I've been on lots of narcotics for chronic pain, from methadone to hydrocodone to morphine. All of them made the pain better, methadone most of all, but left me feeling that my get-up-and-go just... got up and went. Necessary evil, right? I was constipated, bored, and just plain sick of being on the drugs.
Levorphanol
Limited data
Limited data
Sparse data. Doses and effects may be unreliable or untested.
- 2 corroborating sources
- no dose data
- PubChem toxicity data
Limited data
Sparse data. Doses and effects may be unreliable or untested.
- 2 corroborating sources
- no dose data
- PubChem toxicity data
Aliases: Dextrophan
Summary
Levorphanol is a narcotic analgesic (opioid pain reliever) that may be habit-forming. Like other mu-agonist opioids, it is believed to act at receptors in the periventricular and periaqueductal gray matter of both the brain and spinal cord to alter the transmission and perception of pain. It is nearly as effective taken orally as by injection.
Opioid MME Calculator
⚠ Citation & Disclaimer:
Conversion factors sourced from the
NIH HEAL Initiative MME Calculator (Adams et al., PAIN 2025),
the CDC 2022 Clinical Practice Guideline for Prescribing Opioids for Pain,
and the MDCalc MME Calculator.
These are approximate equianalgesic ratios for educational reference only.
Individual responses vary significantly based on genetics, tolerance, cross-tolerance, and route of administration.
This is not medical advice. Do not use these conversions to adjust opioid dosing without professional medical guidance.
mg
0.9
mg
Levorphanol
≈
—
mg
Morphine
| Substance | Equivalent Dose | MME Factor |
|---|
⚠ Equianalgesic dose ratios are approximations and do not account for genetic factors, tolerance, incomplete cross-tolerance, or pharmacokinetic variations. Methadone conversion is especially variable at higher doses. Always consult a healthcare provider before making any changes to opioid therapy.
Community Trip Reports
Anecdotal first-person accounts from Reddit, Erowid, Bluelight, and Dose.wiki. Click a source to expand. Reports are harm-reduction context, not medical guidance. Tags summarise each author's own verdict — how reports are classified.
Erowid 1 report 1 positive visit
Pill Identifiers
2
known pill identifiers on record — view imprints, colors, shapes, and images
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Levorphanol's nerd page
Pharmacology, chemical data, effect profiles, and more
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Helpful Links
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