Biotropin is the newest HGH, produced in Hong-Kong China since 2010. LifeTech Labs are innovative suppliers because they offer 3 different packages adapted to the different needs of users. For more convenience and to prevent the possible degradation of the product, this HGH of 191 amino acids de high purity is provided lyophilized in an anticipated pack for 1 months. Indeed, this way you have a bottle that passes only from 2 to 3 days in the refrigerator, according to their concept “1 vial = 3 days”