How Tramadol Reacts on the Body (The Dual Mechanism)
Unlike Endone (which is a “pure” strong opioid), Tramadol works through two distinct pathways to relieve pain.
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Weak Opioid Receptor Binding: Tramadol (specifically its metabolite M1) binds to the mu-opioid receptors in the brain and spinal cord. This blocks pain signals, similar to Endone, but much weaker. It is approximately 10 times less potent than morphine.
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Serotonin & Norepinephrine Reuptake Inhibition: Tramadol also blocks the reuptake of two brain chemicals: serotonin and norepinephrine. By increasing the levels of these chemicals, Tramadol enhances the body’s natural pain inhibition pathways. This is similar to how some antidepressants (SNRIs) work, which is why Tramadol can be effective for nerve pain (neuropathy).



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