Phlegm in my throat and post nasal drip after Covid

@mikedod wondering how you are feeling after several days. When I look up this BOMB it states it is not recommended to combine all these ingredients without consulting a MD. We did order some of the honey and will try that with the saline solution rinse as I have found that is approved. My husband currently takes augmented NAC so I probably won't add that to the rinse. Just curious how things are going for you and how long you plan to take the rinse or if you just did this for the three days and are now recovered from the phlegm. Thank you

@bentstiks2 About a week in and I am starting to feel giddy. It is still working like a charm. I was really worried it was placebo effect and would quit working after a few days.

Before, it was like everytime I swallowed it was real effort to try to collect all the snot and either somehow spit it out or be able to swallow it with it sticking in my throat. I'd say 90-95% improvement.

Yea, talk with your MD if you are concerned. I take NAC orally but adding it to the rinse gets much higher concentration right where it is needed and it breaks down the mucus really well and reduces inflammation. It has been since Dec. 2022 that I have dealt with this sticky snot problem. This seems to be working really well for me.

Probably going to eventually reduce honey concentration to a teaspoon, but I think higher (Tablespoon) was good to start and make real headway fast. If it stings, just add a little extra baking soda. If not using NAC, you won't need as much baking soda.

Hope it works for you. I really want to know if anyone else tries this exact protocol if they see the same dramatic effect. Good luck!

PS to reiterate here is the reasoning for each individual ingredient:

1. Salt (Sodium Chloride)
• Primary mechanism: Creates controlled osmotic pressure and supports the natural ionic environment of the nasal mucosa.
• How it helps:
• Draws water into the mucus layer, thinning highly viscous secretions and making them easier to clear.
• Mildly stimulates ciliary beat frequency, improving mucociliary transport so mucus doesn’t stagnate and irritate the trigeminal and glossopharyngeal nerves.
• Weakens biofilm matrix by dehydrating embedded bacteria.
• Specific benefit to condition: Reduces the physical “stuck” feeling and post-nasal drip volume; prevents chronic irritation that sustains nerve hyperactivation.
2. Xylitol
• Primary mechanism: Non-fermentable sugar alcohol that interferes with bacterial adhesion and quorum-sensing.
• How it helps:
• Inhibits S. aureus, Pseudomonas, and other biofilm-forming species common in chronic sinusitis by blocking their ability to stick to mucosal surfaces and form protective EPS matrices.
• Reduces bacterial signaling that upregulates MUC5AC gene expression in goblet cells.
• Makes existing biofilm more porous so other ingredients (NAC, Manuka) can penetrate deeper.
• Specific benefit to condition: Directly attacks the biofilm that keeps inflammation and hypersecretion going, leading to less mucus production and fewer post-eating reflex surges.
3. Sodium Ascorbate (buffered Vitamin C)
• Primary mechanism: Antioxidant + mild reducing agent + pH buffer.
• How it helps:
• Scavenges reactive oxygen species (ROS) that drive NF-κB activation and cytokine production (IL-6, TNF-α) in the sinus lining.
• Breaks disulfide bonds in mucin proteins, reducing mucus viscosity.
• Generates low levels of hydrogen peroxide that help disrupt biofilm when combined with transition metals in the mucosa.
• Specific benefit to condition: Lowers the oxidative/inflammatory drive behind goblet-cell hyperplasia and nerve irritation, while making thick mucus easier to clear.
4. NAC Pure Powder (N-Acetyl Cysteine)
• Primary mechanism: Potent mucolytic thiol donor and glutathione precursor.
• How it helps:
• Directly cleaves disulfide bridges in mucin glycoproteins, dramatically thinning thick, sticky mucus.
• Disrupts the extracellular polymeric substance (EPS) of biofilms, dispersing them and preventing reformation.
• Boosts intracellular glutathione, down-regulating NF-κB and reducing chronic inflammation that sustains goblet-cell overactivity.
• Specific benefit to condition: One of the most powerful ingredients for breaking the viscous mucus cycle and calming the inflammatory environment around the cranial nerves.
5. Manuka Honey (UMF 15+ or 20+ – currently full tablespoon in 8 oz during attack phase)
• Primary mechanism: High methylglyoxal (MGO) content + natural polyphenols and low pH.
• How it helps:
• MGO disrupts bacterial cell walls, inhibits quorum-sensing, and prevents biofilm formation/adhesion.
• Suppresses local cytokine production (IL-6, TNF-α) and NF-κB activation in the sinus mucosa.
• Osmotic effect draws water into mucus while MGO reduces bacterial contribution to viscosity.
• Specific benefit to condition: Provides the strongest direct anti-biofilm punch, which is critical for breaking the chronic irritation → hypersecretion → nerve sensitization loop.
6. Sodium Bicarbonate (baking soda – ¼ tsp in 8 oz)
• Primary mechanism: pH buffer and mild mucolytic.
• How it helps:
• Neutralizes excess acidity from NAC and Manuka, raising the final rinse pH closer to neutral (more comfortable and cilia-friendly).
• Weakens ionic interactions in mucin gels, making mucus easier to clear.
• Creates a less favorable environment for acid-tolerant biofilm-forming bacteria.
• Specific benefit to condition: Prevents stinging/irritation (so you can use the rinse consistently) and supports better ciliary function for long-term mucus clearance.
Overall Synergy of the Full Recipe
• Biofilm attack: Xylitol + Manuka + NAC
• Mucus thinning: NAC + salt + sodium ascorbate + bicarbonate
• Inflammation reduction: Sodium ascorbate + Manuka + NAC
• Comfort & compliance: Sodium bicarbonate
This targets every major part of the cycle (biofilm → inflammation → goblet-cell hyperplasia → viscous mucus → nerve irritation → hyper-reflexes).

