Oregano can be used to help loosen up any mucous and phlegm in the sinuses. Oregano can be used to help protect against viral and bacterial infections. It can also help promote healthy digestion and also can be used as a purifying agent. when ingested, oregano can eliminate intestinal worms. when it is applied topically it can keep away lice, bed bugs, mosquitoes, and fleas, it can also be found in most organic bug sprays and repellents. It can also be used to help delay the on sight of menopause which can help reduce mood swings and stabilize ones mind. If pregnant oregano should be avoided due to its regulations of hormones it could cause miscarriage. If allergic to the following; basil, lavender, marjoram, mint, or sage are also commonly allergic to oregano and its essential oil.