I'll repeat the reference to sucrose as one measure for pain relief:
Herschel, Khoshnood, et al. Neonatal Circumcision: Randomized trial of a
 sucrose pacifier for pain control. Arch Pediatr Adolesc Med. 1998;152:279-284

We employed a bottle nipple, not a "pacifier" that one would buy in a
store. It was used only during circumcision, though I believe some have
used this method of analgesia for premies getting heel pricks.
Peggy Herschel, MD
University of Chicago

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