Grade: C (Unclear or Conflicting Scientific Evidence)
Therapy	Specific therapeutic Use(s)
5-HTP	Psychiatric disorders
Betel nut	Schizophrenia
Chromium	Schizophrenia
Copper	Schizophrenia
DHEA	Schizophrenia
Ginkgo	Schizophrenia
Melatonin	Schizophrenia (sleep disorders)
Omega-3 fatty acids, fish oil, alpha-linolenic acid	Schizophrenia
Rutin	Schizophrenia
Grade: D (Fair Negative Scientific Evidence)
Therapy	Specific therapeutic Use(s)
Choline	Schizophrenia
Evening primrose oil	Schizophrenia
Traditional or Theoretical Uses which Lack Sufficient Evidence
Therapy	Specific therapeutic Use(s)
5-HTP	Psychosis (LSD-induced)
Agaric	Hallucinogenic
American hellebore	Mental illness
American pennyroyal	Hallucinations
Apricot	Mental health (neuropsychometric symptoms in AIDS patients)
Bacopa	Mental disorders
Bael fruit	Mental illnesses
Bitter almond	Mental health (neuropsychometric symptoms in AIDS patients)
Calamus	Mental disorders
Chaparral	Hallucinations (including due to LSD ingestion)
Coenzyme Q10	Psychiatric disorders
Damiana	Hallucinogenic
Devil's club	Psychiatric disorders
DMSO	Schizophrenia
Germanium	Mental disorders
Ginseng	Psycho-asthenia
Gotu kola	Mental disorders
Ground ivy	Psychiatric disorders (monomania)
Ignatia	Delusions
Kava	Antipsychotic
Lavender	Psychosis
Niacin	Diagnostic test for schizophrenia
Oleander	Psychiatric disorders
Omega-3 fatty acids, fish oil, alpha-linolenic acid	Psychological disorders (borderline personality disorder)
Perilla	Schizophrenia
Peyote	Hallucinogenic
Podophyllum	Mental disorders
Pygeum	Psychosis
Quercetin	Schizophrenia
Raspberry	Mental health
Rhodiola	Schizophrenia
Salvia divinorum	Hallucinogenic
Vitamin B12	Psychiatric disorders
Vitamin B6	Psychosis
Yohimbe bark extract	Hallucinogenic
Zinc	Psychosis