Clinical Iron™ – (Formerly Energy + Endurance) :: Terry Naturally Vitamins
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Clinical Iron™ – (Formerly Energy + Endurance)

Supplement Facts

Serving Size: 2 Tablets

Servings Per Container 30
Ingredient Amount/Serving Daily Value

Iron (as Ferrochel® ferrous
   bisglycinate chelate)

30 mg 166%

Magnesium (as TRAACS® magnesium
   bisglycinate chelate buffered)

300 mg 75%

Zinc (as TRAACS® zinc
   bisglycinate chelate)

10 mg 66%

Copper (as TRAACS® copper
   bisglycinate chelate)

2 mg 100%

Other Ingredients: microcrystalline cellulose, aqueous film coating (polydextrose, hydroxypropyl cellulose, methylcellulose, titanium dioxide, glycerin, riboflavin [for color]), croscarmellose sodium, dicalcium phosphate, vegetable source stearic acid, silicon dioxide, vegetable source magnesium stearate.

Contains no: salt, yeast, wheat, gluten, soy, dairy products, artificial coloring, artificial flavoring, or artificial preservatives.

Ferrochel® and TRAACS® are registered trademarks of Albion Laboratories, Inc.

If pregnant or nursing, consult a health care practitioner before using.

(How it Works)

How it Works:

Studies have shown that everyone – children, women and men - need iron in their diet in order to create healthy red blood cells and muscle tissue, and keeps energy levels strong.* 1-3   Naturally, women who are pregnant or nursing require iron, but everybody who is active – or wants to be more so – should have this essential mineral. In fact, people who exercise intensively may have a 30% greater need for iron.* 3 In part, that’s because iron and zinc helps the body produce erythropoietin (EPO), which is important for red blood cell production that helps fuel muscle tissue.*4

However, further surveys have shown that the need for iron in the diet may be greater than was previously thought, so is it not just a mineral required by athletes.5

Other minerals in the formula are important as well. Magnesium works in partnership with iron, and supports the muscles in the body by helping fuel cellular activity.6-9

Aside from assisting iron in EPO production, zinc also promotes the body’s own natural antioxidant, glutathione, to help reduce oxidative stress – especially important for muscle tissue during and after exercise.10,11

The amino-acid chelated copper in the formula is included to help the body create energy-rich red blood cells.12-16


  1. Institute of Medicine. Food and Nutrition Board. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium and Zinc. Washington, DC: National Academy Press, 2001.
  2. Beard J and Tobin B. Iron status and exercise. Am J Clin Nutr 2000:72:594S-7S.
  3. Sempos CT. Do body iron stores increase the risk of developing coronary heart disease? Am J Clin Nutr.2002;76(3):501-3.
  4. Cohen D, Raja RM. Erythropoietin (EPO) requirements remain high in EPO resistant patients after iron repletion. ASAIO J. 1998 Sep-Oct;44(5):M596-7.
  5. Looker AC, Dallman PR, Carroll MD, Gunter EW, Johnson CL. Prevalence of iron deficiency in the United States. JAMA 1997;277:973–6.
  6. Bilbey DL. Muscle cramps and magnesium deficiency: case reports. Can Fam Physician. 1996 Jul;42:1348-51.
  7. Magnesium. In: Hendler SS, ed. PDR for Nutritional Supplements. 2nd ed. Montvale, NJ: Physician’s Desk Reference; 2008:404-409.
  8. Zorbas YG, Kakurin AG, Kuznetsov NK, Federov MA, Yaroshenko YY. Magnesium loading effect on magnesium deficiency in endurance-trained subjects during prolonged restriction of muscular activity. Biol Trace Elem Res. 1998 Aug;63(2):149-66.
  9. Zalcman I, Guarita HV, Juzwiak CR, Crispim CA, Antunes HK, Edwards B, Tufik S, de Mello MT. Nutritional status of adventure racers. Nutrition. 2007 May;23(5):404-11. Epub 2007 Mar 26.
  10. Mills BJ, Lindeman RD, Lang CA. Effect of zinc deficiency on blood glutathione levels. J Nutr. 1981 Jun;111(6):1098-102.
  11. Zinc. In: Hendler SS, ed. PDR for Nutritional Supplements. 2nd ed. Montvale, NJ: Physician’s Desk Reference; 2008:730-734.
  12. Hassan, H.M., “Superoxide dismutases,” in Evered, D. and Lawrensan, G., eds., Biological Roles of Copper (Amsterdam; Excerpta Medica) 125, 1980.
  13. Joester, K., Jung, G., Weber, U., and Wester,U.: “Superoxide Dismutase Activity of Cu- Amino Acid Chelates,” FEBS Letters 25(1); 25-27; September 1972.
  14. Brigelius, R., Spotti, R., Bors, W., Lengfelder, E., Saran, M., and Wester, U: “Superoxide Dismutase Activity of Low Molecular Weight Cu-Chelates Studied by Pulse Radiolysis,” FEBS Letters 47(1); 72-75; October 1974.
  15. DiSilvestro, R., et al., “Effects of Copper Supplementation on Cerulplasmin and Copper-Zinc Superoxide Dismutase in Free Living Rheumatoid Arthritis Patients,” J Amer Col Nutr II (2); 177-180, 1992.
  16. Lee, G., “Role of Copper in Iron Metabolism and Heme Biosynthesis,” in Prasad, A., ed., Trace Elements in Human Health and Disease (New York: Academic Press), V1, 373, 1976.

Additional Health Information

Clinical Iron™ – (Formerly Energy + Endurance)

Revitalizing Energy and Stamina*


Dietary Supplement

Recommendations: 1-2 tablets daily, or as recommended by your healthcare practitioner.

Fatigued? Run Down? Clinical Iron™ is the Answer!

• Iron plus synergistic minerals for oxygen rich blood cells
• Endurance and stamina
• Easily absorbed, stomach-friendly formula*


Product Number(s):
26606 - 60 Tablets - $21.95


The research articles and study abstracts presented here in Library were prepared by independent authors and researchers. They are being reproduced on this site in their entirety. No such article or study abstract is intended to promote a particular manufacturer or brand of dietary supplement. This information is not intended to replace the advice of a health care practitioner. Accordingly, individuals must necessarily assume responsibility for their own actions, safety, and health. Furthermore, the company is not liable or responsible for any loss, injury, or damage allegedly arising from any information posted on this site.

This information is being presented pursuant to Section 5 of the Dietary Supplement Health and Education Act of 1994 (DSHEA).

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