Xanax is a GABA A positive allosteric modulator. It binds to a site on the receptor that causes the receptor to have a higher affinity for, and a higher response to the neurotransmitter GABA. This results in increased GABAergic signaling when alprazolam is bound.
Without any GABA, alprazolam will not cause any receptor activation.
An antagonist will block the binding of GABA, which will therefore result in a blockade of alprazolam's potentiation of GABA A signaling.
Without any GABA, alprazolam will not cause any receptor activation.
An antagonist will block the binding of GABA, which will therefore result in a blockade of alprazolam's potentiation of GABA A signaling.