Inclusion Criteria:  Chronic pancreatitis of at least 3 years At least 3 episodes of pain in the past 3 months Pain score of at least 3 on VAS (0-10) Age 18-60yrs Both genders  Exclusion Criteria:  Acute pancreatitis episode at the time of enrolment. Pancreatic cancer. Other chronic painful conditions. Active substance use (alcohol, smoking, smokeless tobacco, illicit drugs). Pregnancy and lactation. Inability to give informed consent.