What is the best natural medicine for strong seasonal allergies?

Something that is natural and works really really well.. Thanks a lot guys!!

Related Videos :

Allergy
Allergies are abnormal immune responses to allergens like pollen grains, dust, moulds and foodstuffs. The allergens can enter the body through inhalation, ingestion, injection, or external skin contact. Allergens cause abnormal production of immunoglobulin E (IgE), an antibody already present [...]