What do SNRIs primarily do?

What do SNRIs primarily do?

• A. Increase levels of serotonin and norepinephrine
• B. Inhibit reuptake of dopamine only
• C. Block serotonin receptors
• D. Enhance acetylcholine release

Answer: (B)

SNRIs work by increasing the levels of two mood-related neurotransmitters in the brain—serotonin and norepinephrine—through blocking their reuptake into neurons. By inhibiting the transporters that normally clear these chemicals from the synaptic gap (the serotonin transporter and the norepinephrine transporter), more of each neurotransmitter remains available to stimulate receptors. This enhanced signaling helps improve mood and reduce anxiety in many patients. They don’t primarily affect dopamine reuptake, block serotonin receptors, or cause acetylcholine release. Commonly used examples include venlafaxine and duloxetine, which illustrate the dual action on serotonin and norepinephrine rather than the other mechanisms listed.

SNRIs work by increasing the levels of two mood-related neurotransmitters in the brain—serotonin and norepinephrine—through blocking their reuptake into neurons. By inhibiting the transporters that normally clear these chemicals from the synaptic gap (the serotonin transporter and the norepinephrine transporter), more of each neurotransmitter remains available to stimulate receptors. This enhanced signaling helps improve mood and reduce anxiety in many patients.

They don’t primarily affect dopamine reuptake, block serotonin receptors, or cause acetylcholine release. Commonly used examples include venlafaxine and duloxetine, which illustrate the dual action on serotonin and norepinephrine rather than the other mechanisms listed.