Naltrexone HCl 50 MG Oral Tablet, Placebo
Conditions
Brief summary
This is a study to see how effective oral naltrexone is as treatment for prolonged grief disorder (PGD). Participants will take their assigned medication for 8 weeks, with monthly visits to assess symptom severity, social connectedness, and adverse reactions.
Interventions
DRUGNaltrexone Oral Product
Generic, oral tablet.
DRUGPlacebo
Oral Placebo
Sponsors
Texas Tech University
Texas Tech University Health Science Center
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to 120 Years
Healthy volunteers
Yes
Inclusion criteria
* 18 years of age or older. * Lives within a reasonable distance from NYPH for convenient clinic visits. * Can speak, read, and write English proficiently. * Meet diagnostic criteria for PGD based on the DSM guidelines * If a female patient, must agree to use a method of contraception and be willing and able to continue contraception during the first 8 weeks of the study while she is taking the study drug. Female patients who are planning to use oral hormonal contraception during this time must have initiated it at least 2 months prior to the baseline visit. * If a male patient, must agree to use a method of contraception and be willing and able to continue contraception during the first 8 weeks of the study while he is taking the study drug.
Exclusion criteria
• Having recently started taking/prescribed medications for any psychiatric illness (e.g. SSRIs for MDD) within the past 3 months; participants who have been taking this medication for longer than 3 months can be included. * Having recently started psychotherapy for any psychiatric illness within the past 3 months; participants who have been receiving psychotherapy for longer than 3 months can be included. * Prior history of recently active (e.g. within the past 3 months) opioid dependence. * Current prescription, non-prescription, or illicit opioid use, (i.e., acute use within the past 14 days or chronic use within the last 30 days), including opioid antagonists for alcohol or opioid dependence, all opioid analgesics, certain cough and cold remedies (e.g., codeine), and certain anti-diarrheal preparations (e.g., loperamide). * Possible future use of opioids during the study (e.g. for surgery). * Current use of leflunomide (Arava), droperidol (Droleptan), diazepam (Valium), thioridazine (Mellaril, Novoridazine, Thioril), or any other clinically relevant medication that has potential to cause liver injury with concurrent use of naltrexone. * Currently pregnant, lactating, or planning to become pregnant during the study. * Active hepatitis or liver disease. * Alanine aminotransferase (ALT) or aspartate aminotransferase (AST) levels more than one standard deviation (SD) above the upper limit of normal on initial laboratory examination. Screen positive for active suicidal thoughts or behaviors.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in Prolonged Grief Disorder symptom severity as assessed by the PGD-12 | Weekly for 12 weeks | Change in PGD symptom severity will be measured by using Prolonged Grief-13 (PGD-12), a self-rated scale consisting of 12 items. For this study, we have added an additional item inquiring about loneliness to be congruent with DSM-5-TR criteria and SCIP. This 5-point Likert-type of measurement tool evaluates the intensity and severity of the PGD. The validity and reliability of the PGD-12 was tested and validated in previous studies. |
| Change in Prolonged Grief Disorder severity as assessed by Structured Clinical Interview for PGD | Every 4 weeks for 8 weeks | The IOS is a self-reported pictorial tool use to measure the subjectively perceived closeness of a relationship. The tool asks respondents to select one of seven pairs of increasingly overlapping circles that best represents their relationship with another, with more overlap signifying a closer relationship. This scale possesses good reliability, with (α = .93) for the entire sample, (α = .87) for family, (α = .92) for friendship, and (α = .95) for romantic relationships. Test-retest reliability shows similar findings, with (α = .83) for the entire sample, (α = .85) for family, (α = .86) for friendship, and (α = .85) for romantic relationships. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Change in strength of subjectively perceived closeness of a social relationship as measured by the Inclusion of the other in the Self (IOS) Scale | Every 4 weeks for 12 weeks | The IOS is a self-reported pictorial tool use to measure the subjectively perceived closeness of a relationship. The tool asks respondents to select one of seven pairs of increasingly overlapping circles that best represents their relationship with another, with more overlap signifying a closer relationship. This scale possesses good reliability, with (α = .93) for the entire sample, (α = .87) for family, (α = .92) for friendship, and (α = .95) for romantic relationships. Test-retest reliability shows similar findings, with (α = .83) for the entire sample, (α = .85) for family, (α = .86) for friendship, and (α = .85) for romantic relationships. |
Countries
United States
Outcome results
None listed