That wouldn't work with the context of the game. The tone the game's going for is more or less "science realism" rather than "magical realism." It's not a potion; it's a serum that facilitates cross-species insemination, and not to spoil, but what happens to it kind of precludes it from being used as a consumable. What I mean by the distinction between the two forms of realism is that it's not like Coffee Buns, where you can handwave the character randomly rearranging/adding mass as "it just works like that," because what's been presented by THRUST so far in tone has been grounded (somewhat) in reality. It wouldn't fit thematically either, since the whole point of the experiment in the first place is so humans and anthrosapients can crossbreed at a more consistent rate rather than the rarity it is in the setting currently. The MC just magically transforming into an anthrosapient wouldn't fit that theme at all.