Study quality and limits
Evidence by Condition
Conditions and claim types need separate labels: studied, observationally reported, speculative, or complicated by safety signals.
Key Points
- Condition pages show evidence level, human studies, sample sizes, design quality, outcomes, limitations, and safety signals.
- Opioid use disorder, alcohol use disorder, depression, PTSD, traumatic brain injury, withdrawal, and craving claims require separate review.
- Anecdotes and clinic reports can be useful leads but are not treated like controlled evidence.
- What is not proven appears beside what looks promising.
Evidence Template
- Evidence level: established, early human, observational, case report, preclinical, speculative, or unsupported.
- Human studies: study type, population, sample size, country, setting, comparator, follow-up, and conflicts.
- Outcomes: withdrawal, craving, relapse, disability, mood, sleep, cognition, quality of life, adverse events, and retention are separate outcomes.
- Limits: uncontrolled design, self-selection, missing follow-up, concurrent treatments, expectancy effects, and denominator gaps.
Condition Snapshot
- OUD: strongest public interest, meaningful observational signals, major safety and relapse uncertainty.
- AUD: Noribogaine entered a U.S. early-phase research window in 2026; efficacy remains unproven.
- TBI/PTSD/depression/anxiety: notable veteran signals, but current evidence relies on small observational cohorts and secondary outcomes.
- Parkinson's disease: a 2026 peer-reviewed case report belongs on a watchlist, not on a treatment page.
What Stronger Evidence Would Look Like
- Prospective controlled trials with prespecified endpoints and independent safety monitoring.
- Clear inclusion and exclusion criteria, especially cardiac, psychiatric, withdrawal, and medication criteria.
- Adequate follow-up for relapse, function, quality of life, adverse events, and durability.
- Transparent reporting of dropouts, missing data, concurrent supports, conflicts, and protocol deviations.
Sources
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Educational reference material only; not medical advice, legal advice, dosing instruction, provider referral, or emergency guidance. Emergency, treatment, and legal decisions belong with qualified professionals and local emergency systems.