There is no data indicating zinc acetate is interacting with CYP and it is therefore probably not porphyrinogenic.

Zinc salt

Zinc acetate is indicated for the treatment of Wilson’s disease.

Around 80% of zinc is bound to erythrocytes and the rest is mainly bound to albumin and other plasma proteins. The elimination of zinc results primarily from faecal excretion. The faecal excretion is in the greatest part due to the passage of unabsorbed zinc but it is also due to endogenous intestinal secretion.