Serums are the liquids used to induce illusions known as simulations. They are either taken orally or injected into the body through a syringe. They are clearish liquids that occasionally have a slight tint to them. The Divergent are not always fully affected by the serums; they can manipulate or even resist serums, and they remain aware that they are in a simulation. Serums can be injected individually or airborne. Every faction has a serum for their own uses.


Types
- Fear Serum - Dauntless (Fear)
- Truth Serum - Candor (Truth)
- Peace Serum - Amity (Peace)
- Death serum - Erudite (Death)
- Memory Serum - Abnegation (Memory loss/amnesia)
- Paralytic serum - Paralytic (movement)
- Attack Serum - Attack on Abnegation (Free will)
- Aptitude Test serum - Aptitude Test (telling candidates which faction they have Aptitude for)
- Terror Serum - (Non diluted, early version of the Fear Serum)
Many more are unnamed.
Trivia
- Eventually Tris Prior refuses to let anyone inject her with a serum but herself because she cannot trust anyone.
- Most Serums were either developed by Jeanine Matthews or improved by her.
- Peace Serum is the only serum Tris wasn’t able to resist or manipulate.