Test Factor


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Test Factor by Molecular Nutrition is a maximum potency testosterone booster! Sub-optimal testosterone can make your work much harder, and goals more difficult to achieve. Peak hormone levels, on the other hand, can supercharge your gains!

Test Factor was formulated by the acclaimed research & development team at Molecular Nutrition with two clear goals in mind. First, to support maximum increases in serum total and free testosterone levels, surpassing previous benchmarks. Second, to create a formula that goes beyond the standard T-boosting effects of this category, supporting a wide range of action including increased protein synthesis rates, reduced muscle catabolism, extended muscle endurance, enhanced recovery, and heightened libido/sexual potency. The resulting formula includes some of the most effective bioactive compounds known to sports science, and represents a major step forward in hormonal support supplementation!

What results can I expect from Test Factor?

Increase Total and Free Testosterone

Increase Muscle Mass & Strength

Improve Muscle Endurance

Preserve Muscle Mass (Anti-Catabolic)

Speed Muscle Recovery

Support Libido & Sexual Function

Ingredient Breakdown

Sarcosine (N-methylglycine): An amino acid found naturally in the body, sarcosine plays an important role in the biosynthesis of testosterone. It is believed to act primarily by supporting N-methyl-D-aspartate (NMDA) neurotransmission. Sarcosine supports the activity of NMDA in two ways. First, it is a competitive inhibitor of the type I glycine transporter (GlyT1). This reduces glycine uptake into cells, increasing its availability for synaptic NMDA receptors. Second, sarcosine has been shown to be a ligand for the NMDA receptor itself, acting as a co-agonist at the glycine binding site. NMDA is directly involved in hypothalamic GnRH synthesis, which in turn increases the output of gonadotropic hormones, and ultimately testosterone.

AlivEL™ 100 Ultimate Eurycoma longifolia (also known as tongkat ali): This ingredient has been shown in placebo-controlled studies to increase testosterone levels by 37% in men. It has also been shown to reduce cortisol by 16%, which is a stress hormone that can break down (catabolize) muscle tissue. These beneficial effects are mediated by a series of bioactive components in the plant, of which eurycomanone is believed to be the most important. High quality eurycoma longifolia extracts are standardized for their eurycomanone content, with 1% being the previous high mark. The new high-potency extract in Test Factor™ contains TWICE that concentration, a remarkable 2% eurycomanone.

PrimaVie™: This part of the Test Factor™ formula is a special high potency extract of Shilajit, an organo-mineral found in the Himalayan mountain region. The main bioactive component of shilajit is believed to be fulvic acid, an organic polymer. Clinical studies on adult infertile men found that 200mg of shilajit per day (containing 54.8% fulvic acid) for 90 days increased testosterone levels by 23.5% (from 4.85ng/mL to 5.99ng/mL). This level of supplementation was also shown to reduce blood glucose by 6.8%, suggesting other potential metabolic improvement. Test Factor™ exclusively uses PrimaVie™ high potency shilajit extract, which contains a minimum of 60% fulvic acid.

ActeoFIT™: A specialized blend of two herbal extracts, rehmannia glutinosa and cistanche deserticola. Several studies suggest the components of this blend may support exercise performance. One series of preliminary experiments with mice demonstrated an increase in exercise endurance, along with inhibited creatine kinase and improved glycogen stores. This may translate to better performance, along with preserved muscle mass and energy. Another similar set of experiments found hyperplasia and hypertrophy of muscle cell mitochondria, but without damage to the myofibril. This suggests possible benefits for muscle fiber growth, including an anti-catabolic (protein sparing) effect.


Glycine transporters: essential regulators of neurotransmission. Eulenburg V1, Armsen W, Betz H, Gomeza J. Trends Biochem Sci. 2005 Jun;30(6):325-33.

The glycine transport inhibitor sarcosine is an NMDA receptor co-agonist that differs from glycine. Zhang HX1, Hyrc K, Thio LL. J Physiol. 2009 Jul 1;587(Pt 13):3207-20.

Effect of Tongkat Ali on stress hormones and psychological mood state in moderately stressed subjects. Shawn M Talbott, Julie A Talbott, et al. Journal of the International Society of Sports Nutrition 2013, 10:28 doi:10.1186/1550-2783-10-28

Clinical evaluation of spermatogenic activity of processed Shilajit in oligospermia. Biswas TK1, Pandit S et al. Andrologia. 2010 Feb;42(1):48-56.

Rehmannia inhibits adipocyte differentiation and adipogenesis. Jiang L, Zhang NX, Mo W, Wan R, Ma CG, Li X, Gu YL, Yang XY, Tang QQ, Song HY. Biophys Res Commun. 2008 Jun 27;371(2):185-90. Epub 2008 Apr 3.

Effects of Rehmannia glutinosa oligosaccharides on proliferation of 3T3-L1 adipocytes and insulin resistance. Guo XN, Zhang RX, Jia ZP, Li MX, Wang J. Zhongguo Zhong Yao Za Zhi. 2006 Mar;31(5):403-7.

Effects of Cistanche deserticola Y.C. Ma on serum creatine kinase and ultrastructures of skeletal muscles in mice. Han LC, Hou JF. Phytother Res. 2009 Jul 16.

Recommended dosage

As an adult dietary supplement, take 1-2 servings daily. Test Factor may be combined with other molecular Nutrition products such as X-Factor or Peak Beta+ for enhanced results.*


KEEP OUT OF REACH OF CHILDREN. Do not use if safety seal is broken or missing. Do not use if you are pregnant or nursing. If you suffer from any medical condition or are taking medication, consult a healthcare professional before using this product.

Store in a cool, dry place.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, or prevent any disease.


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