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Panthera Primal Test Review

According to the website, Panthera Primal Test has a “clinically confirmed vasodilator” and “nature’s most expensive, powerful testosterone booster.” Intrigued? I certainly was.

Vasodilators increase blood flow, strengthen erections, promote oxygen and nutrient delivery, and speed recovery.

Powerful testosterone boosters stimulate the body to produce more testosterone, which builds muscle, burns fat, increases libido, and improves sexual function.

Now you can see why I was so intrigued by the claims. However, I decided to do a background check, rather than take the claims for face value.

What’s Inside Each Capsule?

After reading the initial claims, I expected to find never-before-seen ingredients in Panthera Primal Test. But these ingredients are used in almost every testosterone supplement.

Let’s dig deeper though and see if this manufacturer knows something others don’t…

Niacinamide (50 mg) – Niacin and niacinamide are forms of vitamin B3. They have some similarities, but also several differences. For example, niacin lowers cholesterol, widens blood vessels, and increases blood flow. Niacinamide does not produce the same results. But it may treat osteoarthritis, depression, and anxiety.

Long Jack Extract (200 mg) – Panthera Primal Test uses a patented long jack extract called LJ 100. Supposedly, 7 human clinical trials proved LJ 100 increases DHEA and free testosterone, and decreases sex hormone binding globulin (SHBG). The manufacturer gets even more specific by claiming LJ 100 increased free testosterone by 37-70% “in all subject test groups.”

So, where are these studies? does not provide a single title, author name, date, or reference. I searched more than 20 databases and did not find even one study with LJ 100. There were 7 studies that explored long jack extract’s effects on testosterone, but 6 used rats.

In the seventh study, men with low testosterone took 200 mg long jack extract for 1 month. Before the study, only 35% of men had normal testosterone levels. After the study, this percentage increased to 90%.[1]

L-Arginine HCL (1,000 mg) – Nitric oxide is synthesized from L-arginine and released into the blood stream.[2] Once there, nitric oxide sends signals telling the blood vessels to relax and widen. As blood flow increases, erections, cardiovascular health, nutrient and oxygen delivery, and recovery improve.

Although researchers agree L-arginine is a nitric oxide precursor, some question if L-arginine supplements produce the same results as naturally-occurring L-arginine.

The only other ingredients are gelatin (to make the capsules) and magnesium stearate.

Is Panthera Primal Test Safe and Natural?

Panthera Primal Test is natural because it doesn’t include actual testosterone or other hormones. Instead, long jack extract is supposed to naturally promote and enhance testosterone production within the body.

Not only is the method natural, the results — if Panthera Primal Test works — are natural and safer. Consuming or injecting real testosterone is potentially dangerous and may cause serious side effects. However, there is very little danger from the testosterone your body naturally produces.

As far as the formula goes, medical experts say niacinamide and L-arginine HCL are safe for most people. Long jack extract is commonly used in testosterone supplements, but researchers haven’t determined if it’s safe or not.

Niacin is known for causing flushing, tingling, itching, and redness of the skin. Since niacinamide does not widen blood vessels, it does not cause these side effects. It may cause significant sweating though.

Directions for Use

The recommended daily dosage is 2 capsules a day. With this dosage, you get the quantities listed above. The bottle holds 60 capsules or 30 servings.

The manufacturer suggests taking the capsules before bedtime. But many testosterone supplements with similar ingredients are taken in the morning or before a workout.

Panthera Primal Test is designed for people age 16 and older.

Do not take this supplement if you have a medical condition or take medication. Stop using it if you experience any side effects.

Buying Panthera Primal Test

This testosterone supplement is only sold online. Sometimes, Panthera Labs distributes its products through The Vitamin Shoppe stores, but Panthera Primal Test isn’t currently offered.

• – $49.95
• – $39.95
• – $30.49

The official website offers free shipping on orders over $99; otherwise the cost is around $3.95. It doesn’t say what shipping method is used or how long delivery takes.

On, standard shipping takes 3-5 business days and costs start at $5.98.

Most orders are shipped same or next business day by Standard shipping is $5.95, regardless of quantity or weight. Orders are shipped via UPS or USPS and delivery takes about 1-5 business days.

Returning Panthera Primal Test doesn’t provide any details about returns. You must contact customer service to get the information. The toll-free phone number is 855-777-4625. Business hours are Monday through Friday 9am – 5pm Eastern Standard Time.

Unused and used items may be returned to within 45 days of purchase. If the product is used, you can exchange it for a replacement product or store credit. Unused products have the option of receiving a refund, a replacement, or store credit. takes back used products for 30 days as long as 25% of the original content remains. You get a full refund for the purchase price, but shipping and handling costs are nonrefundable.


The ingredients in Panthera Primal Test just aren’t that impressive. L-arginine is a vasodilator, which may improve several health aspects. One study showed long jack extract increases testosterone. But I couldn’t find the 7 human clinical studies the company claims to have. And why don’t they provide references to support this important claim? I don’t know.

I’m doubtful long jack extract is the “most powerful testosterone booster.” But, on a more positive note, each serving contains the clinically tested dosage — 200 mg.

I don’t recommend buying Panthera Primal Test because there are many testosterone supplements with better formulas and more research.


[1] Tambi, M, M Imran, and R Henkel. “Standardised water-soluble extract of Eurycoma longifolia, Tongkat ali, as testosterone booster for managing men with late-onset hypogonadism?” Andrologia. 44. (2012): 226-30.

[2] Andrew, PJ, and B Mayer. “Enzymatic function of nitric oxide synthases.” Cardiovascular Research. 43.3 (1999): 521-31.

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