It is a strange organic concoction that could possibly reverse the Mutation Factor in humans”
The mutagenic serum does not work as intended; it will kill any mutant to whom it is injected, with the exception of Frank Horrigan.
- Be aware that using serum in a duel with Lenny is buggy; it appears that once combat damage is done to Lenny, the serum will work and the fight will end, but if used at the beginning of battle, the game gets frozen permanently in combat mode.
- If the serum is used on a super mutant in combat mode, you get the 1000 XP and complete the quest but the mutant will take one or a few turns before dying. If you kill it before then and loot the corpse the mutagenic serum may still be there.
- The serum does not work on Frank Horrigan.