Table 2.

Examples of normal constituents of the diet or enzymes used as dietary supplements to treat or prevent illnesses or diseases associated with deficiencies

Compound	Deficiency disease
Normal dietary constitutents
Carnitine	Primary deficiency 24; valproate toxicity 25
Cereal starch	Glycogen storage disease 26
Cobalamins	Pernicious anaemia 27
Ferrous salts	Iron deficiency anaemia 28
Folic acid *	Folate deficiency 29
Vitamin C	Scurvy 30
Vitamin D analogues	Osteomalacia and rickets 31
Zinc	Acrodermatitis enteropathica 32
Enzymes 33
Agalsidase	Fabry's disease
Alglucosidase alfa	Pompe's disease
Galsulfase	Mucopolysaccharidosis type VI
Idursulfase	Mucopolysaccharidosis type II
Imiglucerase	Gaucher's disease types I and III
Lactase	Lactose intolerance 34
Laronidase	Mucopolysaccharidosis type I
Pancreatic enzymes	Exocrine pancreatic insufficiency 35
Velaglucerase alfa	Gaucher's disease type I

^* Also used in pregnancy to prevent neural tube defects, a use that is not relevant to this table.