Nausea (unsettled stomach), vomiting (sickness), neurological disorders (disorders that affect the nervous system like hemiparesis (partial paralysis of one side of the body), aphasia (total or partial loss of ability to use or understand language), convulsions (seizures) and hemianopsia (blindness for half the field of vision in one or both eyes), thromboembolism (blood clots that may obstruct blood vessels).