• Contains Key Testosterone Ingredients
  • No Stimulants, so you can take at anytime of day
  • Need to take 4 capsules a day
  • Slightly pricey considering serving size of bottle
7.2Overall Score

Iron Test, part of the Arnold Series by Muscle Pharm, is a testosterone support supplement that has recently gained more attention as it has moved from being a GNC exclusive to now being available from

Iron Test retails for about $43 per bottle and provides 90 capsules. The price-to-serving size is about average of competing testosterone supplements, especially considering the optimal dose is 2 capsules taken twice per day.

Is there anything that makes Arnold Iron Test stand out from the rest? Or is it merely just another test-booster?

In-Depth Look at Arnold Iron Test Ingredients

As is custom for most testosterone-support supplements, Arnold Iron Test provides a healthy serving size of vitamin D and zinc, micronutrients that have been shown to support healthy testosterone levels. [1] [2]

Some other big ingredients in Arnold Test’s Iron Test Blend include D-aspartic acid and fenugreek.

D-aspartic acid is an amino acid that has been shown to boost testosterone levels. [3]

Fenugreek is often supplemented on by athletes who are looking to ameliorate natural testosterone levels.

Boron is another ingredient included in Arnold Iron Test. However, after looking at some research behind this ingredient, I am not convinced it consistently and effectively boosts testosterone levels. One study shows boron supplementation had no effect on total testosterone, among other factors measured. [4]

What is the Best Way to Take Arnold Iron Test?

You should take 2 capsules twice daily. The company recommends taking 2 capsules with food in the morning, and 2 capsules before bed. It’s important to notice there aren’t any stimulants in Arnold Iron Test, so it really doesn’t matter what time you take them, so long as you separate the 2 doses throughout the day.

If you take Arnold Iron Test as directed, that is approximately 4 capsules per day, which means one bottle will last roughly 22 days. I think that $45 for a 22-day period is slightly on the expensive side, especially if you are considering supplementing with Arnold Iron test for an extended amount of time.

However, if you’re willing to look past the price, Arnold Iron Test may be something to consider if you want to optimize your natural testosterone levels.


[1] Pilz S, et al. “Effect of vitamin D supplementation on testosterone levels in men.” Horm Metab Res. 2011 Mar; 43(3):223-5.

[2] Prasad AS, et al. “Zinc status and serum testosterone levels of healthy adults.” Nutrition. 1996 May; 12(5):344-8.

[3] Topo E, et al. “The role and molecular mechanism of D-aspartic acid in the release and synthesis of LH and testosterone in humans and rats.” Reprod Biol Endocrinol. 2009 Oct 27; 7:120.

[4] Ferrando AA, Green NR. “The effect of boron supplementation on lean body mass, plasma testosterone levels, and strength in male bodybuilders.” Int J Sports Nutr. 1993 Jun; 3(2): 140-9.

About The Author

Brian E. is from southern California and has worked for names like GNC and Vitamin Shoppe as a supplement expert and consultant. He currently lives in Utah and is studying marketing.

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