Are there any risks in taking Visipaque (iodixanol)?

Allergic reactions to Visipaque (iodixanol) include: swelling of the face or neck, hives, itchy rash or difficulty breathing. Serious side effects of Visipaque include: urinating less than usual; abrupt weakness or numbness on one side of the body; sudden headaches; confusion, seizures or fainting; vision, speech or balance impairment; swelling in the hands, ankles or feet; chest or spreading arm pain; sweating and nausea; trouble breathing and wheezing; or flu-like symptoms. Less serious side effects include: headaches and dizziness, nausea or vomiting, pain or a cold or hot sensation where the medication was injected, a weird taste in the mouth, itchy or red skin or insomnia; these milder side effects do not require a doctor's attention unless they become severe.