Venlafaxine(Effexor) metabolite. Till now no clinical significant difference between it and its parent drug. Approved by FDA this year. Marketed under the name Pristiq. Wyeth trying to get approval for treatment of menopausal hot flushes to help sales.

effexor withdrawal

"the electric brain thing", "the Zaps", "Blips", "Effexor shocks" or "brain spasms", is a rare but notorious withdrawal symptom of SSRI