Therapeutic Interventions For Pain Induced By Vincristine Treatment For Childhood Acute Lymphoblastic Leukemia (ALL)

Participants randomized to the active treatment arm will receive gabapentin 20mg/kg/day PO divided into 3 doses and rounded to the nearest 100 mg for capsules and 10 mg for liquid preparation.

Participants randomized to the placebo treatment arm will receive look-alike capsules or liquid in a respective capsule size or liquid measure equivalent to the active treatment arm, but which contain no active treatment.