Rubber or plastic device to protect the nipples of nursing women, especially cracked or sore nipples, and to allow them to heal.
Gas normally produced in the body and present in expired air; in blood vessels, it plays a major role in vasodilation. Administration of the drug nitroglycerine increases the nitric oxide level; this leads to dilation of the coronary arteries and increased blood flow to the heart. Certain anti-impotence drugs (e.g., Viagra) exert their effect via a similar mechanism. Recent research suggests that increased levels of exhaled nitric oxide may be an early sign of bronchospasm in asthma.
A cover to protect the sore nipples of a nursing woman.