Infants in the NICU receive an average of 4 - 5 painful procedures daily for diagnostic and therapeutic purposes; less than half receive interventions to manage pain. Both immediate and long term effects of unmanaged pain in these vulnerable infants have been reported, including impaired brain development. To ensure optimal outcomes for hospitalized infants in NICUs, there is a crucial need to minimize procedural pain and its associated consequences. Multiple clinical trials have identified sucrose as an effective strategy for reducing procedural pain in infants. Despite its inclusion in neonatal pain guidelines, standards, and consensus statements sucrose has been inconsistently used. The under-utilization of sucrose may be explained by knowledge gaps in relation to the minimally effective dose and the influence of concurrent opioid analgesia, as well as the short and long-term effects of repeated administration. Once infants in the NICU are determined to be eligible for the study and parents consent, infants will be randomized to one of 3 dose of sucrose and their pain will be assessed using a validated pain assessment measure.