Herba GRA is a kind of natural herbal health care food. It is indicated for sexual hypofunction, such as men's impotence, premature ejaculation and women's sexual rigidity. It can also resist fatigue, anti-senility, and enhance immunity, suitable for both patients and the healthy. Most important, it is not based on enhancing sexual desire but supplementing essence and strengthening the regulating function of nervous system and endocrine system. 3 tablets of a dose, oral administration one hour before sex. Main ingredients: Cnidium Monnieri, Epimedium Macranthum, Rhizoma Dioscoreae Oppositae, Astragalus Complanatum, Poria Cocos, Rehmanniae Glutnosa, Radix Salviae Miltorrhizae. Pharmacological Action: 1. Herba Gra can improve the functions of sex organs and increase the excitablity of penis to external sitmulation. It also has a good effect on anti-fatigue and enhancement of sexual function. 2. It can resist the decrease of HC50 value caused by cyclophosphamide and remarkably increase the normal and hydrocortisone-injected mice. It is proved that it can enhance the immunologic function. More information: 1. How fast it works: about 60 minutes. 2. For how long: Clinical test proved the overall effective rate was 95.5%. Usually it keeps effective for 16 hours. I'd like to emphasize that it can also resist fatigue, anti-senility, and enhance immunity, suitable for both patients and the healthy people. 3.Side effects:No side effects.