Check with your doctor if severe nausea and vomiting continue after leaving the hospital or cancer treatment center.
This medicine may cause serious allergic reactions, including anaphylaxis. Anaphylaxis can be life-threatening and requires immediate medical attention. Tell your doctor right away if you or your child have a rash, a fast heartbeat, fever, hives, itching, irritation, hoarseness, joint pain, stiffness or swelling, rash, redness of the skin, swelling of the eyelids, face, lips, hands, or feet, tightness in the chest, or trouble breathing or swallowing after receiving this medicine.
Palonosetron may cause a serious condition called serotonin syndrome if taken together with some medicines such as fentanyl (Abstral®, Duragesic®), lithium (Eskalith®, Lithobid®), tramadol (Ultram®), or medicines to treat depression (such as mirtazapine, Remeron®). Check with your doctor first before taking any other medicines with palonosetron.