Oxytocin is triggered by orgasm and in addition to lowering cortisol, it's just good stuff all on its own. Higher levels of oxytocin makes us happy. Conversely, low oxytocin is linked to post-partum depression and lower levels of thyroid hormone. Oxytocin is positively linked to a tighter parent-child bond. Apr 14, 2022 · Oxytocin may cause serious or life-threatening side effects in the newborn baby, including: slow heartbeats or other abnormal heart rate; jaundice (a yellow appearance of the baby's skin); a seizure; eye problems; or. problems with breathing, muscle tone, and other signs of health. Talk with your doctor about the risks of using oxytocin..