What’s in it?

MSM
Msm is a nutritional mineral that can help block the receptivity of histamine in sensitive tissues, such as nasal mucous membranes.  This block like action prevents histamine  from creating inflammation, swelling and fluid build-up.

Vitamin C
Vitamin is a natural antihistamine. It prevents histamine release and increases the detoxification of histamine.
Folate and folic acid are forms of a water-soluble B vitamin. A new study suggests vitamin B9, also known as folate, may help improve your immune system's ability to stand up to common allergens.

Magnesium
Magnesium is a trace mineral that reduces histamine release and inflammation of the airways and lungs by stabilizing mast cells and T- lymphocytes. 

Zinc
Zinc is an essential mineral that is involved in numerous aspects of cellular metabolism and it plays a role in immune function protein synthesis. 

Niacin
Niacin is a type of B vitamin that assists in the functioning of the digestive system, skin, and nerves.

Daily Values
DVs are reference numbers developed by the Food and Drug Administration (FDA) to help consumers
determine if a food contains a lot or a little of a specific nutrient.

Sources:
http://ods.od.nih.gov Office of dietary supplements. National Institutes of Health
Susan Millar - http://www.dramatic-asthma-relief.com