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What should I not drink when I have a cough?

4 min read

Staying properly hydrated is crucial when you have a cough, as dehydration can thicken mucus and exacerbate symptoms. While water is always your best option, many common beverages can unintentionally irritate your throat, promote inflammation, or worsen your cough.

Quick Summary

Dehydration from caffeinated, alcoholic, and sugary drinks can thicken mucus and irritate the throat, making coughing worse. Certain beverages can also cause inflammation or acid reflux. Focus on hydrating fluids and soothing teas for better relief.

Key Points

  • Avoid Caffeine: Drinks with caffeine like coffee and energy drinks are diuretics that cause dehydration and can thicken mucus.

  • Steer Clear of Alcohol: Alcohol dehydrates the body, suppresses the immune system, and can directly irritate your throat, worsening your cough.

  • Limit Sugary Drinks: Sodas and high-sugar juices can cause inflammation and weaken your immune system, while carbonation can irritate a sensitive throat.

  • Consider Cutting Back on Dairy: If you feel dairy products thicken your mucus, avoid them temporarily, as this can make your cough more phlegmy.

  • Choose Warm Over Cold: Very cold drinks can irritate your throat and cause dryness, whereas warm liquids are more soothing.

  • Stay Hydrated with Alternatives: Opt for water, clear broths, and herbal teas (like ginger or peppermint) to soothe your throat and thin mucus.

In This Article

The Culprits: Drinks to Avoid When You're Coughing

When you're under the weather, it's natural to reach for familiar drinks. However, certain common beverages can actually work against your body's healing process. By understanding why these drinks are problematic, you can make smarter choices for a quicker recovery.

Caffeinated Beverages

Beverages like coffee, black tea, and some sodas contain caffeine, a natural diuretic. This means they increase the body's rate of urination, leading to fluid loss and, potentially, dehydration. For someone with a cough, dehydration is a major setback. It causes the protective mucus lining your airways to thicken and become stickier, making it harder for your body to expel irritants and resulting in more forceful, irritating coughs. Additionally, some studies suggest that caffeine can cause throat dryness, further inducing coughing. Instead of relying on a caffeine fix, it's better to prioritize rest and focus on non-caffeinated, hydrating fluids to help thin mucus and soothe your throat.

Alcoholic Drinks

Similar to caffeine, alcohol is a diuretic and significantly dehydrates the body. When sick, your immune system is already compromised, and alcohol consumption can further weaken it, prolonging your illness. Alcohol can also irritate the throat and airways directly, triggering more coughing. Some alcoholic beverages, particularly wine and beer, contain histamines and sulfites that can provoke allergic reactions in some individuals, which may also contribute to increased mucus and coughing. Furthermore, excessive alcohol can impair the function of cilia, the tiny hair-like structures in your lungs that help move mucus out, leading to a buildup of phlegm.

Sugary and Carbonated Drinks

Sodas, fruit juices high in sugar, and other sweet drinks can worsen a cough in several ways. Firstly, excessive sugar intake can hinder your immune system's effectiveness, delaying recovery. Secondly, sugar can trigger inflammation, which is unhelpful when your body is already trying to manage an infection. Finally, the high acidity and carbonation in soft drinks can irritate a sensitive, inflamed throat, triggering a more intense and persistent cough. Bad bacteria in the throat can also feed on the sugar, potentially making a sore throat worse.

Dairy Products

The link between dairy and increased mucus production is a persistent belief, though scientific evidence is mixed. Some people report that milk and other dairy products cause their existing mucus to feel thicker and more difficult to clear. For those with a phlegmy cough, this sensation can be particularly bothersome. However, other studies have found no difference in mucus production when milk is consumed. The recommendation is personal: if you find dairy worsens your symptoms, it's best to avoid it temporarily. Alternatives like plant-based milks or broths are safe options.

