Local injectable anesthetics cause loss of feeling in the skin or other tissue and are injected at the site which is to be anesthetized.
 
 
Recommended Resources
Provides information about local, conductive, or infiltrative anesthetic used in dentistry. Articadent is a combination of articaine and epinephrine.
http://www.dentsplypharma.com/products_artica.asp
The website of the manufacturer of this pre-filled anesthetic patch offers details about LidoSite, safety information, and additional references.
http://www.vyteris.com/Our_Products/Lidosite.php
This brand of lidocaine is explored in this article, including uses, how it's applied, and drug interactions.
http://www.medicinenet.com/lidocaine-injection_local/article.htm
Used in dental procedures and childbirth, this medication is injected in order to cause loss of feeling in the skin and surrounding tissues. This Brigham and Women's Hospital article presents information about the agent, contraindications, and side effects.
http://healthlibrary.brighamandwomens.org/library/drugreference/26,374