The FDA today posted on its website a warning letter sent to Wyeth Pharmaceuticals Inc. over a professional journal ad for depression drug Effexor XR (venlafaxine HCl).
EFFEXOR XR is believed to work by affecting the levels of 2 naturally occurring chemicals in the brain — serotonin and norepinephrine. Because EFFEXOR XR works on these 2 chemicals, it is known as an SNRI, or serotonin-norepinephrine reuptake inhibitor.
The letter and promotional material is attached.
EFFEXOR XR is believed to work by affecting the levels of 2 naturally occurring chemicals in the brain — serotonin and norepinephrine. Because EFFEXOR XR works on these 2 chemicals, it is known as an SNRI, or serotonin-norepinephrine reuptake inhibitor.
The letter and promotional material is attached.
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