How to activate metal gear 5 parasite suit?

Three kinds of drugs are needed. According to the query of metal gear 5 game official website, it is necessary to develop three kinds of drugs to activate the parasite suit in order to send out the special effects of the parasite suit, namely, Fog (saving Miller and Hanibi from catching skeletons), Invisibility (the coders who catch female skeleton snipers at the beginning of the task of saving the old man) and Hardening (the old man catches armored skeletons after the plane crash). These three potions can be developed later, and parasites can be activated by using these three potions. Metal gear Metal gear V, the preface of the fifth generation of metal gear series, was developed by Kojima Studio based on the FOX engine, and will be launched on PS3, PS4, Xbox360 and XboxOne on March 20th. At the same time, the official announcement of the game app will be linked with the home platform.