Home > Respiratory System > Respiratory System of the Head and Neck > Larynx. The larynx is a tough, flexible segment of the respiratory tract connecting the pharynx to the trachea in the neck. It plays a vital role in the respiratory tract by allowing air to pass through it while keeping food and drink from blocking the airway.
Common side effects from nicotine gum include bleeding gums, too much saliva, hiccups, indigestion, slight swelling of the mouth, injury to teeth or cheeks, nausea, upset stomach and sore throat. Less common or rare side effects may include diarrhea, dry mouth, swollen gums, sores in the tongue/throat/mouth, muscle pain, rashes and sweating.
Some people suffer from apthous ulcers, commonly known as fever blisters or canker sores, inside the mouth. There is a possibility that recurrent canker sores may be due to an allergic reaction to Sodium Lauryl Sulfate (SLS). You can find brands of toothpaste made without SLS. So, if you suffer from painful recurring canker sores, it may be worthwhile to invest in toothpaste products that do not contain it.