Direct Digital released their first testosterone supplements Nugenix in late 2012. It is supposed to increase the following:
• Muscle mass
If Nugenix contains the right ingredients, these benefits are well within consumers’ reach. But “effectiveness” is only one factor I consider before buying a testosterone supplement.
Can You Try Nugenix Risk Free?
Even after doing the research and reading the reviews, buying Nugenix is a gamble. Sure Nugenix may work for some, but what if it doesn’t work for you?
Direct Digital does not have a money back guarantee, but they do offer a free trial. You pay shipping and handling ($4.99) and the company sends you a 14-day supply.
The company allows 4 days for Nugenix to ship and then the 14-day free trial starts. So, the trial really lasts 18 days after the original purchase date.
If you do not cancel within 18 days, you will be charged $74.98. You will also be enrolled in Direct Digital’s monthly auto-ship program. I’m usually skeptical about these programs because so many consumers complain about them. But this program has one advantage: all auto-ship products are covered by a 30 day money back guarantee.
To cancel the free trial or auto-shipping, call 1-855-714-3234.
The Researched Ingredients
Nugenix contains 6 ingredients, but only 4 are clinically proven:
Zinc. Zinc-deficient men were given zinc supplements. After 6 months, their testosterone levels increased to normal. Another study showed that besides increasing testosterone, zinc also boosts sperm count.
Testofen Fenugreek Extract. For years, fenugreek was believed to increase testosterone and inhibit aromatase. In 2010, researchers found evidence to support this theory. 30 men consumed fenugreek or a placebo every day. Eight weeks later the fenugreek group had more total and free testosterone, and less body fat.
L-Citrulline Malate. Scientists say L-Citrulline converts into Arginine, which is more bioavailable than the Arginine in supplements. By increasing Arginine, L-Citrulline increases nitric oxide and enhances blood flow. In one study, L-Citrulline was shown to improve erections.
Tribulus Terrestris. Most Tribulus studies involve animals. There are a few human studies, but these are small and poorly designed. The studies involving animals show Tribulus boosts testosterone and increases libido.
The Proprietary Blend Problem
Nugenix contains a 5 mg zinc dosage, which is too small to increase testosterone. The Testofen, L-Citrulline, and Tribulus dosages are hidden in a proprietary blend.
Direct Digital and many other companies use proprietary blends. It helps them by hiding their formulas from competitors. But proprietary blends present problems for consumers.
First, proprietary blends prevent consumers from seeing if effective dosages are used. During studies, specific dosages were used for Nugenix’s 4 researched ingredients. Unless Nugenix contains these dosages, it will not be effective.
Second, proprietary blends prevent consumers from seeing if safe dosages are used. Nugenix contains safe ingredients. However, these ingredients may be unsafe or cause side effects if unsafe dosages are used.
Third, proprietary blends do not inspire confidence. Nugenix is not a cheap supplement. Before I spend any money, I want to know exactly what I’m getting. I want to know Nugenix contains safe, effective dosages and ingredients. Because Direct Digital keeps dosages a secret, I don’t feel confident buying Nugenix.
When companies use proprietary blends, I turn to customer reviews. If there are enough positive reviews, my confidence is restored.
Where to Find Customer Reviews
I found the most Nugenix customer reviews on Amazon.com and GNC.com. Unfortunately, what I found actually makes me less confident in Nugenix. Here are the average ratings users gave Nugenix:
• Amazon.com: 2.6 out of 5 stars from 17 users
• GNC.com: 3 out of 5 stars from 22 users
Based on these reviews, Nugenix may be a safe testosterone supplement. There was no mention of side effects, allergic reactions, or health issues.
However, the majority did not get results from Nugenix. In fact, several people said they didn’t feel anything after taking Nugenix. A few said the supplement actually decreased their libido and energy.
Is Direct Digital a Reliable Company?
I’m familiar with Direct Digital because they make several popular products. So I was very surprised by my Nugenix research. Direct Digital doesn’t always use proprietary blends. One example is Instaflex; a joint supplement produced by Direct Digital. The product label shows every ingredient dosage.
Also, the Better Business Bureau gives the Instaflex company an A- rating. The main reason BBB gives the company such a high rating is because they address and resolve all customer complaints.
In my experience, Direct Digital is a reliable company. But it seems making testosterone supplements is not their strong suit.
Should You Buy Nugenix?
Nugenix retails for $69.99 on Nugenix.com, Amazon.com, and GNC.com. The lowest price I found is $55.99 on LuckyVitamin.com. This is how much the best testosterone supplements cost. But it’s too much to pay for Nugenix. So, I don’t recommend buying it.
I don’t know enough about how safe and effective Nugenix’s formula is. According to customer reviews, the product may be safe, but it’s not very effective.
You could try it risk free for 14 days, but this may not be enough time. The few users who saw improvements said Nugenix takes several weeks to start working. Save your money for the best testosterone supplements.
 Prasad, A, C Mantzoros, et al. “Zinc status and serum testosterone levels of healthy adults.” Nutrition. 12.5 (1996): 344-8.
 Netter, A, R Hartoma, and K Nahoul. “Effects of zinc administration on plasma testosterone, dihydrotestosterone, and sperm count.” Archives of Andrology. 7.1 (1981): 69-73.
 Wilborn, C, L Taylor, et al. “Effects of a purported aromatase and 5a-reductase inhibitor on hormone profiles in college-age men.” International Journal of Sport Nutrition and Exercise Metabolism. 20.6 (2010): 457-65.
 Cormio, L, M De Siati, et al. “Oral L-citrulline supplementation improves erection hardness in men with mild erectile dysfunction.” Urology. 77.1 (2011): 119.22.
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 El-Tantawy, WH, A Temraz, and OD El-Gindi. “Free serum testosterone level in male rats treated with Tribulus alatus extracts.” International Braz J Urol. 33.4 (2007): 554-8.