<p>In controlled clinical trials, Palonosetron injection has been safely administered with corticosteroids, analgesics, antiemetics/antinauseants, antispasmodics and anticholinergic agents. Palonosetron did not inhibit the antitumor activity of cisplatin, cyclophosphamide, cytarabine, doxorubicin and mitomycin C in murine tumor models. Concomitant administration of Palonosetron and metoclopramide has no significant pharmacokinetic interactions. In vitro studies indicated that palonosetron is not inhibitor of CYP1A2, CYP2A6, CYP2B6, CYP2C9, CYP2D6, CYP2E1 &amp; CYP3A4/5 (CYP2C19 was not investigated) nor does it induce the activity of CYP1A2, CYP2D6 or CYP3A4/5. Therefore, the potential for clinically significant drug interactions with Palonosetron appears to be low.</p>