On medical use,Tetrahydrobiopterin can be used at phenylketonuria(PKU), the PKU has three kinds, one is BH4 Deficiency. And this product is used at BH4 Deficiency
Package
1g/bottle, 125g/bottle, 500g/bottle, 1KG/bag or according to the customers' demand
Storage
Stored in the dry and ventilated inside storeroom, prevent direct sunlight, slightly pile and put down