[{"arm_notes": "nan", "treatment_id": null, "treatment_name": "Low-Dose Naltrexone", "treatment_type": "Drug", "pharmacological_treatment": "Pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "Placebo", "treatment_type": "Other", "pharmacological_treatment": "Placebo"}]

[{"arm_notes": "nan", "treatment_id": 2187, "treatment_name": "Placebo", "treatment_type": "Placebo", "pharmacological_treatment": "Placebo"}, {"arm_notes": "nan", "treatment_id": 855, "treatment_name": "Naltrexone", "treatment_type": "Central nervous system agents", "pharmacological_treatment": "Pharmacological treatment"}]