Avoiding caffeine, salt and sugar can help reduce wheezing and other symptoms of asthma, notes the University of Michigan Health System. A vegan diet that excludes dairy, meats and all other animal-derived foods could also help. In some people, food additives like tartrazine, sodium benzoate and sulfites can aggravate asthma symptoms like wheezing as well. If you suspect that your wheezing is due to some kind of allergic reaction, eliminating the food allergens from your diet can alleviate your symptoms. Your doctor or another qualified healthcare professional can help you to determine what foods you're allergic to by following an "allergy elimination diet."
Although treating a specific nutrient deficiency by taking supplements will necessarily reduce your wheezing, certain deficiencies may be associated with underlying conditions that cause wheezing, says the University of Maryland Medical Center. You can try taking supplements of choline, vitamin C, quercetin, selenium, magnesium or omega-3 fatty acids like fish oil to help reduce wheezing. Beta-carotene, vitamins B6 and B12, lycopene, pycnogenol, Lyprinol, betaine, bromelain, thymus extract and molybdenum supplements could also help ease wheezing associated with asthma, notes the University of Michigan Health System. Certain herbal supplements could help reduce wheezing as well. These include coleus, boswellia, tylophora, butterbur, picrorhiza, holy basil, ivy leaf, Amrita bindu, hyssop, marshmallow, mullein, licorice, lobelia, onion, ginkgo and elecampane. Don't take any herbal or nutritional supplements without first talking with your doctor about the potential drug interactions and health dangers, however.