What Is Post-Nasal Drip?
Post-nasal drip (PND) happens when too much mucus builds up in your nose and sinuses. This excess mucus drains down the back of your throat. You may also hear it called upper airway cough syndrome (UACS).
Your nose normally makes about 1–2 liters of mucus every day. Most of it slides down your throat without you noticing. But when your body makes more mucus than usual — or the mucus becomes thick and sticky — you start to feel it. Common sensations include:
- A dripping feeling in the back of your throat
- Throat fullness or congestion
- A constant need to swallow or clear your throat
Post-nasal drip is one of the most common causes of ongoing cough in adults. It affects millions of Americans each year.
Many different conditions can cause post-nasal drip. The most common causes include:
- Allergic rhinitis — the most common cause. Seasonal allergies (pollen) and year-round allergies (dust mites, pet dander, mold) trigger your nose to overproduce mucus.
- Non-allergic rhinitis (vasomotor rhinitis) — set off by weather changes, strong odors, cold air, or spicy foods. This type is especially common in adults over 40.
- Chronic sinusitis — ongoing sinus inflammation, especially with nasal polyps (growths in the nasal passages), leads to thick, discolored mucus that drains down the throat.
- Acid reflux — gastroesophageal reflux disease (GERD) and laryngopharyngeal reflux (LPR) can irritate your throat. This creates a post-nasal drip sensation even without extra mucus.
- ACE inhibitor medications (lisinopril, enalapril) — these blood pressure drugs cause cough and PND-like symptoms in up to 20% of users.
Telehealth works well for post-nasal drip because diagnosis relies mainly on a careful review of your symptoms. Your provider will ask about your symptom patterns, nasal congestion, sneezing, itching, heartburn, medications, and environmental triggers.
At Innocre Telehealth, our board-certified provider evaluates patients in Delaware, Maryland, and Washington. We use a step-by-step approach to find the likely cause and start the right treatment. When needed, we can arrange allergy testing, sinus CT imaging, or a referral to an ENT (ear, nose, and throat) specialist at a local facility.
Common Symptoms
Sensation of mucus draining down the back of the throat
The hallmark symptom of UACS/post-nasal drip
Chronic cough — especially at night or when lying down
Posterior drainage stimulates cough reflex; worsens supine
Frequent throat clearing
Compulsive need to clear accumulated secretions
Sore or irritated throat
Chronic pharyngeal irritation from drainage and clearing
Nasal congestion or runny nose
Often present when allergic rhinitis or sinusitis is the cause
Nausea in the morning
From accumulation of swallowed mucus overnight
Hoarseness or voice changes
Drainage irritating the vocal folds, especially in the morning
Globus sensation
Feeling of something stuck in the throat — often related to LPR/GERD
How Innocre Treats Post-Nasal Drip Online
Treatment targets the underlying cause found during your evaluation. For allergy-related post-nasal drip, the most effective options include:
- Nasal steroid sprays (fluticasone, mometasone, budesonide) — these reduce both mucus production and nasal swelling. They are the most effective treatment.
- Non-drowsy antihistamines (cetirizine, loratadine, or fexofenadine) — added when sneezing and a runny nose are prominent.
- Azelastine nasal spray — a prescription antihistamine spray that works well for both allergic and non-allergic rhinitis. It can be combined with fluticasone in a single product called Dymista for stronger relief.
Your board-certified provider prescribes these medications and sends them electronically to pharmacies across Delaware, Maryland, and Washington.
For non-allergic rhinitis, other treatments work well:
- Ipratropium bromide (Atrovent) nasal spray — reduces mucus production at the source. It works especially well for watery runny nose triggered by cold air, eating, or weather changes.
- Nasal saline rinses (Neti pot or squeeze bottle) — flushing the nose with salt water removes allergens and irritants. It also thins and loosens mucus so it drains more easily. This is strongly supported by research.
- Guaifenesin (Mucinex) — an oral mucus thinner taken at 600–1200 mg every 12 hours. It helps loosen thick mucus so it drains better.
For post-nasal drip caused by acid reflux (GERD or LPR), treatment starts with a twice-daily acid-reducing medication. Options include omeprazole 20 mg or pantoprazole 40 mg taken before meals, along with dietary changes.
An important step in every evaluation is checking whether you take an ACE inhibitor blood pressure medication. These include lisinopril, enalapril, ramipril, and benazepril. ACE inhibitors cause cough and PND-like symptoms in 10–20% of users. Symptoms usually appear within weeks to months of starting the medication.
The only effective fix is switching to a different type of blood pressure drug called an ARB (angiotensin receptor blocker), such as losartan or valsartan. ARBs control blood pressure just as well without causing cough. Most patients improve within 1–4 weeks after switching. Your provider reviews all your medications and can manage this transition safely during your telehealth visit.
⚠️ When to Go to the Emergency Room
Post-nasal drip is almost always a benign, manageable condition. Seek emergency care immediately if you experience:
- • Difficulty swallowing saliva, visible drooling, or progressive throat tightening — possible signs of epiglottitis or deep neck space infection requiring emergency airway management
- • High fever with neck pain, stiff neck, or difficulty opening the mouth (trismus) — signs of peritonsillar or retropharyngeal abscess
- • Rapidly progressing neck swelling, particularly below the jaw or involving the floor of the mouth — signs of Ludwig's angina or deep neck infection
- • Stridor — a high-pitched inspiratory sound indicating upper airway obstruction requiring immediate evaluation
- • Bloody nasal drainage in large quantities, or PND associated with unilateral nasal obstruction, facial pain, or unexplained weight loss — may require urgent ENT evaluation to rule out sinus tumor