Decongestant

A decongestant is any of a group of medications used primarily in the treatment of hay fever, vasomotor rhinitis, and intrinsic rhinitis. It can cause elevation in blood pressure and nervousness.

Sources:
Allergy Be Gone	American College of Allergy, Asthma & Immunology	Auckland Allergy Clinic
Eallergy.net	American College of Allergy, Asthma & Immunology	bbc.co.uk Health

Books on Allergies

Black Cumin: The Magical Egyptian Herb for Allergies, Asthma, Skin Conditions, and Immune Disorders

Editorial Review
This book will serve as an invaluable resource for anyone interested in the healing properties of this incredible plant. It contains everything you need to know in order to use black cumin for the prevention and treatment of illness, including specific recipes for infections and allergies, and precise directions for their preparation. The authors even provide a section on the use of black cumin as a beauty aid and as a culinary staple.

Reader's Review - brief yet useful and extremely informative
Known for healing every disease (except death), cumin is as important as a spice in recipes and as a medicine for colds and other such conditions. This book also shows the effectiveness of black cumin in treatments for asthma, allergies and acne. The authors provide fascinating information on this plant, including its important use in Ancient Egyptian times. Recipes are included for the knowledgeable or curious cook. Well illustrated, this book is recommended mostly for health and food aficionados.