World Nutrition uses ingredients from the purest sources. Vitalzym is manufactured at World Nutrition's facility in Phoenix, AZ. Women with fibrosis conditions have many questions that don't apply to general Vitalzym use. These answers are based on my knowledge from my personal use of Vitalzym and the reports I receive from women taking it for fibrosis conditions - most often for uterine fibroid tumors.

DO NOT take Vitalzym for fibroids if you are pregnant. While a fibroid is being lysed away pockets of estrogen are sometimes released. Any increase in estrogen during pregnancy could cause miscarriage. The article written by Dr. Wong, Increasing Fertility and Maintaining Pregnancy Naturally, talks about using enzymes during pregnancy to prevent miscarriage. This article indicates that it is safe to take enzymes while pregnant (except to fight fibroids). See similar questions...

Among the many thousands who have had tissue implant injections, less than 1% of patients have reported adverse reactions. The precautions we take, including eliciting a patient history and testing for allergy, reduce the likelihood of side effects. See similar questions...