* Hesperetin/[[Hesperidin]] for Hay Fever : Hesperetin and hesperidin are almost identical except that the latter is bound to a sugar molecule. Research shows that these potent phytonutrients have antioxidant, anti-inflammatory, anticarcinogenic, and cholesterol-lowering actions, and also protect blood vessels against damage. These are just some of the therapeutic side-effects of hesperidin. Hesperidin is also beneficial for allergies and hay fever because of its antihistamine properties. Green vegetables are a source of hesperidin / hesperetin. You can also find them in their highest concentration in citrus fruits like lemons and oranges, especially the white part, or pith. Of course, avoid citrus fruits if you suspect that you are sensitive to them.
*[[Quercetin]] is a bioflavonoid, a phytochemical found in plant foods such as apples, onions, berries, grapes, teas, and red wine that supports the immune system and acts as a natural antihistamine. A normal healthy diet will provide about 25-50 milligrams of quercetin; if you choose to supplement this, be sure to follow the dosage instructions on the bottle.
* [[Amylase]] Possesses antihistamine properties amylase can relieve many kinds of skin problems, such as hives and rashes, contact dermatitis, and allergic reactions to bee stings, bug bites, and poison oak or ivy.
* [[Black Seed Oil]] : A paper published from Institute for Transfusion Medicine, Charité University Hospital, Berlin, Germany examined the results of four studies on the clinical efficacy of Nigella sativa in allergic diseases including in these studies, a total of 152 patients with allergic diseases (allergic rhinitis, bronchial asthma, atopic eczema) were treated with Nigella sativa oil.
* Carotenoids : In a 2006 study from Public Health Nutrition, scientists found that allergies are less common among people with a high intake of carotenoids (a class of antioxidants that includes beta-carotene, lutein and lycopene).