From the Guidelines
To alleviate a dry cough at home, try drinking warm honey and lemon tea, as honey coats the throat and has natural antimicrobial properties while lemon provides vitamin C. This recommendation is based on the most recent and highest quality study available, which suggests that honey may offer more relief for cough symptoms than no treatment, diphenhydramine, or placebo 1.
Some key points to consider when trying to alleviate a dry cough at home include:
- Staying hydrated with plenty of water to thin mucus secretions
- Gargling with salt water (1/2 teaspoon salt in 8 ounces warm water) to reduce throat irritation and inflammation
- Using a humidifier or taking steamy showers to add moisture to the air, which helps soothe irritated airways
- Sucking on throat lozenges or hard candies to stimulate saliva production and coat and soothe the throat
- Elevating your head while sleeping to prevent postnasal drip that can trigger coughing
- Avoiding irritants like smoke, dust, and strong fragrances that can worsen coughing
It's also important to note that over-the-counter options, such as dextromethorphan-based cough suppressants, can provide temporary relief, but it's essential to follow package dosing instructions 1. If your cough persists beyond 2-3 weeks, is accompanied by fever, shortness of breath, or produces colored phlegm, seek medical attention as these may indicate a more serious condition requiring professional treatment.
From the FDA Drug Label
The FDA drug label does not answer the question.
From the Research
Home Remedies for Dry Cough
Some home remedies may help alleviate a dry cough. These include:
- Honey, which has been shown to provide some relief from cough symptoms in children 2, 3
- Nonpharmacological interventions such as cough control therapy, which targets refractory or unexplained chronic cough 4
- Antitussive preparations, which are available as combinations of codeine or dextromethorphan with antihistamines, decongestants, and expectorants 5
Effectiveness of Honey
Honey has been found to:
- Reduce cough frequency better than no treatment or placebo in children 3
- Have a similar effect as dextromethorphan in reducing cough frequency 3
- Be better than diphenhydramine in reducing cough frequency 3
- Provide relief from cough symptoms for up to three days 3