Comparative Clinical Study Evaluating the Possible Efficacy of Duloxetine, Gabapentin and Lacosamide on Oxaliplatin-Induced Peripheral Neuropathy in Cancer Patients

Inclusion Criteria: * A) Adults ≥ 18 years old male and female patients. B) Patients with gastrointestinal cancer receiving oxaliplatin chemotherapy Exclusion Criteria: * A) Preexisting neuropathic or brain disorders. B) Previous use of chemotherapeutic agents including taxanes, platinum, vinca alkaloids, and bortezomib. C) Concomitant use of drugs reported to have neuroprotective role and analgesics. D) Patients with diabetes, uncontrolled hypertension, congestive heart failure, drug addiction and patients who were receiving tamoxifen. E) Patients with abnormal renal function tests (serum creatinine ≤ 30 ml/min) or liver function tests (≥ 3 times the upper normal range). F) Participants with a documented medical history of neuropathy. G) Concomitant use of other antidepressants, anticonvulsants, high-dose vitamin supplements or drugs known to influence serotonin levels. H) Pregnancy and lactating women. I) Uncooperative patients and patients who have psychological problems or on antipsychotic medications.