Mouth ulcers are sores or lesions that often appear on the inside of the cheeks, lips or on the floor of the mouth. They are uncomfortable, sometimes painful but harmless. Mouth ulcers can be caused due to a number of reasons like constipation, hormonal changes, acidity and deficiencies of vitamin B or C, iron and other nutrients. Interestingly, it has been found that women (more than men), adolescents, and those with a family history of mouth ulcers are at higher risk of developing mouth ulcers. The good news is that they are easily treatable. Stock your home with these natural home remedies for mouth ulcers.