Potions are liquids and powders with magical properties. A potion consists of eight parts: a liquid base, five ingredients to engage five physical senses, one to engage the mind, and one to engage the spirit. These ingredients are different for each potion and for each person who makes them. The potion must also be infused with the wizard's will.
Potions were used only early in the series, and fell out of use as the main characters gained proficiency in other areas of magic. Harry has stated that he is teaching his apprentice, Molly Carpenter how to brew potions.
In Storm Front, Harry brews an escape potion consisting of Jolt cola (base), motor oil (scent), pieces of feather (touch), chocolate-covered espresso beans (taste), a shadow (sight), mouse scampers (sound), a shredded bus ticket (mind), and a broken chain link (spirit). He also brews a love/lust potion from tequila (base), perfume (scent), shredded lace (touch), dark chocolate (taste), candlelight (sight), a sigh (sound), a shreded fifty-dollar bill (mind), and ashes from a romance novel (spirit). 
Other potions used include:
- Sight potion (Three-Eye) (Storm Front)
- Camouflage potion (Fool Moon)
- Pick-me-up potion (Fool Moon)
- Anti-venom against Red Court Vampires (Death Masks)
- semi-flight potion (Changes)
Rashid's unguent (and Harry's variation of it) may also be considered potions, although these are applied topically rather than consumed.