mucus discharge
• Facial pain and pressure
• Headaches
• Reduced sense of smell and taste
• Fever (in some cases)

Sinus infections can be caused by both viral and bacterial agents, and they often develop secondary to a common cold or other upper respiratory illness. 

Many sinus infections resolve on their own with time and proper self-care. But, in some cases, antibiotic treatment or other medical interventions may be necessary to fully clear the infection and provide relief from unpleasant symptoms.⁵ 

Postnasal Drip Symptoms 

The symptoms of postnasal drip can range from mild to severe and may include: 

• Persistent feeling of needing to clear the throat
• Chronic cough
• Sore or irritated throat
• Difficult swallowing
• Bad breath

• Nausea

Along with a persistent cough and postnasal drip, sore throat, in some cases, the excessive mucus can lead to sinus pressure, headaches, and a hoarse or raspy voice. These symptoms can be uncomfortable and disruptive to daily life, making it difficult to focus at work, sleep well, and engage in normal activities. 

Postnasal Drip Treatment

Ready to learn how to stop postnasal drip? Thankfully, there are a number of treatment options to stop postnasal drip, depending on the underlying cause. For those dealing with allergies, antihistamines, or sinus issues, a saline nasal spray may help calm the body's inflammatory response and manage mucus production.  

Staying hydrated, using a humidifier, and avoiding irritants like smoke or strong fragrances can all help to thin out and clear out mucus, the main postnasal drip symptom. Alongside these at-home postnasal drip treatment options, many people wonder: Does honey help with postnasal drip? 

Clinical research shows that honey exhibits anti-inflammatory and antimicrobial properties that may help soothe an inflamed, irritated throat.⁶ Consider adding a teaspoon of honey to warm tea or water to reap the benefits of honey for postnasal drip.  

By using a combination of over-the-counter medications like Mucinex®, prescription treatments, and lifestyle modifications, you can find the relief you need and get back to living your life without the disruption of symptoms such as coughing, congestion, and postnasal drip. 

Mucinex^® for Symptoms of Postnasal Drip

While browsing the aisles of your local drugstore, you may wonder: Is Mucinex^® good for postnasal drip? Fortunately, Mucinex^® can effectively address the excess mucus that often triggers this condition.  

So, exactly how can Mucinex^® help with postnasal drip? It contains guaifenesin, an expectorant that works by thinning and loosening the mucus in your respiratory system, allowing your body to clear it more effectively. By reducing the viscosity and stickiness of mucus, Mucinex^® can help alleviate the feeling of a constantly "stuffed up" or "dripping" throat while making it easier to clear your airways. [Text Wrapping Break][Text Wrapping Break]If you’re seeking the best cough medicine for postnasal drip, a product that contains both an expectorant and a cough suppressant may be helpful. Along with guaifenesin, some Mucinex^® products contain dextromethorphan, an active ingredient that suppresses cough.⁸ This dual-action approach makes Mucinex^® a great option for relieving symptoms associated with postnasal drip, as it helps thin mucus and calm the cough that often comes with it. 

Sinus Saline Nasal Spray 

Over-the-counter saline nasal rinses or sprays can help flush out the nasal passages and offer relief from uncomfortable postnasal drip symptoms. Mucinex^® Sinus Saline Nasal Spray comes in two spray strengths for sinus and nasal congestion: POWER-JET™ spray for tackling tough congestion and GENTLE-MIST spray for everyday congestion.  

Sinus-Max^® Severe Nasal Congestion Relief Clear & Cool 

You can combat tough congestion with Sinus-Max^® Severe Nasal Congestion Relief Clear & Cool. It’s a non-drowsy spray that can be used day and night for sinus congestion, nasal congestion, or to relieve symptoms associated with postnasal drip. The cooling menthol flavor offers immediate sinus pressure relief that lasts for up to 12 hours, while the active ingredient, oxymetazoline, temporarily constricts blood vessels to help reduce stuffiness.⁹    

Maximum Strength Sinus-Max^® Day & Night

Mucinex^® is available in a variety of formulations, including extended-release tablets and liquid gels, allowing users to choose the best option to fit their needs. Maximum Strength Sinus-Max^® Day & Night liquid gels contain acetaminophen for pain relief and dextromethorphan HBr for cough suppression. The daytime liquid gels also work to relieve excess mucus due to PND, as they contain guaifenesin to thin mucus.   

When to Visit a Healthcare Provider

Postnasal drip can be uncomfortable and may come with additional symptoms that vary depending on the underlying cause. Postnasal drip can often be managed with simple self-care measures and over-the-counter medications like Mucinex^® Sinus Saline Nasal Spray, Sinus-Max^® Severe Nasal Congestion Relief Clear & Cool, and can help manage postnasal drip symptoms such as cough, like Maximum Strength Sinus-Max^® Day & Night. But, in certain situations, it's advisable to seek medical attention from a healthcare provider. 

Postnasal drip symptoms that last longer than 10 days or are accompanied by other concerning symptoms could indicate an underlying condition like chronic sinusitis, allergies, acid reflux, or more serious problems that need to be professionally treated.¹⁰ Contact your doctor if you experience any of the following symptoms with postnasal drip: 

• Fever
• Persistent sinus pain
• Difficulty swallowing
• Significant discomfort
• Foul-smelling, bloody, or thick mucus

With support from your physician and the range of postnasal drip treatment options available today, you can achieve relief and return to your routine in comfort.  

References

1. Postnasal Drip & Sinusitis: What’s the Connection? University of Rochester Medical Center. Published December 9, 2024. 
2. Liu H, Sun C, Han Y, Shang G. [Analysis the causes and treatment of postnasal drip syndrome]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi. 2008 Jan;22(2):68-9. Chinese. PMID: 18422170.
3. Ryan MW. The patient with "postnasal drip". Med Clin North Am. 2010 Sep;94(5):913-21. doi: 10.1016/j.mcna.2010.05.009. PMID: 20736103.
4. Schmerling R. Treatments for Postnasal drip. Harvard Health. Published December 11, 2024.
5. CDC. Sinus Infection Basics. Sinus Infection. Published April 23, 2024. 
6. Stavropoulou, E., Ieronymaki, E., Dimitroulia, E., Constantinidis, T. C., Vrioni, G., Tsatsanis, C., & Tsakris, A. (2022). Anti-Inflammatory and Antibacterial Effects and Mode of Action of Greek Arbutus, Chestnut, and Fir Honey in Mouse Models of Inflammation and Sepsis. Microorganisms, 10(12), 2374. 
7. Albrecht HH, Dicpinigaitis PV, Guenin EP. Role of guaifenesin in the management of chronic bronchitis and upper respiratory tract infections. Multidiscip Respir Med. 2017 Dec 11;12:31. doi: 10.1186/s40248-017-0113-4. PMID: 29238574; PMCID: PMC5724298. 
8. Journey JD, Agrawal S, Stern E. Dextromethorphan Toxicity. [Updated 2023 Jun 26]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025 Jan-.
9. Druce HM, Ramsey DL, Karnati S, Carr AN. Topical nasal decongestant oxymetazoline (0.05%) provides relief of nasal symptoms for 12 hours. Rhinology. 2018 Dec 1;56(4):343-350. doi: 10.4193/Rhin17.150. PMID: 29785414. 
10. Nasal congestion: Sometimes more than just a stuffy nose. Mayo Clinic.