What are the antonyms for poultice?

There isn't a direct antonym for "poultice" in the sense of a traditional medical remedy. However, depending on the context, you could consider these alternatives:

If "poultice" refers to the application of a soothing substance:

* Exacerbation: To make a condition worse, the opposite of soothing.

* Stimulation: To provoke a reaction, rather than calm or soothe.

* Excision: To remove tissue, the opposite of applying something.

* Surgery: A more invasive medical procedure that contrasts with the simple application of a poultice.

If "poultice" refers to the substance itself:

* Antiseptic: A substance that kills germs, while a poultice may not have that property.

* Anti-inflammatory: A medication that reduces swelling, while some poultices might not.

* Medication: A more general term for a substance used for medical treatment.

Ultimately, the best antonym depends on the specific context and what aspect of "poultice" you want to contrast.