NSTK · 01.2026Independent supplement reference
NutriStack
Edition 1.0Updated July 13, 2026

Tramadol

Prescription ·Exploratory record · not publication-reviewed ·Updated July 13, 2026

A centrally acting synthetic opioid analgesic with a dual mechanism of action, used for the management of moderate to moderately severe pain. Tramadol has weaker mu-opioid receptor affinity than traditional opioids but supplements its analgesic effect through inhibition of norepinephrine and serotonin reuptake. It carries a lower, but still significant, risk of abuse and respiratory depression.

Evidence tier
Strong
Indexed sources
10 2020–2025
Interactions
0
Category
Prescription
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Publication status

Exploratory record, not a reviewed medical publication.

See the editorial and medical-review policies for the publication gate.

This generated database record has not completed a claim-level review by a qualified human medical reviewer. Bibliography links and evidence labels are not approval. The page remains available for reference and is excluded from search indexing.

In short

What the research says.

A quick, data-only summary. The full evidence, dosing, and sources are below.

A centrally acting synthetic opioid analgesic with a dual mechanism of action, used for the management of moderate to moderately severe pain. NutriStack rates the supporting evidence as strong. Common adult dosing is Immediate-release: 50–100 mg every 4–6 hours (max 400 mg/day); Extended-release: 100–300 mg once daily (as prescribed by your physician), though a prescriber sets the actual dose. This profile indexes 10 sources.

What it's good for
  • Relief of moderate to moderately severe pain
  • Dual mechanism provides multimodal analgesia
  • Lower abuse potential than Schedule II opioids8
  • May be useful for neuropathic pain components9,1
What to watch for
  • Nausea and vomiting
  • Dizziness and vertigo
  • Constipation
  • Known hypersensitivity to tramadol or opioids1,2
  • Significant respiratory depression

The bottom line

Evidence rating strong. Most-documented uses: relief of moderate to moderately severe pain, dual mechanism provides multimodal analgesia, lower abuse potential than schedule ii opioids. 10 sources indexed (2020–2025), with 0 interaction records on file.

The science

How it works, mechanistically.

Core mechanism

Binds to mu-opioid receptors in the central nervous system, inhibiting ascending pain pathways. Additionally, tramadol inhibits the reuptake of norepinephrine and serotonin, modulating descending inhibitory pain pathways. The O-desmethyltramadol (M1) metabolite, formed via CYP2D6, has approximately 200-fold greater affinity for mu-opioid receptors than the parent compound.1,2

Class
Opioid Analgesic (Atypical)
Dosing

Dosing & protocol.

Common range
Immediate-release: 50–100 mg every 4–6 hours (max 400 mg/day); Extended-release: 100–300 mg once daily (as prescribed by your physician)
Recommended form
Immediate-release or extended-release tablet

Can be taken with or without food; extended-release tablets must be swallowed whole, do not crush, break, or chew

Safety

Full safety detail.

Side effects

  • Nausea and vomiting
  • Dizziness and vertigo
  • Constipation
  • Headache
  • Drowsiness
  • Seizures (dose-dependent risk)
  • Serotonin syndrome (when combined with serotonergic drugs)
  • Respiratory depression

Contraindications

  • Known hypersensitivity to tramadol or opioids1,2
  • Significant respiratory depression
  • Acute or severe bronchial asthma without monitoring
  • Known or suspected GI obstruction (paralytic ileus)
  • Concurrent use of MAO inhibitors or within 14 days of discontinuation
  • Children under 12 years; children under 18 for post-tonsillectomy/adenoidectomy pain4
Sources

Sources, by evidence tier.

Numbered references. Citations throughout the page link here.

Meta-analyses & systematic reviews

6

Reference material

4
FAQ

Common questions.

Quick answers about Tramadol, drawn from the data on this page.

What is Tramadol?

A centrally acting synthetic opioid analgesic with a dual mechanism of action, used for the management of moderate to moderately severe pain. Tramadol has weaker mu-opioid receptor affinity than traditional opioids but supplements its analgesic effect through inhibition of norepinephrine and serotonin reuptake. It carries a lower, but still significant, risk of abuse and respiratory depression.

What is Tramadol used for?

Commonly cited benefits of Tramadol include: Relief of moderate to moderately severe pain; Dual mechanism provides multimodal analgesia; Lower abuse potential than Schedule II opioids; May be useful for neuropathic pain components. NutriStack rates the overall evidence as strong.

What is a typical dose of Tramadol?

A typical adult dose of Tramadol is Immediate-release: 50–100 mg every 4–6 hours (max 400 mg/day); Extended-release: 100–300 mg once daily (as prescribed by your physician). The commonly recommended form is Immediate-release or extended-release tablet. These are general ranges, not personalized advice; confirm the right dose with a clinician.

What are the side effects of Tramadol?

Reported side effects include nausea and vomiting, dizziness and vertigo, constipation, headache, drowsiness, seizures (dose-dependent risk). This is educational information; check with a healthcare professional before use.

How strong is the evidence for Tramadol?

NutriStack rates this as Strong, meaning multiple high-quality meta-analyses or systematic reviews converge on the same finding. Full tier criteria are at https://nutristackapp.com/methodology/evidence-tiers.

Use this with your stack

Tramadol in NutriStack.

Add it to your stack, see how it interacts with everything else you take, and get a Stack Score that updates the moment it does.

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NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.