IP-6 Also indexed as: Inositol Hexaphosphate, Phytate, Phytic Acid
IP-6 is a naturally occurring component of plant fiber.
Where is it found?
IP-6, also known as phytate, is associated with dietary fiber and thus is naturally present in a wide variety of plant foods, especially wheat bran, whole grains, and legumes. Usual dietary intakes range from 1–1.5 grams phytate per day.
IP-6 has been used in connection with the following conditions (refer to the individual health concern for complete information):
Who is likely to be deficient?
While there is no dietary requirement for IP-6, people consuming diets low in dietary fiber and nuts and seeds have the lowest intake.
How much is usually taken?
Virtually all research suggesting beneficial effects from taking IP-6 involve animals and not people. It is not known whether IP-6 would be useful for humans or if so, what would be the optimal amount.
Are there any side effects or interactions?
Phytate in foods has been associated with reduced mineral absorption.1 In particular, significant interference with iron absorption has been reported.2 People who are iron deficient should talk with a doctor before supplementing with IP-6. Even for those who are not iron deficient, if IP-6 supplements are taken for more than several months and fatigue —a possible symptom of iron deficiency develops, a doctor should be consulted. How much iron supplementation (if any) should be used to counteract the iron-depleting effect of IP-6 varies from person to person, though many people are likely to not require such supplementation.
At the time of writing, there were no well-known drug interactions with IP-6.
References (To view, roll mouse over the "References" heading; to hide, click on the heading)
1. Morris ER. Phytate and dietary mineral bioavailability. In Phytic Acid Chemistry and Applications, Graf E (ed). Minneapolis: Pilatus Press, 1986, 57–76 [review].
2. Sandberg A-S, Brune M, Carlsson N-G, et al. Inositol phosphates with different numbers of phosphate groups influence iron absorption in humans. Am J Clin Nutr 1999;70:240–6.
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The information presented in Healthnotes is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires June 2009.