Hindmarsh T, Grepe A, Widén L
Acta Radiol Diagn (Stockh). 1975 Mar;16(2):129-34. doi: 10.1177/028418517501600204.
One single clinical complication of grand mal seizures in conjunction with the subarachnoid administration of the new non-ionic contrast medium metrizamide is reported in a patient who had been taking chlorpromazine. An interaction between the contrast medium and phenothiazine derivatives is considered probable.