Grade: B (Good Scientific Evidence)
Therapy	Specific therapeutic Use(s)
Zinc	Attention deficit hyperactivity disorder (ADHD)
Grade: C (Unclear or Conflicting Scientific Evidence)
Therapy	Specific therapeutic Use(s)
Flaxseed and flaxseed oil	Attention deficit hyperactivity disorder (ADHD)
Gamma linolenic acid	Attention deficit hyperactivity disorder (ADHD)
Iron	Attention deficit-hyperactivity disorder (ADHD)
L-Carnitine	Attention-deficit hyperactivity disorder (ADHD)
Melatonin	Attention deficit hyperactivity disorder (ADHD)
Pantothenic acid	Attention deficit-hyperactivity disorder (ADHD)
Pycnogenol	ADHD (Attention Deficient Hyperactivity Disorder)
SAMe	Attention deficit hyperactivity disorder (ADHD)
Vitamin B6	Attention deficit hyperactivity disorder (ADHD)
Grade: D (Fair Negative Scientific Evidence)
Therapy	Specific therapeutic Use(s)
Evening primrose oil	Attention deficit hyperactivity disorder (ADHD)
Traditional or Theoretical Uses which Lack Sufficient Evidence
Therapy	Specific therapeutic Use(s)
5-HTP	Attention deficit hyperactivity disorder (ADHD)
Bacopa	Attention deficit hyperactivity disorder (ADHD)
Black tea	Hyperactivity (children)
Choline	Attention deficit hyperactivity disorder (ADHD)
Copper	Hyperactivity
Echinacea	Attention deficit hyperactivity disorder (ADHD)
Fennel	Attention deficit hyperactivity disorder (ADHD)
Ginkgo	Attention deficit hyperactivity disorder
Ginseng	Attention-deficit hyperactivity disorder (ADHD)
Grape seed	Attention deficit hyperactivity disorder (ADHD)
Omega-3 fatty acids, fish oil, alpha-linolenic acid	Attention deficit hyperactivity disorder (ADHD)
Passion flower	Attention deficit hyperactivity disorder (ADHD)
Soy	Attention deficit hyperactivity disorder (ADHD)
Spirulina	Attention deficit hyperactivity disorder (ADHD)
Vitamin C	Attention deficit hyperactivity disorder