1. Tripathi KD. Essentials of medical pharmacology. 6th ed. New Delhi: Jaypee Brothers; 2010.
2. Brunton LL, Chabner BA, Knollman BC. Goodman and Gilman’s the pharmacological basis of therapeutics. 12th ed. New Delhi: McGraw-Hill; 2011.
3. Rabin JM, Spitzer M, Dwyer AT, Kaiser IH. Topical anesthesia for gynaecological procedures. Obstet Gynecol. 1989;73:1040–4.
4. Lipscomb GH, McCord ML, Bain KW, Ling FW. The effect of topical 20% benzocaine on pain during loop electrosurgical excision of the cervix. AJOG. 1995;173(3 Pt 1):772–4.
5. Church L, Oliver L, Dobie S, Madigan D, Ellsworth A. Analgesia for colposcopy: double-masked, randomized comparison of Ibuprofen and benzocaine gel. Obstet Gynecol. 2001;97:5–10.