Alchemy — Tag Meaning
The science-magic of transmutation — equivalent exchange, philosopher's stones, and knowledge bought at terrible prices, with Fullmetal Alchemist as the tag's gravitational center. Alchemy fic is defined by its law: nothing gained without something of equal value lost.
What to Expect From "Alchemy" Fics
Expect transmutation circles, hubris punished, and the genre's foundational warning about playing god.
How to find Alchemy fics on AO3
On AO3, click any tag to see every work that uses it, then refine with the "Filters" sidebar — combine it with your fandom or ship, set a rating, or exclude tags you don't want. See our AO3 filtering guide for the full walkthrough.
Browse "Alchemy" works on AO3Popular Fics Tagged "Alchemy"
Real examples from AO3's most-kudosed works:
Azoth
by zeitgeistic
Questions
by Elfpen
Nepeta's Big Beautiful Strip Poker Game
by ClawLyfe
How to Steal a Homunculus
by DarkPuffin
Laws of Magical Conservation
by Anonymous
Shaping Carbon
by chromieclipse (Plasmeic_Aether)
Related Tags
Parental Roy Mustang
The Fullmetal Alchemist fandom's cherished dynamic where Colonel Mustang's needling supervision of Edward Elric is read as fierce paternal care. Fics with this tag make the subtext text: Roy worrying, defending, and quietly parenting the teenage alchemist the military put in his command.
Tag guide →
Potions
Brewed magic in bottles: healing draughts, poisons, love potions, and the simmering cauldron-craft behind them. In Harry Potter fic the tag carries Snape's classroom with it; elsewhere it powers apothecary AUs and accidental-dosing plots.
Tag guide →
Magic
The broadest arcane tag on the Archive, covering any story where magic features meaningfully — canon magic explored more deeply, new magic introduced, or magic as the texture of an AU. Authors often pair it with specifics, but on its own it signals that the impossible is load-bearing somewhere in the fic.
Tag guide →
Alternate Universe - Science Fiction
The broad-spectrum SF relocation: cloning facilities, terraforming colonies, AI uprisings, biopunk experiments — anything where speculative technology defines the world. Authors use it when their premise is unmistakably science fiction but doesn't slot neatly into space, cyberpunk, or robot subtags.
Tag guide →
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