Randomized Controlled Trial
1% lidocaine versus 0.5% diphenhydramine for local anesthesia in minor laceration repair.
Ann Emerg Med. 1994 Jun 1;23(6):1328-32.
Randomized Controlled Trial
Comparison of effects of lidocaine hydrochloride, buffered lidocaine, diphenhydramine, and normal saline after intradermal injection.
J Clin Anesth. 2002 Aug 1;14(5):339-43.
Randomized Controlled Trial
Needle-free powder lidocaine delivery system provides rapid effective analgesia for venipuncture or cannulation pain in children: randomized, double-blind Comparison of Venipuncture and Venous Cannulation Pain After Fast-Onset...
Pediatrics. 2008 May 1;121(5):979-87.