Carbonation can temporarily thin mucus, making it easier to expel, but excessive carbonation may irritate the throat and worsen phlegm in some individuals.
Many people wonder if carbonated beverages can help clear phlegm or mucus. While some believe the bubbles might help break up congestion, research suggests carbonation doesn’t actually reduce phlegm—and may even worsen symptoms for some individuals.
The Science Behind Carbonation and Phlegm
Carbonated drinks contain dissolved carbon dioxide gas that creates bubbles when opened. Some people think these bubbles might help:
- Loosen mucus in the throat
- Stimulate swallowing to clear phlegm
- Provide temporary relief from throat irritation
However, a 2006 study published in The Journal of Laryngology & Otology found that while some patients reported symptom improvement from sipping cold carbonated water, this was likely due to the cold temperature rather than the carbonation itself.
Why Carbonation Might Actually Worsen Phlegm
Several factors make carbonated drinks potentially problematic for phlegm:
- Bloating and pressure: Carbonation can cause stomach distension that puts pressure on the diaphragm
- Acid reflux: Bubbles may weaken the esophageal sphincter, allowing stomach acid to irritate the throat
- Dehydration: Many carbonated drinks contain caffeine which can dry out mucus membranes
Better Alternatives for Phlegm Relief
Instead of carbonated drinks, consider these more effective options:
| Option | How It Helps |
|---|---|
| Warm herbal tea | Loosens mucus and soothes throat |
| Broth-based soups | Provides hydration and warmth |
| Steam inhalation | Directly moisturizes airways |
Foods That Naturally Reduce Mucus
Certain foods can help minimize phlegm production:
- Pineapple (contains bromelain enzyme)
- Ginger (natural anti-inflammatory)
- Citrus fruits (vitamin C boosts immunity)
For those interested in natural remedies, our guide on best smoothies for cough and cold offers excellent phlegm-fighting recipes.
When Carbonation Might Provide Temporary Relief
While carbonation doesn’t actually reduce phlegm, some people find temporary symptom relief from:
Cold Carbonated Water
The cold temperature may numb throat irritation temporarily
Ginger Ale
The ginger content (in real ginger ale) has anti-inflammatory properties
However, these effects are mild and temporary. For chronic phlegm issues, consider our recommendations for the best juicer for vegetables and leafy greens to create mucus-reducing juices.
Medical Conditions That Increase Phlegm
Excessive phlegm can be a symptom of various conditions:
- Allergies
- GERD (acid reflux)
- Chronic bronchitis
- Sinus infections
If phlegm persists for more than 2 weeks or is accompanied by fever, difficulty breathing, or blood, consult a healthcare professional immediately.
