Most coughs from colds and upper respiratory infections clear up on their own within three weeks, but several remedies can make you more comfortable while you wait. What works best depends on the type of cough you have, how long it’s lasted, and what’s driving it. Here’s a practical breakdown of your options.
Honey: The Best-Studied Home Remedy
Honey is one of the few home remedies with solid clinical backing. A study published in JAMA Pediatrics found that parents rated honey more favorably than both a common over-the-counter cough suppressant and no treatment for relieving children’s nighttime cough and improving sleep. When compared head-to-head with the drug (dextromethorphan), honey performed about equally well.
Honey works in a few ways. It coats and soothes irritated throat tissue, acting as a natural demulcent. Its antioxidant and antimicrobial properties may also help. There’s even evidence that sweet substances in general reduce coughing by triggering extra saliva and mucus production, which lubricates the airway. A spoonful of honey before bed, or stirred into warm water or tea, is a simple starting point.
One firm safety rule: never give honey to a baby under 12 months old. Honey can contain spores from the bacterium that causes botulism. In older children and adults, healthy gut bacteria neutralize these spores before they cause harm. Babies’ digestive systems aren’t mature enough to do that, so the spores can multiply, produce a toxin, and disrupt the nervous system.
Steam, Fluids, and Salt Water
Breathing in warm steam loosens thick mucus and soothes a dry, irritated throat. The NHS recommends steam inhalation particularly when you have an irritating persistent cough, hoarseness, or a throat that feels dry. Many people find it especially helpful before bed. You can lean over a bowl of hot water with a towel draped over your head, or simply sit in a steamy bathroom with the shower running.
Staying well hydrated thins mucus throughout your airways, making it easier to clear. Warm liquids like broth, tea, or warm water with lemon do double duty: they hydrate and provide some of the same soothing throat-coating effect as steam. Gargling with warm salt water can also reduce throat irritation that triggers coughing, though this works best for coughs driven by a sore or scratchy throat rather than chest congestion.
Over-the-Counter Cough Medications
OTC cough medicines fall into two broad categories. Suppressants (the active ingredient is usually dextromethorphan, labeled “DM”) work by dampening the cough reflex in your brain. They’re most useful for a dry, nonproductive cough that keeps you up at night. Expectorants (usually guaifenesin) thin mucus so you can cough it up more easily, which helps when you have a wet, phlegmy cough you’re struggling to clear.
If your doctor prescribes something stronger, one option is a medication that calms the cough reflex at the nerve level in the lungs and airways rather than in the brain. This type of prescription treatment typically suppresses coughing for three to eight hours per dose.
Cough Medicine and Children
OTC cough and cold medicines carry real risks for young children. The FDA recommends against using them in children under 2 because of the potential for serious, even life-threatening side effects. Manufacturers voluntarily label these products with a stronger warning: “Do not use in children under 4 years of age.” The same applies to homeopathic cough products. The FDA has found no proven benefits for them and urges parents not to give homeopathic cough and cold remedies to children younger than 4.
For young children, honey (if over age 1), fluids, a cool-mist humidifier, and saline nose drops are safer options. Never give a child a medicine packaged for adults, and be careful not to double up on products containing the same active ingredient.
Elevating Your Head and Controlling Your Environment
Coughing often worsens at night because lying flat allows mucus to pool in the back of the throat. Propping yourself up with an extra pillow or two keeps mucus draining downward and reduces that postnasal-drip tickle. Dry indoor air, especially in winter when heating systems run constantly, irritates airways and makes coughing worse. A humidifier in the bedroom adds moisture back to the air and can noticeably reduce nighttime coughing. Avoiding cigarette smoke, strong fragrances, and dust also helps prevent cough triggers from prolonging your symptoms.
When a Cough Lasts Longer Than Expected
Doctors classify coughs by duration. An acute cough lasts less than three weeks and is almost always caused by a cold, flu, or similar infection. A subacute cough lingers for three to eight weeks, often as a post-infectious hangover after the original illness has resolved. A chronic cough persists beyond eight weeks (in children, the threshold is four weeks) and usually signals something other than a simple infection.
The three most common causes of a chronic cough in adults are postnasal drip from allergies or sinus issues, asthma, and acid reflux. Reflux-related coughs can be particularly tricky to identify because you may not feel obvious heartburn. Stomach acid (or even weakly acidic fluid) irritates the esophagus and triggers cough through a reflex pathway. When reflux is the culprit, treating the acid problem often resolves the cough. In clinical studies, aggressive acid suppression eliminated or improved cough in about 28% of patients with reflux-driven chronic cough, and adding a second acid-blocking medication helped an additional 13%.
Allergies and asthma-related coughs respond to different treatments: antihistamines or nasal steroid sprays for postnasal drip, and inhaled medications for asthma. Identifying and treating the underlying cause is the only reliable way to stop a chronic cough long-term.
Signs a Cough Needs Medical Attention
Most coughs are harmless, but certain warning signs point to something more serious. Coughing up blood, losing weight without trying, persistent fever, excessive shortness of breath, hoarseness that won’t go away, or producing large amounts of mucus all warrant a visit to your doctor. Recurrent pneumonia or a heavy smoking history (roughly a pack a day for 20 years or more) also raises the stakes. Any cough that lasts beyond eight weeks in an adult or four weeks in a child should be evaluated, even if no other symptoms are present, because the longer a cough persists, the more likely it reflects a treatable underlying condition rather than a lingering cold.