I wouldn't trust that one. I'm 99% sure it's just tap water like everything on amazon etc that claims to be oxytocin nasal spray for two reasons:
1. It's sold from a site called "super-nutrition" which rings a warning and indicates that they do not sell stuff that can be considered actual medication but rather nutritional supplements.
2. The producer behind that brand of oxytocin is called "Smart Publications" and from my brief research they seem to be a alternative/nature medicine web publication that mostly promotes nutritional supplements.
I call homeopathic bullshit. Contact a doctor instead.
EDIT: Oh, and I forgot.
3. "Do not take if you are pregnant or breast-feeding" Well, the main use for oxytocin is to prescribe it to new mothers who are breast-feeding, so that doesn't really add up, does it?