Low-Dose Naltrexone (LDN) for Endometriosis

Why It May Help, Why You May Feel Worse at First, and Why Opioids Cannot Be Used at the Same Time

For many women living with Endometriosis, surgery can be an important step—but often

not the final step. Long-term management may still be needed for pain pathways,

inflammation, fatigue, immune dysfunction, and nervous system sensitivity.

One therapy increasingly used in integrative medicine is Low-Dose Naltrexone (LDN).

LDN can be a valuable tool—but it is also important to understand one major rule:

You Should Not Use Opioids While Taking LDN

Naltrexone works by attaching to opioid receptors in the body.

That means if you are taking opioid pain medications such as:

Oxycodone

Hydrocodone

Morphine

Hydromorphone

Tramadol

Codeine

…the LDN may block or interfere with how those medications work.

What Can Happen If You Mix Them?

Depending on the timing, dose, and your body, combining opioids with LDN can cause:

1. Reduced Pain Relief

Your opioid medication may not work as expected because receptors are being blocked.

2. Sudden Withdrawal Symptoms

If someone is opioid-dependent, naltrexone can trigger precipitated withdrawal, which may

feel intense and abrupt.

• Symptoms can include:

• Sweating

• Anxiety

• Nausea

• Rapid heart rate

• Chills

• Body pain

• Cramping

• Agitation

• Severe discomfort

3. Confusing Medication Response

Patients may think the opioid “stopped working,” when receptor blockade is the issue.

Why This Matters for Endometriosis Patients

Some endometriosis patients may need pain support after surgery, during flares, or

emergency situations.

If you are prescribed LDN, always tell:

• Surgeons

• ER staff

• Dentists

• Pain specialists

• Anesthesiologists

• New providers

This is very important before any procedure.

What If You Need Surgery or Emergency Pain Medication?

Your prescribing clinician may instruct you to hold LDN before surgery or planned opioid

use depending on the situation.

Never stop or restart without medical guidance.

The exact timing varies based on:

• Your dose

• How often you take it

• Procedure type

• Pain management plan

Other medications

Why LDN Still Helps Many Patients

LDN may support:

• Lower neuroinflammation

• Calmer pain signaling

• Improved endorphin response

• Better sleep

• More resilience

• Reduced flare intensity over time

Many patients use it specifically to reduce the need for stronger pain medications long

term.

Why You May Feel Worse at First

Some patients temporarily experience:

• Vivid dreams

• Fatigue

• Headaches

• Mild flare symptoms

• Feeling “off”

This can happen as the body adjusts to receptor changes, immune signaling shifts, and

endorphin rebound pathways.

Often, starting low and increasing slowly helps.

Important Encouragement

If you are in the first few weeks and not feeling amazing yet, that does not automatically

mean it is failing.

Many patients need time to get through the adjustment phase before noticing benefits.

But if you need opioid pain control, surgery, or are having significant side effects, contact

your provider promptly.

Final Thoughts

LDN can be a powerful tool for endometriosis recovery and long-term pain support—but it must be used correctly.

It cannot simply be mixed casually with opioid medications.

Used thoughtfully, with medical supervision, many patients find LDN helps them move

toward calmer pain pathways and better quality of life.