This present investigation aims to determine whether a transversus abdominous plane(TAP) block, utilizing liposomal bupivacaine (Exparel), at the conclusion of a cesarean section decreases post-operative pain. The hypothesis is that performance of the TAP block with liposomal bupivacaine will decrease post-operative narcotic use.

Inclusion Criteria:

• Patients >18 years of age
• Scheduled cesarean section with or without bilateral tubal ligation
• Planned performance of a Pfannenstiel incision
• Patients are schedule to have a cesarean section with a member of the Women's Health or Maternal and Fetal Medicine Departments at Penn State University Hershey S. Medical Center

Exclusion Criteria:

• History of opioid use
• History of chronic pain syndrome
• Use of general anesthesia during cesarean delivery
• Postoperative SICU admission
• Postpartum hemorrhage (defined as an Estimated Blood Loss of greater then 1,000mL upon completion of the cesarean section)