What does the Catholic Church say about IVF

"The Vatican opposes IVF and related procedures because embryos created in a laboratory are often discarded, whereas others are frozen and still others are created for medical research purposes, for example to create stem cells."

INSTRUCTION ON RESPECT FOR HUMAN LIFE IN ITS ORIGIN

AND ON THE DIGNITY OF PROCREATION
REPLIES TO CERTAIN QUESTIONS OF THE DAY

5. IS HOMOLOGOUS 'IN VITRO' FERTILIZATION MORALLY LICIT?

"Although the manner in which human conception is achieved with IVF and ET cannot be approved, every child which comes into the world must in any case be accepted as a living gift of the divine Goodness and must be brought up with love."

6. HOW IS HOMOLOGOUS ARTIFICIAL INSEMINATION TO BE EVALUATED FROM THE MORAL POINT OF VIEW?

"If the technical means facilitates the conjugal act or helps it to reach its natural objectives, it can be morally acceptable. If, on the other hand, the procedure were to replace the conjugal act, it is morally illicit.
Artificial insemination as a substitute for the conjugal act is prohibited by reason of the voluntarily achieved dissociation of the two meanings of the conjugal act