Influenza is a respiratory disease caused by virus infection, it has the characteristics of strong infectious, rapid transmission, a wide range of susceptible populations. Every season, the flu spread easily among the crowd, especially for the elderly and children. So, among the many kinds of natural plant extracts, which one can help us prevent the flu? 1.Honeysuckle Honeysuckle (scientific name: Lonicera japonica). "Honeysuckle" one from the "Compendium of Materia Medica", since honeysuckle flower was first opened in white, then turned yellow, so named honeysuckle. Honeysuckle has long been known as a detoxification medicine. It is sweet and cold aroma, cold heat but not hurt the stomach, fragrant and also for get rid of evil . Honeysuckle can not only disperse wind heat, but also resolving poison, for a variety of febrile diseases, such as body heat, rash, hair spots, heat poison sore and sore throat embolism, it is proved to be effective. 2.Tea polyphenols Tea polyphenols is a general term for polyphenols in tea, including flavanols, anthocyanins, flavonoids, flavanols and phenols. Mainly for flavanols (catechins) category, catechins accounted for 60 to 80%. Tea polyphenols have a strong antioxidant effect, especially ester type catechin EGCG, the reduction of up to 100 times L-ascorbic acid. Among the four main catechins, the antioxidant capacity was EGCG> EGC> ECG> EC> BHA, and the antioxidant activity increased with increasing temperature. In addition to anti-oxidation of tea polyphenols, but also has antibacterial effects, such as Staphylococcus aureus, Escherichia coli, Bacillus subtilis and other inhibitory effect. 3.Hypericum perforatum Hypericum perforatum (Hypericum perforatum L.), also known as Melaleuca, Hypericum, often use the whole plant to medicine. Hypericum perforatum test bitter, it can be used for heat detoxification and regulating menstruation. Hypericum perforatum extract can be used as a safe neurotrophic products, prevention and treatment of depression regulation of affective disorders and mood disorders, elimination of tension and depression, restore self-confidence and also for improving sleep, Hypericum perforatum extract`active ingredient hypericin has significant anti-DNA , RNA virus,so it can act directly on the virus such as bird flu, swine fever and foot-and-mouth disease virus, DAN, interfere with the virus replication, reproduction and strong inhibitory effect on the virus. 4.Astragalus Astragalus, often known as Beiqi or North Achilles, also for Astragalus or tragacanth, commonly used in traditional Chinese medicine for the leguminous plant Mongolia Astragalus membranaceus or Astragalus root. Astragalus extract can enhance immunity, enhance energy, anti-fatigue, anti-mutation, protect the liver and inhibit osteoclasts. Astragalus polysaccharides can lower hypolipidemic, also for lower cholesterol and triglycerides, increase the role of high-density lipoprotein; can prevent and treat cardiovascular and cerebrovascular diseases such as atherosclerosis, coronary artery disease, peripheral vascular disease and hyperlipidemia . Astragaloside has a significant role in lowering blood glucose, glycosylated hemoglobin and urinary protein, reducing AGEs in renal cortex and serum, inhibiting aldose reductase, inhibiting mesangial cell proliferation and alleviating renal hypertrophy. Astragaloside can added into the appropriate accessories,also can be made into oral preparations for the prevention and treatment of diabetic nephropathy. since ancient times, Chinese medical use those kinds of Chinese herbals to prevent influenza and fruitful. Modern medicine has also placed many researches on this, in general, the plant components of flavonoids, polyphenols, polysaccharides, alkaloids have a more direct effect on influenza virus. Our company is professional to provide a variety of natural plant functional ingredients and pigment products, you can check our official website for more information.