Tesokine

From Multiversal Omnipedia

Tesokine was a pharmaceutical that helped a baby from one species metabolize the nutrients of another when growing in the womb. For example, it was used so that Miles and Keiko O'Brien's baby could be carried to term by Kira Nerys, enabling the baby to process Bajoran nutrients.

Comments

Presumably, the chemical is used most frequently for mixed-species children.