Complex sentence: Only one study has reported on the effects of naltrexone on SR in a sample of participants with alcohol dependence: naltrexone, in comparison to a placebo, attenuated subjective stimulation within 10 minutes of after administration of a moderate dose of alcohol, but not thereafter.
Split into simpler sentences: Only one study has reported on the effects of naltrexone on SR in a sample of participants with alcohol dependence. That study found that naltrexone, in comparison to a placebo, attenuated subjective stimulation within 10 minutes of after administration of a moderate dose of alcohol, but not thereafter.