- "Through alchemy, one uses the Force to effect change on the physical."
- ―Sorzus Syn
Force alchemy, better known as Sith alchemy, was a science that referred to a number of areas under the Sith. It encompassed any power or technique which used the Dark side of the Force to permanently alter an item or living being. It is rejected by the Jedi as an act of treason against the Force's will.
- "But ask me the secrets of Sith alchemy, and I would ask you for three measures of blood: one from a person you love, one from a person you hate, and one from yourself."
- ―Naga Sadow
While the Sith species practiced Sith alchemy long before the Exiles arrived on Korriban, it was the Exiles who perfected it, one of their best being Sorzus Syn, using the knowledge to create the Leviathans that they acquired during the Hundred-Year Darkness.
Sith alchemy was primarily used to enhance the strength of weapons and armor (such as the famous Sith swords), or to genetically engineer and enhance alien species, making them more dangerous and easier to control by the Sith Lords. More sinisterly, Sith alchemy was capable of waking the dead in servitude to the Sith. Korriban zombies, and possibly Sith undead, were creations of this branch of the art. They are also known, in the Sith language, as the Isaiwinokka Hoyakut - the reanimated dead.
One of the many applications of Sith Alchemy was the art of creating nefarious toxins, such as Sith poison.
Naga Sadow wrote many texts concerning the art of Sith alchemy. These were studied by Seviss Vaa, whose experiments were responsible for the Behemoth from the World Below. Certain xenobiologists suspected that the predators of Yavin 8 and the native Melodies may have been products of Sith alchemy.
While he was on Yavin 4, the Sith Lord Exar Kun used alchemy to create terrifying creatures twisted by the dark side's influence. Around this time, the Sorcerer of Tund Karnak Tetsu practiced Sith alchemy.
Darth Plagueis was a master of this dark art. Plagueis' apprentice, Darth Sidious, later wrote a book about Sith alchemy entitled The Creation of Monsters, and was responsible for the creation of such monstrosities as Shadow Droids and chrysalis beasts. He claimed that Darth Vader was partially an alchemical creation. Darth Sidious may have also utilized the mask ability to hide his true, corrupted features.
The Prophet of the Dark Side Cronal was referred to as Sidious' "monster-maker", and was responsible for the creation of such sithspawn as Gorc and Pic through the dark art of Sith Alchemy. Cronal also created a specialized helmet that, when used, would amplify his dark side powers to an astounding degree, as well as allowing him to draw on the force abilities of other force-sensitives called the Pawns.
During the time of the Galactic Civil War, the Sith spirit Valik Kodank taught the Dark Jedi Thaum Rystra how to utilize Sith alchemy. Rystra used his knowledge of the subject to carry out investigations inside the Room of Change in the Temple of Pain, and he experimented on the pirates Blaschowwa, Kamtis Bonai, Vobin Sobos and Desvin Tor'thal.
The One Sith featured Sith Alchemy heavily in their plans. Darth Maladi used Sith Alchemy in combination with Vong Shaping to create the Vongspawn virus and set off the Sith–Imperial War. In the Second Imperial Civil War Vul Isen used Sith Alchemy, aided by knowledge provided by Darth Wyyrlok, to create an aquatic form of Leviathan to hunt down the people of Dac.
Many creatures altered by Sith alchemy were able to see in complete darkness, although they could not distinguish colors.
- Dawn of the Jedi: Into the Void
- Tales of the Jedi: Dark Lords of the Sith 3: Descent to the Dark Side (Mentioned only)
- Tales of the Jedi: Dark Lords of the Sith 4: Death of a Dark Jedi
- Tales of the Jedi: Dark Lords of the Sith 5: Sith Secrets
- Star Wars: The Old Republic (Mentioned only)
- Star Wars: The Old Republic: Rise of the Hutt Cartel
- Star Wars: The Old Republic: Shadow of Revan (Mentioned only)
- Star Wars: The Old Republic: Knights of the Fallen Empire
- Knight Errant (Mentioned only)
- Darth Bane: Path of Destruction (Mentioned only)
- Darkness Shared (Mentioned only)
- Darth Bane: Rule of Two
- Darth Plagueis (Mentioned only)
- Jedi Quest: The Final Showdown
- Star Wars: The Clone Wars – "Sacrifice"
- Shadows in the Force
- (Indirect mention only)
- Luke Skywalker and the Shadows of Mindor (Mentioned only)
- Light and Dark (Mentioned only)
- Crosscurrent (Mentioned only)
- Fate of the Jedi: Ascension (Mentioned only)
- Legacy 30: Vector, Part 11 (Mentioned only)
- Dark Empire endnotes (First mentioned)
- Dark Empire Sourcebook
- "Straight from the Horse's Mouth: A Guide to the Star Wars: Tales of the Jedi Universe, Part 3"—Star Wars Insider 28
- The Jedi Academy Sourcebook
- Star Wars Gamer 4
- The Sith Compendium"—Star Wars Gamer 5 "
- The New Essential Chronology
- "Heritage of the Sith"—Star Wars Insider 88
- Jedi vs. Sith: The Essential Guide to the Force
- Knights of the Old Republic Campaign Guide
- The Force Unleashed Campaign Guide
- Jedi Academy Training Manual
- Star Wars Galaxies Trading Card Game – The Shadow Syndicate (Card: Sith Alchemy)
- The Unknown Regions
- Star Wars: The Old Republic Explorer's Guide
- Book of Sith: Secrets from the Dark Side
- Star Wars: The Old Republic Encyclopedia
- "Authors of the Expanded Universe: Tales of the Sith"—Star Wars Insider 153
- Strongholds of Resistance