Here I am going to outline some baneful ingredients and what they are used for, I will also mention if they are poisonous or toxic.

Please note that there are some items which if you use them incorrectly or in specific ways you will cause harm to yourself or others and this can mean potential criminal charges and jail time. Not all witchcraft and conjure is benign.
Ingredient | Poison/Toxic | Uses |
Cayenne Pepper | IRRITANT | To speed up work, to heat up, not to be used in banishing or binding works. |
Black Pepper | Can be used in cursing, commanding, great for gossip and envy work. | |
Black Mustard Seeds | Confusion. Causes misunderstanding and miscommunication. | |
Poppy Seeds | Confusion. War magic | |
Wolfsbane | POISON | Shapeshifting and animal introspection. |
Foxglove | POISON | Fae magic, underworld/otherworld. |
Hemlock | POISON | Used to destroy sex drive, break up couples. |
Belladonna | POISON | Opens gateways, war magic, protection and death. |
Yew | POISON | Transformation and death work, banishing, necromancy. |
Hellebore | POISON | Banishing and necromancy. |
Vinegar | Replacement for urine, sour jars. | |
Sulphur | TOXIC if burned. | Used in hexes and curses, goofer dust and hotfoot powder. |
Ammonia | Replacement for urine. | |
Saltpetre/Nitre | Highly Combustible. | Cursing and crossing. Makes work “explosive” |