Honey is the single best-studied food for cough relief, performing as well as common over-the-counter cough suppressants in clinical trials. But it’s not the only thing in your kitchen that can help. Several foods and drinks soothe an irritated throat, thin out mucus, or support your immune system while you recover. Here’s what actually works and what to skip.
Honey: The Strongest Evidence
In a trial of 105 children with upper respiratory infections, buckwheat honey reduced nighttime coughing and improved sleep just as effectively as the active ingredient in most OTC cough syrups. It also significantly outperformed no treatment at all. The likely reason: honey coats the throat, calming the irritated nerve endings that trigger the cough reflex. Its thick, sticky texture acts as a natural barrier on inflamed tissue.
A teaspoon or two stirred into warm water or herbal tea is the simplest way to use it. You can also take it straight. Darker varieties like buckwheat honey tend to have higher antioxidant content, which is what researchers used in the key trials. One critical safety note: never give honey to a child under 12 months old. Their digestive systems can’t yet handle the botulism spores that honey sometimes carries, and the CDC warns this can cause severe food poisoning in infants.
Warm Liquids and Chicken Soup
Staying well-hydrated thins the mucus sitting in your airways, making it easier to clear. Warm liquids do this especially well because the heat and steam also help loosen congestion in your nose and chest. Tea, broth, and warm water with lemon all work.
Chicken soup deserves its own mention. A well-known study published in the journal CHEST found that chicken soup had a mild anti-inflammatory effect, slowing the movement of certain white blood cells that contribute to the swelling and mucus production you experience during a cold. Both the chicken and the vegetables in the recipe showed this activity individually. The soup won’t cure your infection, but it combines hydration, warmth, electrolytes, and protein in a form that’s easy to eat when you feel lousy.
Ginger and Its Effect on Airways
Ginger has a long history as a cough remedy, and modern research is starting to explain why. Compounds naturally found in ginger, particularly one called 6-shogaol, help relax the smooth muscle tissue that lines your airways. When those muscles tighten during a respiratory illness, it narrows your breathing passages and worsens coughing. Lab studies on human airway tissue show that ginger-derived compounds can counteract that tightening, and researchers are actively developing them as potential asthma treatments.
For a cough, the most practical way to use ginger is in tea. Slice a thumb-sized piece of fresh ginger, simmer it in water for 10 to 15 minutes, and add honey. You get the throat-coating benefit of honey plus ginger’s anti-inflammatory properties in one cup.
Pineapple and Bromelain
Pineapple contains bromelain, a group of enzymes that break down proteins. In the respiratory tract, bromelain acts as a mucolytic, meaning it breaks apart the bonds that hold thick mucus together and makes it more fluid and easier to cough up. It also has anti-inflammatory effects that may reduce mucus production in the first place.
There’s a catch, though. Studies showing clear benefits use bromelain supplements at doses of 200 to 500 milligrams per administration, and it’s unclear whether eating pineapple delivers enough bromelain to match that. One trial did find that children who ate about a cup of pineapple daily for nine weeks had fewer viral and bacterial infections, so regular consumption seems to offer some immune support. Eating pineapple while you’re sick certainly won’t hurt, but if you’re specifically after bromelain’s mucus-thinning effects, a supplement is the more reliable route.
Marshmallow Root Tea
Marshmallow root (the plant, not the candy) produces a thick, gel-like substance when soaked in water. This mucilage physically coats the irritated lining of your throat and upper airways, forming a protective layer over inflamed tissue. Research confirms that these sticky plant sugars are bioadhesive, meaning they actually cling to the surface of your throat rather than washing away immediately. This shields raw, irritated cells from further irritation and helps rehydrate damaged tissue.
Marshmallow root is especially useful for a dry, hacking cough where your throat feels scratchy and raw. You can find it as a loose-leaf tea or in pre-made throat coat tea blends at most grocery stores. Steep it in cool or lukewarm water for best results, since cold extraction pulls out more of the mucilage than boiling water does.
Probiotic-Rich Foods
Your gut and immune system are closely connected, and there’s growing evidence that probiotics can influence how your body handles respiratory infections. In a randomized trial of children with respiratory infections, those given a daily probiotic mixture had fevers that lasted a median of two days shorter than the placebo group (three days versus five). While that study used a supplement, you can get many of the same bacterial strains from fermented foods like yogurt, kefir, kimchi, and sauerkraut.
Probiotics won’t stop a cough the way honey does in the moment. Their value is more about supporting your immune response so you recover faster and potentially get sick less often in the first place.
Foods That Can Make a Cough Worse
If your cough is related to acid reflux (a surprisingly common cause of chronic cough), certain foods will make it worse by relaxing the valve between your stomach and esophagus. Stomach acid creeps up into the throat and triggers coughing, sometimes without any obvious heartburn. According to Johns Hopkins Medicine, the main culprits include:
- Fried and high-fat foods like fast food, bacon, sausage, and pizza
- Spicy foods with chili powder, cayenne, or black pepper
- Acidic foods like tomato sauce and citrus fruits
- Chocolate, peppermint, and carbonated drinks
If your cough lingers for weeks and gets worse after meals or when lying down, reflux could be the trigger. Cutting these foods for a couple of weeks is a simple way to test whether that’s the case.
Dairy Doesn’t Actually Increase Mucus
You’ve probably heard that milk makes mucus worse. It doesn’t. The Mayo Clinic confirms that drinking milk does not cause your body to produce more phlegm. What actually happens is that milk and saliva mix to form a slightly thick coating in your mouth and throat, which feels like extra mucus but isn’t. That sensation fades quickly. If warm milk or a milky tea sounds comforting when you’re sick, there’s no reason to avoid it.