Despite marketing as a “natural” supplement, regulatory bodies (FDA, EMA) have not evaluated serrapeptase for pregnancy safety. This paper synthesizes mechanistic, animal, and theoretical risks.
Some medical resources even suggest using reliable birth control while taking serrapeptase if you plan to become pregnant soon. Serrapeptase and Fertility serrapeptase pregnancy
Serrapeptase is contraindicated in pregnancy due to plausible mechanisms of harm (impaired implantation, hemorrhage, teratogenesis) and total absence of safety data. Avoidance is strongly advised, particularly in the first and third trimesters. Despite marketing as a “natural” supplement