Table 4

Main oxalate-rich foods

Oxalate Rich Foods [20]

• Spinach

• Rhubarb

• Purslane

• Parsley

• Lambsquarters

• Chives

• Beet leaves

• Amaranth

• Green tea

• Chocolate

Unfortunately, a simple table is not adequate for comparing oxalate-rich foods since: (a) the relative amounts of soluble and insoluble oxalate affect oxalate absorption, and simple percentage lists make no such distinctions, (b) the oxalic acid content can vary substantially depending on the environment in which the food source was grown, and (c) the amount of oxalate ingested is affected by the methods of food preparation and cooking, and the serving size.

Grases et al. Nutrition Journal 2006 5:23   doi:10.1186/1475-2891-5-23

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