Duloxetine SNRI

Descending pain-modulation pathway meets fibromyalgia's dual pain-mood mechanism

Current Stage

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Reuptake Blockade

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Descending Inhibition

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Pain Amplification

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Depression Score

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Dose Level60 mg

Weeks of Therapy0 wk

Serotonin (5-HT)

Norepinephrine (NE)

Duloxetine molecule

Reuptake transporter

Ascending pain signal

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Weak Descending Inhibition and Central Sensitization

A short placeholder lead describing baseline fibromyalgia pain-mood state.

Low: Descending inhibition (placeholder metric note)
High: Pain amplification (placeholder metric note)
~40%: Depression prevalence (placeholder stat)
Present: Central sensitization (placeholder stat)

Descending pathway placeholder heading

Short placeholder paragraph on weak brainstem-to-cord signaling.

Placeholder highlight: weak inhibition permits pain amplification.

Fibromyalgia pain-mood overlap placeholder

Short placeholder paragraph on shared pain and depression circuitry.

Duloxetine Blocks SERT and NET Reuptake Transporters

Short placeholder lead on duloxetine dual reuptake blockade mechanism.

High: SERT affinity (placeholder stat)
High: NET affinity (placeholder stat)
~12 h: Half-life (placeholder stat)
Hours: Onset of blockade (placeholder stat)

SNRI mechanism placeholder heading

Short placeholder paragraph on dual transporter inhibition.

Placeholder highlight: dual blockade distinguishes SNRIs from SSRIs.

Serotonin and Norepinephrine Accumulate in the Synapse

Short placeholder lead on rising synaptic 5-HT and NE levels.

↑↑: Synaptic 5-HT (placeholder stat)
↑↑: Synaptic NE (placeholder stat)
Sustained: Receptor activation (placeholder stat)
~1 wk: Time to steady state (placeholder stat)

Neurotransmitter dynamics placeholder heading

Short placeholder paragraph on synaptic neurotransmitter accumulation.

Dampening Pain Amplification at the Dorsal Horn

Short placeholder lead on strengthened descending inhibitory signaling.

Rising: Descending inhibition (placeholder stat)
Falling: Dorsal horn amplification (placeholder stat)
Reduced: Central sensitization (placeholder stat)
Brainstem→cord: Pathway (placeholder stat)

Central sensitization placeholder heading

Short placeholder paragraph on reduced spinal pain amplification.

Placeholder highlight: descending inhibition reduces wind-up.

Pain Relief and Mood Improvement Together

Short placeholder lead on combined pain and mood outcomes over weeks.

↓: Pain score (placeholder stat)
↓: Depression score (placeholder stat)
~8-12 wk: Response by (placeholder stat)
5-HT + NE: Dual mechanism (placeholder stat)

Dual mechanism outcome placeholder heading

Short placeholder paragraph tying pain relief to mood improvement.

Placeholder highlight: one mechanism, two overlapping benefits.