anacathartic

from The Century Dictionary.

• In medicine, throwing upward; cleansing by exciting discharges from the mouth or nose, as vomiting, expectoration, etc.
• noun One of a class of medicines which excite discharges by the mouth or nose, as expectorants, emetics, sternutatories, and masticatories.

from the GNU version of the Collaborative International Dictionary of English.

• adjective (Med.) Producing vomiting or expectoration.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun An expectorant or emetic medicine.