>Yes, someone else corrected me privately that the *IV* oxytocin is
>different and does not cross blood-brain barrier. Thanks. But, I still
>wonder, if they are chemically the same, how can they not have same
>effects?

Dr. Uvanas-Moberg said that it acts as a feedback inhibitor.  It does not
cross the blood-brain barrier and thus its *presence* may inhibit the
spontaneous release of oxytocin.

In my words the body *thinks* it's already there so the release that travels
through the spine and on to receptors throughout the central nervous system,
does not occur. She stressed that the *natural* oxytocin is released from
the brain and travels through the cns and not just through the blood system.

Patricia Gima, IBCLC
Milwaukee

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