I've been dealing with the thick phlegm in the back of mouth for the past 6 years I've had Covid/Long Covid. At first I was diagnosed with an ulcer. Cured that by taking famotidine but also diagnosed with GERD. Stopping chocolate helped (made me sad though). Since covid I can't stand the taste or smell of coffee (also made me sad) but that's another thing I was told to avoid as well as tomatoes. I've started eating chocolate and tomatoes again and just dealing with the phelgm. I still occasionally take famotidine which helps, but I was taking it twice a day for a few years.

Since covid, I've had a runny nose. It's clear and thin, like water. I can't go anywhere without tissues and it messes up my masks. But it's non-stop and thin and clear--drops if I don't wipe. Anyone else have this symptom?

@rangda I am sorry you are also dealing with this. Yes, I have the same liquid runny nose that you have after six years and three infections. I do not have it all day long, but I have enough an issue at various intervals throughout the day (every day) where you just know something is not right. I never had these issues prior to covid.

I have tried saline rinses, all the usual suspect medications, but nothing seems to help more than temporarily, if it all.

Keep fighting, and hold on to hope!

@oly78 Thanks for your reply. I never had it before either. I've also had 3 covid infections. I don't have it all the time either. My nose always runs when it gets below 50 degrees F but this has been all year round. I've just come to accept it--my nose drips and I have to wipe it as soon as I take off my mask and carry tissues in all my pockets. I haven't tried any medication for it; I'm taking so many other meds that I can't bear to add another one. It's annoying but not as annoying as some other symptoms I'm still dealing with.

I was wondering if anyone else has had to deal with this post covid. I've never brought it up to any of my doctors.

I’ve had post Covid mucus build up, back of nose (not in sinuses doctors say) with post nasal drip and severe coughing episodes. Had turbinate reduction which didn’t help and made PN drip worse. On steroid nasal spray which isn’t helping. Do saline and Budesonide rinse twice a day. Nothing has helped. 3 years dealing with this. Any suggestions please?

I had COVID in January 2025, and now it’s almost April 2026 and I’m still dealing with postnasal drip every single day. I have to constantly clear my throat, probably around 15 times a day, just to feel some relief. It’s honestly starting to feel like it’s taking over my life.

I don’t even know where to begin with seeing a doctor because this is the only issue I have, and I’m only 25. The mucus in the back of my throat is really thick, almost gelatin-like, and it never goes away.

Right after I recovered from COVID, for a few months until around June 2025, I could barely walk more than 10 steps without getting out of breath. I was prescribed an inhaler and was constantly short of breath, which was really scary. Thankfully that part has gone away, but this nonstop throat mucus is still here and it’s incredibly frustrating. It’s crazy, but oddly comforting to see how many of us are dealing with this because anyone I tell them my personal life doesn’t understand me and they just brush it off as allergies or me having a common cold.