Studies, such as one conducted at Penn State College of Medicine, have found that honey can work more efficiently to calm a cough than over-the-counter drugs. It is a rich demulcent, with a high viscosity and stickiness that does an incredible job of coating and soothing those irritated mucous membranes. Thanks to an enzyme added by bees when they harvest honey, it also has antibacterial properties as well, which may help shorten how long you have the cough if it is due to bacterial illness.

Fortified milk is a great source of Lactobacillus. You should be cautious, however, as dairy may make phlegm thicker. You can also purchase probiotic supplements at most health food stores and drug stores. Each supplement manufacturer may have different daily recommended intakes. Probiotics are also added to some yogurt types and are present in miso soup and sourdough breads.
Origanum vulgare Oregano Used as an abortifacient in folk medicine in some parts of Bolivia and other northwestern South American countries, though no evidence of efficacy exists in Western medicine. Hippocrates used oregano as an antiseptic, as well as a cure for stomach and respiratory ailments. A Cretan oregano (O. dictamnus) is still used today in Greece as a palliative for sore throat. Evidence of efficacy in this matter is lacking.
^ Valduga, Eunice; de Freitas, Renato João Sossela; Reissmann, Carlos B.; Nakashima, Tomoe (1997). "Caracterização química da folha de Ilex paraguariensis St. Hil. (erva-mate) e de outras espécies utilizadas na adulteração do mate". Boletim do Centro de Pesquisa de Processamento de Alimentos (in Portuguese). 15 (1): 25–36. doi:10.5380/cep.v15i1.14033. Archived from the original on 2014-08-26. 

​Peppermint is a very well known herb today because of the amazing aroma it has when the leaves are bruised. It's used in so many different ways both culinary and medicinal it's hard to not include peppermint in our list of herbs. Peppermint originally came from England some time in the late seventeenth century and is actually a hybrid that comes from the water mint and spearmint. Peppermint was also extensively used in Ancient Egypt where they used it for indigestion, dried peppermint leaves have even been found inside of the pyramids that the Egyptians had built. During the eighteenth century peppermint became popular in Western Europe for treating things like nausea, morning sickness, and respiratory infections.
Low activity by the immune system: This claim asserts that if only the body's immune system were strong enough, it would kill the "invading" or "foreign" cancer. Unfortunately, most cancer cells retain normal cell characteristics, making them appear to the immune system to be a normal part of the body. Cancerous tumors also actively induce immune tolerance, which prevents the immune system from attacking them.[40]
A popular spice used in Indian cooking, and the main ingredient of ‘curry’ that has taken the world by storm, turmeric has antibacterial, anti-inflammatory and antioxidant properties that all come together to help diabetics manage more stable blood sugar levels. It helps boost immunity and prevent infections that diabetics are often vulnerable to. Studies conducted on rats prove that curcumin, the active ingredient in turmeric, is effective in reducing plasma glucose level and HbA1C as well as improving the lipid profile. Many diabetics also suffer from arthritis, since the sugar laden blood and inflammatory processes typical to diabetes often damage joints. Turmeric, with its anti-inflammatory abilities, also helps with these joint pains.
If you want to dramatically improve all aspect of your health, herbs and herbal supplements can help. Herbs are a natural means of preventing and curing many types of ailments and diseases. About 25% of prescription medicine has at least one herbal component in it. These are most often potent herbal extracts. An example would be aspirin, that was first created from white willow bark.
One of the best and well known ways to get the benefits of turmeric is to just simply eat it. Maybe not plain but adding it to dishes is a great way. Don't be fooled into thinking that eating turmeric in food is the only way to reap the benefits of this amazing herb. You can use it in teas too, or as a toothpaste you can on occasions dip your tooth brush into some turmeric powder brush it onto your teeth and allow it to sit for about 3 minutes. It won't stain your teeth but the same can't be said for your toothbrush or sink. You can also make a turmeric paste by mixing some of powdered turmeric with a little water and use it topically.