IC-26 Stats & Data

Justification for harm-reduction additions: (1) Potency variability and causticity: Multiple recent user threads describe severe nasal burn, variable potency vs methadone (≈50–80%), and advise against intranasal or IV use; therefore dose ranges are conservative and insufflation is discouraged. (2) Accumulation risk: Users report long-acting effects and next-day sedation; spacing redoses ≥12–24 h reduces stacking risk. (3) QTc risk inference: Methadone inhibits hERG and prolongs QT; as a close structural analog lacking definitive human data, methiodone should be treated as potentially QT-prolonging—avoid/additively QT-prolonging drugs and consider ECG if using chronically or at higher doses. (4) CYP2B6 interactions: Methadone clearance is driven by CYP2B6; efavirenz/nevirapine markedly reduce methadone levels and precipitate withdrawal—similar interactions are plausible for methiodone, so monitor for underdosing with inducers and for oversedation with inhibitors. (5) Naloxone reversal: For long-acting opioids, repeated doses or infusion may be required due to naloxone’s shorter half-life; monitor for renarcotization. (6) Depressant combinations: TripSit and DrugWise emphasize high overdose risk when opioids are combined with alcohol, benzos, barbiturates, GHB, and gabapentinoids; avoid or use only under medical supervision with rescue naloxone available. (7) Drug checking: Unregulated opioids can be adulterated with fentanyls or nitazenes; lab drug-checking and use of appropriate test strips where available reduce risk—note fentanyl strips do not detect nitazenes. (8) ROA safety: Given frequent reports of harsh acidity, prefer oral capsules or well-diluted solutions; avoid IV/smoking to reduce tissue damage and unpredictable kinetics. (9) Tolerance/withdrawal: Expect rapid tolerance with daily use and prolonged withdrawal resembling methadone; plan spacing and avoid abrupt cessation. (10) Driving/impairment: Long-acting sedation and miosis can persist into the next day; avoid driving and hazardous tasks. First-aid in overdose: support airway/breathing; administer naloxone (repeat as needed) and seek emergency care; monitor for recurrence due to long duration.