Relugolix and Tramadol: Interaction Details
AI-assisted, pharmacist-reviewed · AI content regenerated Jul 11, 2026 · Source data updated Jul 2, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Tramadol
Relugolix
How we grade severity & evidence
Severity levels
- Contraindicated: These should generally not be used together.
- Major: Potentially serious — often needs a change or close monitoring.
- Moderate: Can be significant — usually manageable with monitoring.
- Minor: Usually limited clinical impact.
Evidence grades
- Established: Well documented — supported by controlled studies or strong clinical data.
- Probable: Good supporting evidence, though not definitively proven.
- Suspected: Some evidence suggests this interaction, but it is not well established.
- Possible: Limited or conflicting evidence; the interaction may occur.
- Theoretical: Predicted from the drugs' pharmacology; not yet confirmed in people.
Ratings come from the documented interaction literature and are reviewed by a pharmacist. They describe the documented risk of the combination, not what will necessarily happen to you — your dose, timing, and health picture all matter.
Here's what's going on. Relugolix (Orgovyx) can speed up an enzyme in your liver called CYP3A4, and that enzyme helps break down tramadol. When it works faster, your body clears tramadol more quickly, so you may get less pain relief than usual. If your body has gotten used to tramadol, this faster clearing could even bring on withdrawal-type feelings.
The good news is your care team can handle this. They may check how well your pain is controlled and adjust your tramadol dose if needed. If your Relugolix is ever stopped, tramadol levels can climb again, so they'll watch you closely then too. Please don't change anything on your own, just talk with your pharmacist or doctor.
Mechanism: Relugolix may induce CYP3A4-mediated metabolism of tramadol, lowering tramadol exposure (reduced AUC/Cmax). Tramadol's analgesia depends partly on the active M1 metabolite, but the net documented effect here is reduced tramadol efficacy.
- Direction: Decreased tramadol effect; risk of inadequate analgesia or opioid withdrawal in dependent patients.
- Evidence: Theoretical; onset unspecified.
- Management: Monitor for reduced efficacy and withdrawal signs; the tramadol dose may need to be increased and individualized. If relugolix is discontinued, anticipate rising tramadol exposure and consider dose reduction, watching for seizures, serotonin syndrome, sedation, and respiratory depression.
What happens
Reduced traMADol exposure and reduced efficacy of traMADol
Interaction Deep Dive
When traMADol is taken alongside a CYP3A4 inducer, traMADol exposure may fall, which can diminish its effectiveness or trigger a withdrawal syndrome in patients who have become physically dependent on traMADol. Once the CYP3A4 inducer is discontinued and its inducing effects wane, traMADol exposure rises, potentially intensifying or extending both therapeutic and adverse effects, with the risk of seizures, serotonin syndrome, and/or respiratory depression that may be fatal. Should combined use be required, monitor patients carefully for reduced efficacy or manifestations of opioid withdrawal syndrome, and raise the traMADol dose when needed. When a CYP3A4 inducer is being withdrawn, weigh a reduction in the traMADol dose and watch patients closely for indications of seizures, serotonin syndrome, respiratory depression, or sedation1.
Why it happens (mechanism)
Induction of CYP3A4-mediated metabolism of traMADol
How to manage this interaction
Keep taking both medicines as prescribed unless your prescriber tells you otherwise. Here is how a care team typically handles this pairing:
- They may watch how well your pain is being controlled and adjust (often increase) your tramadol dose if it isn't working as well.
- They'll look for signs of opioid withdrawal, such as restlessness, sweating, or aches.
- If your Relugolix is ever stopped, they may lower your tramadol dose and monitor for excess sedation, slowed breathing, or other side effects, since tramadol levels can rise again.
Tell your pharmacist or doctor if your pain relief drops off or you feel withdrawal symptoms.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Relugolix and Tramadol together?
Relugolix may make tramadol work less well by helping your body clear it faster, so watch for weaker pain relief or withdrawal and let your care team adjust the dose and monitor you. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Relugolix and Tramadol interaction?
It is rated major. Potentially serious — often needs a change or close monitoring.
How quickly could this interaction happen?
The documented onset is "unspecified". The timing of this interaction is not well characterized.
How is the Relugolix and Tramadol interaction managed?
Keep taking both medicines as prescribed unless your prescriber tells you otherwise. Here is how a care team typically handles this pairing: They may watch how well your pain is being controlled and adjust (often increase) your tramadol dose if it isn't working as well. They'll look for signs of opioid withdrawal, such as restlessness, sweating, or aches. If your Relugolix is ever stopped, they ma… Management is individual — always follow your own care team's guidance.
How strong is the evidence for this interaction?
The evidence is graded "theoretical". Predicted from the drugs' pharmacology; not yet confirmed in people.
From our Q&A
Real reader questions about these medications, each personally answered by our pharmacist:
Questions for your pharmacist
- Does my dose of Relugolix or Tramadol need adjusting while I take them together?
- What symptoms should prompt me to call you or my prescriber right away?
- Does the timing of my doses matter for this combination?
- Is there a safer alternative to one of these medications for me?
References (1)
- Product Information: Tramadol hydrochloride oral tablets, tramadol hydrochloride oral tablets. Strides Pharma, Inc (per DailyMed), East Brunswick, NJ, 2025. DailyMed
Keep reading about Tramadol
Keep reading about Relugolix
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