Most coughs are caused by a common cold or upper respiratory infection and will clear up on their own within three weeks. But “on their own” doesn’t mean you have to suffer through it. A combination of simple home remedies, the right over-the-counter products, and a few adjustments to your environment can shorten a cough’s duration and make it far less miserable while it lasts.
First, Know What Kind of Cough You Have
Coughs fall into three categories based on how long they last: acute (under three weeks), subacute (three to eight weeks), and chronic (longer than eight weeks). The approach that works depends on which category yours falls into.
Acute coughs are almost always triggered by a viral respiratory infection. They’re the most common type and the most responsive to home remedies. A subacute cough that lingers after a cold is typically driven by postnasal drip, lingering airway irritation, or mucus that hasn’t fully cleared. Chronic coughs in otherwise healthy people are most often caused by postnasal drip, asthma, or acid reflux. If you’re taking a blood pressure medication called an ACE inhibitor, that alone can cause a persistent dry cough, and switching medications often resolves it.
The remedies below are geared toward acute and subacute coughs. If yours has lasted longer than eight weeks, the underlying cause needs to be identified before any remedy will stick.
Saltwater Gargling and Hydration
A saltwater gargle is one of the simplest and most effective ways to calm a raw, irritated throat that keeps triggering your cough reflex. The Mayo Clinic recommends a quarter to half a teaspoon of table salt dissolved in eight ounces of warm water. Gargle for 15 to 30 seconds, spit, and repeat a few times a day. One clinical trial found that regular use of a hypertonic saline nasal rinse (a stronger salt solution flushed through the nose) reduced the duration of upper respiratory illness by nearly two days.
Staying well hydrated in general helps thin mucus so it drains more easily instead of sitting in your throat and triggering coughs. Warm liquids like tea, broth, or warm water with lemon are especially soothing because the warmth itself helps loosen congestion. Cold water is fine too. The goal is simply to keep fluids moving.
Honey: A Surprisingly Effective Remedy
Honey coats the throat and calms the cough reflex, and multiple studies have found it performs as well as or better than common over-the-counter cough suppressants for nighttime cough relief. A spoonful of honey on its own works, or you can stir it into warm tea or warm water with lemon. Use it right before bed if nighttime coughing is your main problem. Do not give honey to children under one year old due to the risk of botulism.
Marshmallow Root and Herbal Demulcents
If your cough is dry and scratchy rather than wet and productive, marshmallow root is worth trying. It contains complex sugars called polysaccharides that form a thin protective film over irritated throat tissue, shielding it from the triggers that set off your cough reflex. That film also supports the natural mucus layer and may help damaged tissue recover faster.
In two large surveys of people using marshmallow root syrups and lozenges for dry cough, about 84% rated the treatment as “good” or “very good.” Most reported relief within 10 minutes of taking a lozenge, and the soothing effect lasted one to four hours. After four to six days of regular use, people who started with severe symptoms reported their cough had dropped to moderate or minor. You can find marshmallow root as lozenges, syrups, or loose tea in most pharmacies and health food stores.
Over-the-Counter Cough Medications
The two main categories of OTC cough medicine work in completely different ways, so choosing the right one matters.
- Cough suppressants (dextromethorphan): These act on the brain’s cough center to reduce the urge to cough. They’re best for a dry, nonproductive cough that’s keeping you awake or making your throat raw. Look for “DM” on the label.
- Expectorants (guaifenesin): These thin and loosen mucus so you can cough it up more easily. They’re better for a wet, chesty cough where you feel like mucus is stuck. You still cough, but each cough is more productive.
Some products combine both ingredients. If your cough is productive, meaning you’re actually bringing up mucus, suppressing it with a suppressant alone can be counterproductive because coughing is your body’s way of clearing your airways. In that case, an expectorant (or just extra fluids) is the better choice. Save suppressants for the dry, hacking cough that serves no useful purpose.
How to Stop Coughing at Night
Coughs almost always get worse at night. When you lie flat, mucus pools at the back of your throat and acid from your stomach can creep upward, both of which trigger coughing. A few targeted adjustments can make a real difference.
Sleep with your head elevated. Stack an extra pillow or, better yet, place a wedge under the head of your mattress. This keeps mucus draining downward instead of collecting in your throat, and it reduces acid reflux at the same time. Do a saline nasal rinse right before bed to thin out secretions and keep your nasal passages moist overnight. If you use a cough suppressant, take your dose 20 to 30 minutes before lying down so it has time to kick in.
Your bedroom environment matters too. Vacuum with a HEPA filter vacuum, wash bedding frequently, and keep the room free of smoke and strong irritants. A humidifier can help if the air is very dry, since dry air irritates already-inflamed airways. Running it during the night adds moisture that soothes your throat while you sleep.
Lifestyle Changes That Speed Recovery
Avoid cigarette smoke, vaping, and any strong airborne irritants. Inflamed airways are hypersensitive, and even secondhand smoke or strong cleaning products can set off prolonged coughing fits. If allergies are contributing, minimizing exposure to dust, pet dander, or pollen will reduce the postnasal drip that fuels the cough.
Rest genuinely helps. Your immune system clears viral infections faster when you’re sleeping well and not running yourself down. If you’re fighting a cold, the cough is the last symptom to resolve, often lingering a week or two after congestion and fatigue fade. That’s normal. It doesn’t mean you’re getting worse.
Signs Your Cough Needs Medical Attention
Most coughs resolve without any medical intervention. But certain symptoms alongside a cough signal something more serious, like pneumonia or another condition that won’t clear on its own.
Seek prompt care if you develop a fever of 102°F (38.9°C) or higher, you’re coughing up yellow, green, or bloody mucus, or you have chest pain or difficulty breathing. Go to an emergency room if you are short of breath while sitting still, have new or worsening chest pain, or feel confused. A cough that persists beyond eight weeks, even without alarming symptoms, warrants a medical evaluation to identify the underlying cause.