Ki Allergy & Hayfever Control Formula contains a combination of herbs for ongoing immune strengthening and symptom relief from allergies and hayfever. For best results, it is recommended to start Ki Allergy & Hayfever Control Formula 7 weeks before allergen exposure to ensure best results to strengthen the immune function and assist in building resistance to the attack of allergens. Astagralus membrancaceus root (including Rhina-mp®): Strengthens the immune system, delivers relief for allergy & hayfever symptoms Zingiber officinale fresh rhizome (Ginger) Traditionally used in Chinese medicine to help clear nasal passages and relieve chesty coughs. Magnolia liliflora flower Traditionally used to relief hayfever, headaches and watery nasal discharge Quercetin A natural plant flavonoid, showed in several studies to inhibit histamine production when immune cells are under attack from allergens * Saxena R.C., et al. (2010). A randomized double blind placebo controlled clinical evaluation of extract of Andrographis paniculata (KalmCold™) in patients with uncomplicated upper respiratory tract infection. Phytomedicine, 17, 178-185. Natural Remedies Pvt Ltd, the manufacturer of KalmCold™, was a financial sponsor of this trial .