I do not use animal or human parts in my practice, although they are used in TCM. The relatively recent practice of using placenta for post-partum women is controversial. One website that discusses this is https://www.happygoatproductions.com/blog/2016/5/11/placentophagy-and-chinese-medicine, it is mostly a negative view of this practice, but if you scroll down to comments, a TCM practitioner speaks of her positive experiences using placenta. I have no experience with it one way or the other,