Zynrelef vs Exparel: The Battle of Postoperative Pain Control After Robotic Sleeve Gastrectomy

Inclusion Criteria: 1. Age range: 18-65 years old 2. Scheduled or being scheduled to undergo robotic sleeve gastrectomy by Dr. Goyal. 3. Is able to provide written informed consent. 4. Is able to adhere to the study visit schedule and complete all study assessments. Exclusion Criteria: 1. Positive urine drug screen prior to surgery 2. History of substance abuse in the past year-by self report 3. Patient with ongoing daily narcotic use at the time of surgery-by self report 4. Inability to understand informed consent or read English/Spanish 5. Pregnant or lactating patients 6. Prisoners 7. Patients with renal or hepatic failure 8. Bupivacaine use within 96 hours of operation 9. Patient intolerant of opiates, nonsteroidal anti-inflammatory drug s, acetaminophen, or Zynrelef and Exparel. Subjects in all cohorts must not have any contraindications to any of the protocol-specified drugs 10. Patient with a history of asthma, urticaria, or other allergic-type reactions after taking aspirin or other NSAIDs. Severe, sometimes fatal, anaphylactic reactions to NSAIDs have been reported in such patients