This combination product contains three substances: lansoprazole (ATC code: A02B C03), tetracycline (ATC code: J01A A07) and metronidazole (ATC code: J01X D01). The three substances are all classified as Probably not porphyrinogenic (PNP) and the combination is therefore classified as Probably not porphyrinogenic (PNP). For more details please refer to the monographs of the three substances.