Is oxytocin FDA-approved?

Yes. Injectable oxytocin is an FDA-approved medication used clinically to induce or augment labor and to control postpartum bleeding. Intranasal formulations for behavioral effects remain investigational.

Why is oxytocin called the love or bonding hormone?

It is released during childbirth, breastfeeding, and physical intimacy, and research links it to social bonding, trust, and attachment, which is why it is often nicknamed the bonding or love hormone.

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Sexual Health

Clinical

Oxytocin

Also known as: Oxytocin

Oxytocin is a nine-amino-acid hypothalamic neuropeptide hormone involved in social bonding, reproduction, and uterine contraction. It is FDA-approved clinically for labor induction and is studied for its effects on trust, intimacy, and social behavior.

Mechanism of Action

Oxytocin binds the oxytocin receptor (OXTR), a G-protein-coupled receptor that signals primarily through Gq/11 to activate phospholipase C, raising intracellular calcium and driving smooth-muscle contraction in the uterus and mammary myoepithelium. Centrally released oxytocin modulates limbic circuitry in the amygdala, nucleus accumbens, and hypothalamus, influencing social salience, pair bonding, and stress reactivity. It also interacts weakly with vasopressin receptors, which contributes to some cardiovascular and antidiuretic effects.

Half-life: Approximately 1 to 6 minutes (intravenous); intranasal central effects last longer
Administration Routes: intranasal, subcutaneous
Research Status: Clinical