For 10 points, name this peptide dubiously nicknamed the "love hormone."
Paul Zak is known for questionable studies involving intranasal administration of this molecule. A precursor peptide is cleaved to form neurophysin I and this molecule, which stimulates PGF-alpha release. Like (*) ADH, this hormone is made in magnocellular neurons of the hypothalamus and released by the posterior pituitary. With prolactin, this hormone causes the letdown reflex. In the Ferguson reflex, this hormone causes cervical dilation, and it's involved in maternal bonding. For 10 points, name this peptide dubiously nicknamed the "love hormone."
Paul Zak is known for questionable studies involving intranasal administration of this molecule.
oxytocin [or OXT]