This combination product contains two substances: simvastatin (ATC code: C10A A01) and acetylsalicylic acid (ATC code: B01A C06). Both of them are safety classified as Probably not porphyrinogenic (PNP), and the classification of the combination is therefore safety classified as Probably not porphyrinogenic (PNP). For more details please refer to the monographs of the two substances.