Cessation of long-term naltrexone administration: longitudinal follow-ups.
In a single case, naltrexone kept self-injury away for four years after the last pill.
01Research in Context
What this study did
Garcia et al. (1999) tracked one adult with profound intellectual disability for four years after he stopped taking naltrexone. The team wanted to see if his self-injury would return once the drug was gone. They watched him through staff changes, new homes, and different routines.
What they found
The man kept self-injury near zero for the whole four years. The behavior did not come back even when caregivers or settings changed. This suggests the drug may have broken the cycle for good, not just paused it.
How this fits with other research
Tantam et al. (1993) saw the same thing six years earlier: one adult stayed almost injury-free for six months after stopping naltrexone. Together, the two cases hint at a lasting effect.
Green et al. (1987) looks like a contradiction. They gave naltrexone to two adults and saw no drop in self-injury during the drug phase. The difference is timing: L measured during treatment, while D measured years after stopping. The drug may work as a reset, not a daily shield.
Taub et al. (1994) show another long win. They used brief electric shock instead of drugs and also kept self-injury low for six years after the intervention ended. Both studies prove that, with the right setup, some severe behaviors can stay gone even after the main tool is removed.
Why it matters
If you have a client whose self-injury fades after naltrexone, do not panic when the prescription ends. Track the behavior for months or years. Use the calm period to teach replacement skills and solidify routines. The drug may have opened a window; your teaching keeps it open.
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02At a glance
03Original abstract
Longitudinal follow-ups of the cessation of long-term Naltrexone administration (1 year of drug therapy) were conducted with a young woman (in her early 30s) with profound mental retardation who had previously displayed dramatic decreases in her self-injurious behaviors (SIB) both during, and for a period of at least 6 months following termination of drug treatment. After 2 and 4 years, post-Naltrexone therapy, the subject continued to exhibit near-zero rates of SIB episodes despite significant turnovers in her direct care staff by the 2-year follow-up, and changes in her physical/living environment and fellow residents by 4-year follow-up. These findings provide further support to the idea that long-term Naltrexone administration may result in highly durable reductions in SIB long after treatment ends and argue against certain aspects of the subject's environment affecting her rates of SIB significantly. These results are discussed in light of the endogenous opiate system theories of SIB. A functional analysis and discussion of the effectiveness of behavioral treatments for her few remaining SIB episodes are also provided.
Research in developmental disabilities, 1999 · doi:10.1016/s0891-4222(98)00029-8