Our company has focused on 5-HTP and dietary supplement for many years.Up to now,we has grown into the largest 5-HTP manufacturer in China.So the price and quality of the products are very advantageous. We can provide 5-HTP with various contents(10%-99%) and properties (powder, granule).In addition, our company has warehouses in the U.S,stock available, we also have Kosher,Halal,ISO,Vegan Certificate and so on. If you are interested our 5-HTP,we can send some samples for free, and then we can exchange more details.