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.
The nicotine found in cigarettes and other tobacco products can cause muscle twitching, especially in the legs. Muscle spasms can occur in the eyelid or the area around the eye when the eyelid or the surface of the eye is irritated. Adverse reactions to certain drugs, including corticosteroids and estrogen pills, can trigger muscle spasms. The twitching may affect the hands, arms, or legs.