A cough from a cold or upper respiratory infection typically lasts three to eight weeks, but several remedies can reduce its intensity and help you sleep better while your body recovers. What works best depends on whether your cough is dry and ticklish or wet and productive, how long it’s been going on, and whether an underlying condition is driving it.
Honey: The Simplest Effective Remedy
A half-teaspoon (2.5 mL) of honey taken before bed reduces cough frequency more effectively than the standard cough suppressants found in most pharmacy aisles. In a clinical trial comparing honey to dextromethorphan (the active ingredient in most OTC cough syrups) and diphenhydramine (the antihistamine in many nighttime formulas), the honey group saw cough frequency scores drop from about 4.1 to 1.9 on a standardized scale, while the no-treatment group only dropped from 4.1 to 3.1. Both medications fell somewhere in between.
You can take honey straight, dissolve it in warm water, or stir it into herbal tea. It coats and soothes the throat, and its thick consistency may help calm the irritation that triggers the cough reflex. One important exception: never give honey to children under 12 months old due to the risk of infant botulism.
Over-the-Counter Cough Medicines
OTC cough products generally contain one or both of two active ingredients. The first is a cough suppressant (dextromethorphan), which works by dampening the cough signal in the brain. The second is an expectorant (guaifenesin), which thins mucus and increases fluid in your airways so you can cough it up more easily. Many products combine both.
Choosing between them comes down to your cough type. A dry, hacking cough that keeps you awake benefits from a suppressant. A wet, chesty cough where you feel mucus rattling around responds better to an expectorant, since the goal there is to get the mucus out, not hold it in. Combination products try to address both, but if your cough is clearly one type, a targeted product makes more sense.
The standard liquid dose for adults is 20 mg dextromethorphan with 200 mg guaifenesin every four hours, up to six doses per day. Tablet forms are typically taken every 12 hours. Stick to the labeled dose, because dextromethorphan in large amounts can cause serious side effects.
Age Restrictions for Children
The FDA does not recommend OTC cough and cold medicines for children under 2, citing the risk of serious, potentially life-threatening side effects. Manufacturers go further, voluntarily labeling most products with a cutoff of age 4. The FDA also cautions against homeopathic cough products for children under 4, noting no proven benefits. For young children, honey (if over age 1), fluids, and humidity are safer options.
Humidity and Warm Fluids
Dry air irritates already-inflamed airways and makes coughing worse, especially at night. A humidifier in your bedroom adds moisture that can ease coughing and congestion. Cool-mist humidifiers are the safer choice for households with children since warm-mist models and steam vaporizers pose a burn risk. By the time the water vapor reaches your lower airways, it’s the same temperature regardless of the type of humidifier you use.
One caveat: humidifiers that hold standing water can breed bacteria and mold, then disperse those into the air. Clean your humidifier regularly and change the water daily. Warm-mist models tend to release less of this contamination, but they carry the burn risk, so it’s a tradeoff.
Warm liquids in general, including tea, broth, and warm water with lemon, help loosen mucus and soothe an irritated throat. Staying well hydrated thins secretions, making a productive cough more effective at clearing your airways.
Pelargonium Extract for Acute Bronchitis
If your cough is tied to acute bronchitis, a plant extract from the roots of Pelargonium sidoides (sold under brand names like Umcka) has solid clinical evidence behind it. A meta-analysis of 11 randomized, placebo-controlled trials covering nearly 2,200 participants found that roughly 89% of adults taking the extract experienced at least a 50% reduction in cough intensity by day seven, compared to about 48% of those on placebo. In children and adolescents, the numbers were 80% versus 41%. About a quarter of adults on the extract stopped coughing entirely within a week.
It’s available as drops, tablets, or a children’s syrup at most pharmacies and health food stores. This is one of the better-studied herbal cough remedies, though it’s specifically effective for bronchitis rather than every type of cough.
When a Cough Has a Deeper Cause
If your cough has dragged on for more than eight weeks, something beyond a lingering virus is likely responsible. The three most common culprits for chronic cough are postnasal drip, acid reflux, and asthma.
Postnasal drip (sometimes called upper airway cough syndrome) happens when excess mucus from your sinuses drips down the back of your throat, triggering a cough. You might notice it more when lying down. First-generation antihistamines paired with a decongestant are the standard first step. If the cough improves, that confirms the diagnosis and you continue the antihistamine. Nasal steroid sprays can also help by reducing the inflammation driving the drip.
Acid reflux can cause a chronic cough even without classic heartburn symptoms. Stomach acid irritates the throat and airways, and you may notice the cough worsening after meals or when lying flat. Acid-reducing medications taken before meals for at least eight weeks are the typical approach. Over-the-counter antacids that form a physical barrier against reflux can supplement this or serve as a starting point.
Asthma-related cough, sometimes called cough-variant asthma, produces a dry cough without the wheezing most people associate with asthma. It often worsens at night, during exercise, or in cold air. If you suspect this pattern, a doctor can confirm it with breathing tests and prescribe an inhaler.
Red Flags That Need Attention
Most coughs resolve on their own, but certain symptoms alongside a cough signal something more serious: coughing up blood, unexplained weight loss, hoarseness that doesn’t go away, significant shortness of breath, fever that won’t break, or recurrent bouts of pneumonia. A cough producing large amounts of discolored mucus that keeps getting worse rather than better also warrants evaluation. These don’t necessarily mean something dangerous, but they need a proper workup to rule out conditions like infections, lung disease, or other treatable problems.