Acidic and Cold Beverages

Drinks with high acidity, such as some citrus juices, can irritate a sore throat, leading to increased coughing. While Vitamin C is beneficial, getting it from a source that doesn't cause irritation is a better choice. Similarly, very cold drinks can shock a sensitive throat, causing dryness and itchiness that trigger a cough. It's better to opt for room temperature or warm liquids that are more soothing.

Comparing What to Drink and What to Avoid

To simplify your choices, here is a comparison table of drinks to consider and those to skip when you have a cough.

Drink Category To Avoid Why You Should Avoid It
Caffeinated Drinks Coffee, energy drinks, black tea, some sodas Cause dehydration, thicken mucus, disrupt sleep, and can irritate the throat.
Alcoholic Beverages Beer, wine, liquor Dehydrates the body, suppresses the immune system, and can irritate the airways.
Sugary & Carbonated Soda, sugary juices, sports drinks Contain high sugar and acidity that irritate the throat, promote inflammation, and weaken immunity.
Dairy Products Milk, milkshakes, ice cream May cause mucus to feel thicker for some individuals, making it harder to clear.
Extremely Cold Drinks Iced sodas, slushies Can irritate a sensitive throat and increase dryness.

What You Should Drink Instead

Focus on hydrating and soothing your throat with these beneficial options:

  • Warm Water with Lemon and Honey: Honey is a natural cough suppressant and soothes the throat, while warm water and lemon can help with congestion.
  • Herbal Teas: Teas like ginger, peppermint, or chamomile are excellent. Ginger has anti-inflammatory properties, and peppermint's menthol can be soothing.
  • Clear Broths: Warm, clear broths like chicken or vegetable soup help with hydration and can soothe the throat.
  • Coconut Water: This is a great hydrating option that contains electrolytes to replenish lost fluids.
  • Fresh Fruit Infused Water: Add slices of cucumber or berries to water for flavor without the added sugar or acidity.

Conclusion

While a cough is an uncomfortable but necessary reflex to clear irritants from your airways, making wise drink choices can significantly influence your recovery time and comfort. The core principle is simple: focus on hydration while avoiding substances that cause further irritation, dehydration, or inflammation. By steering clear of caffeinated, alcoholic, and highly sugary beverages, you support your body's immune response and give your throat the best chance to heal. Stick to warm, soothing liquids and plenty of water to help your body fight off the infection and recover more quickly. For more guidance on managing colds and coughs, consult a reliable source like the Mayo Clinic to ensure you're following best practices for your health.

Note: This information is for general guidance and not a substitute for professional medical advice. If your cough persists or worsens, consult a healthcare provider.

Frequently Asked Questions

The belief that milk increases mucus production is a persistent myth, though scientific evidence is mixed. For some people, dairy products can make existing mucus feel thicker, making a phlegmy cough more bothersome. If you notice it worsens your symptoms, it's best to avoid it temporarily.

Coffee contains caffeine, a diuretic that can lead to dehydration. Dehydration causes mucus to thicken, making it more difficult to clear from your airways, which can worsen your cough. Caffeine can also cause throat dryness and disrupt sleep, both of which are detrimental to recovery.

It is best to avoid soda when you have a cough. The carbonation and high sugar content can irritate your throat and promote inflammation. Excessive sugar can also suppress your immune system, potentially prolonging your illness.

Yes, alcohol is bad for a cough. It acts as a diuretic, causing dehydration that thickens mucus and irritates the throat. It also suppresses the immune system, delaying your recovery time.

Extremely cold drinks can be irritating to a sensitive, inflamed throat. While a cool drink might feel good momentarily, it can cause dryness and trigger more coughing. Warm or room temperature drinks are generally more soothing.

Instead of coffee, opt for herbal teas like ginger, peppermint, or chamomile. Warm water with honey and lemon is also an excellent alternative to soothe your throat and loosen congestion.

For many, the high acidity of citrus juices like orange juice can irritate a sore throat and trigger coughing. While it contains Vitamin C, you can get this nutrient from less acidic sources or stick to plain water if you find it irritates your throat.

References

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.