Aim: To study the analgesic effect of oral 25% glucose as compared with oral 24% sucrose during heel lance in preterm neonates. Methods: Stable preterm neonates within first 48 hours of life were randomized to receive either 24% sucrose or 25% glucose before heel lance. Primary outcome assessed was painful response by the Premature Infant Pain Profile (PIPP) score at 30 seconds after heel lance, and the secondary outcome was immediate adverse events associated with the administration of two solutions and duration of crying immediately following the procedure. Results: A total of 94 neonates were randomly assigned into 24% sucrose and 25% glucose group. The baseline characteristics between the two groups were comparable. No significant difference was observed between the two study groups with respect to PIPP scores, duration of crying and rate of adverse events. Conclusions: When assessed by PIPP score, 25% glucose and 24% sucrose provided comparable analgesia during heel lance in preterm neonates.