Vitamin C has been shown to decrease blood histamine levels
Vitamin C also raises glutathione levels by 50%.5,6Increasing this potent antioxidant may help reduce nasal obstruction, rhinorrhea and ear fullness.7
EMIQ (enzymatically modified isoquercitrin) has been shown to reduce ocular allergic symptoms in those with pollinosis8
EMIQ is prepared by using a natural enzyme process that attaches polysaccharides to convert quercetin into a soluble form. According to pharmacokinetic data, the absorption of EMIQ is up to 40 times greater (Cmax) and 15 times greater (AUC) than quercetin.
The patented bioflavonoid pycnogenol, when given 5 weeks before birch allergy season, reduced eye and nasal symptoms by 35% and 19.5% respectively9
Stinging nettle leaf has been shown in vitro to inhibit the pro-inflammatory pathways related to allergic rhinitis.10Urtica is a potent 4:1 extract.