International Journal of Clinical Pharmacy

A modified olanzapine-based anti-emetic regimen for the control of nausea and vomiting in patients receiving weekly cisplatin

Background There is limited data on specific antiemetic protocols for control of chemotherapy-induced nausea/vomiting (CINV) caused by weekly cisplatin regimens. Olanzapine is an active agent against CINV and may offer better control of nausea compared to aprepitant/fosaprepitant-based regimens. The usual antiemetic dose of olanzapine (10 mg for four days) causes problems with drowsiness. A lower dose may be as effective with lesser side effects in patients receiving weekly cisplatin. Objective To assess the control of nausea, vomiting, and occurrence of side effects with a modified olanzapine-based antiemetic regimen among patients with carcinoma of the cervix receiving concurrent cisplatin with pelvic radiotherapy. Setting Tertiary cancer hospital in Southern India. Methods We used a modified regimen "mini-OPD", oral olanzapine (5 mg) days 1 and 2, intravenous palonosetron (0.25 mg) and dexamethasone (12 mg) on day 1 of cisplatin administration in patients with carcinoma of the cervix receiving concurrent chemoradiotherapy with weekly cisplatin (40 mg/m