Oxytocin is destroyed in the gastrointestinal tract, and therefore must be administered by injection or as nasal spray. Oxytocin has a half-life of typically about three minutes in the blood. Oxytocin given intravenously does not enter the brain in significant quantities - it is excluded from the brain by the blood-brain barrier. There is no evidence for significant central nervous system entry of oxytocin by nasal spray. Oxytocin nasal sprays have been used to stimulate breastfeeding but the efficacy of this approach is doubtful.[56]
I would just like to point out that oxytocin doesnt cross the blood brain barrier at all. So orally, nasally, rectally, intravenously, intramuscularly, buccally and sublingually are all effectively worthless
So did nobody bother to read the wikipedia article at all?
I would just like to point out that oxytocin doesnt cross the blood brain barrier at all. So orally, nasally, rectally, intravenously, intramuscularly, buccally and sublingually are all effectively worthless
So did nobody bother to read the wikipedia article at all?
The real question to consider is that when the brain releases oxytocin, say in response to another drug like MDMA or the presence of your significant other, it probably does not flood all of the CNS and periphery with oxytocin to stimulate all possible oxytocin receptors in the body, rather it releases it to a specific set of neurons to get the desired effect (ie, bonding).
But when you do something like intranasal oxytocin where you take a huge dose just to get a "decent" amount into the brain, and a bunch of that initial dose just ends up falling down your nasal pathways into your periphery, you end up activating all of the oxytocin receptors in the body and brain and you get all of the effects... both those desirable and undesirable.