Were you looking for information on Cromolyn? Chromelin is a common misspelling of cromolyn.
Cromolyn is a drug licensed to treat asthma and allergies. It belongs to a group of drugs called mast cell stabilizers. In response to allergens (substances that cause allergic reactions) and certain conditions, mast cells in the body release chemicals that cause allergic reactions. By stabilizing the mast cells, cromolyn prevents the mast cells from releasing the chemicals, which prevents allergic reactions.
(To read more about this drug, including factors that affect your dosage, click Cromolyn.)