Clinical experience as well as several references indicate non-porphyrinogenicity.

(To be edited, initial data ST OCT 04) Penicillin derivative broadspectrum antibiotic for parenteral use. Metabolized to slight extent to penicilloic acid but 79-92 % of the dose is excreted unchanged. South African list: use. Australian list: safe. Thunell: repeatedly shown to be safe.

Uneventful use reported in 1 patient with acute porphyria.