AMBROSIA ARTEMISIIFOLIA

INDICATIONS Studies have shown that properly performed an interpreted skin tests with ragweed pollen extract are useful in the diagnosis of allergy to ragweed pollen 7

21 . Immunotherapy with the appropriate dosage of short ragweed pollen extract is effective in reducing symptoms of hay fever and asthma resulting from exposure to short ragweed pollen (9

11)

and it is believed to be effective with extract of giant ragweed

although carefully controlled studies are unavailable. However

clinical observations and known cross reactivity between short and giant ragweed pollens have led to the practice of using a mixture of the two species for skin testing and treatment 22