Test 3X SX-7 Black Onyx

Test 3X SX-7 Black Onyx , 120 Capsules

3-In-1 Testosterone Boosting Formula*
Optimizes Normal Testosterone and Estradiol Levels
8.4  out of 10  (46 Reviews)
1 Size
120 Capsules
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Price: $86.99  ($2.90 / Serving)
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Product Overview

MusctleTech Bottle


Test 3XTM SX-7® Black Onyx®

Subjects increased testosterone by over 40%*1

Optimizes normal testosterone and estradiol levels*

Reduces cortisol by 14.5%*1

The Most Powerful & Hardcore 3-in-1 Testosterone Boosting Formula*

Test 3XTM SX-7® Black Onyx® is the most advanced testosterone enhancing pill on the market today with a powerful 3-in-1 formula. How many testosterone boosting pills on the market are actually backed by a single human clinical trial? Not many!*

Test 3XTM SX-7® Black Onyx® features three powerful ingredients backed by separate, human clinical trials that are actually shown to boost testosterone, decrease estradiol or reduce cortisol.*1

Male model working out
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Test Subjects Increased Testosterone by Over 40%!*1

Test 3XTM SX-7® Black Onyx® features a precise 3.12g clinical dose of D-aspartic acid. D-aspartic acid (DAA) is naturally occuring amino acid found in the neuroendocrine tissues of humans that has been shown to increase testosterone by over 40% and increase luteinizing hormone by over 30% while staying within the normal healthy range.*1

In one study published in Reproductive Biology and Endocrinology, 23 men were given the same daily dose of D-aspartic acid in Test 3XTM SX-7® Black Onyx® for 12 days. Researchers found that after 12 days, subjects had increased luteinizing hormone by over 30% and had increased serum testosterone levels by 40%!*1

D-aspartic acid utilizes your body’s very own internal mechanisms to raise testosterone, which means there is no feedback inhibition involved.*

1 - Levels within an already normal range.

Boost Free Testosterone in Just 7 Days*

Test 3XTM SX-7® Black Onyx® is also formulated with a powerful and concentrated dose of boron that is shown in human clinical research published in the Journal of Trace Elements in Medicine and Biology to increase free testosterone and decrease estradiol in as few as 7 days.*1

Free testosterone is the most active form of testosterone and is critical to initiating the strength-building process. Most of the testosterone (approx. 98%) in your blood attaches to two proteins: albumin and sex hormone binding globulin, or SHBG. Some testosterone is unattached to proteins, or “free”. This leaves precious little free testosterone! Because free testosterone is the most bioavailable for your body to use, having optimal levels of it makes it critical for anyone looking to get bigger and stronger.*

Naghii et al., 2011. Journal of Trace Elements in Medicine and Biology 25:54-58.

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Only about 2% of your body’s testosterone is the biologically active free testosterone. Test 3XTM SX-7® Black Onyx® contains a clinical dose of boron to boost free testosterone levels!*

Decreases Cortisol by 14.5%*1

The superior Test 3XTM SX-7® Black Onyx® formula also contains the cutting-edge ingredient Withania somnifera, which is shown to reduce cortisol by an astonishing 14.5%.*

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Sensoril® Ashwagandha (Withania somnifera) is a powerful adaptogen that has been scientifically shown to significantly lower serum cortisol levels. In a double-blind, placebo-controlled human study published in the Journal of the American Nutraceutical Association, researchers gave 19 subjects 125mg of Sensoril® Ashwagandha (Withania somnifera) each day. This is the exact type of Withania somnifera delivered in Test 3XTM SX-7® Black Onyx®, and also the exact same dose. After two months, researchers measured stress hormones in the body and found that cortisol levels decreased by 14.5%!*

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When cortisol levels increase from frequent, intense training, testosterone levels can drop. TEST 3X SX-7™ BLACK ONYX contains withania somnifera that lowers cortisol by 14.5%.*

High levels of cortisol can hinder muscle development and decrease muscle tissue. This is because cortisol functions increases the breakdown of protein facilitates their conversion into forms that can be used as energy sources by your body, and prolonged cortisol elevation can lead to muscle breakdown.*

Auddy et al. 2008. Journal of the American Nutraceutical Association. 11(1):50-6.
Brillon et al. 1995. American Journal of Physiology – Endocrinology and Metabolism. 3(1):E501-13.


Each batch of new Test 3XTM SX-7® Black Onyx® undergoes strict quality control and is third-party tested and verified to ensure that each bottle of Test 3XTM SX-7® Black Onyx® has the highest purity, quality and consistency.

Ratings & Reviews

Overall Rating
46 Ratings
Verified Buyer Rating
2 Ratings
By clicking the button above, you agree to entering the Bodybuilding.com Reviews section. Products in the Store are not intended to diagnose, treat, cure, or prevent any disease.
Aug 23, 2018

Good product

Aug 07, 2018
Verified Buyer

This is a real good test booster. It is extremely strong. I have not finished my current bottle only because 3 weeks in seems like you experience extreme acne. The only thing I have had that came close to this was MHP Sarm X back in the day, loved the stuff but thing is I don't mind alittle bit of acne but when you start getting acne on your eye lids and lips, I just had to get off for a week. I might try again but if it get same symptoms then it's not worth it to me. Also broke out in rash on my arm. Was on a product also with omega 3 6 9 to help with acne but seem like it didn't work.. End result, it's a good product, I may give one more run in a month or 2.. Are there just as good products at lower price points yes

May 05, 2018
Verified Buyer

Took as directed, and felt no difference. I do intense workouts 5 days a week so I would’ve noticed a change, but none. I felt skeptical spending this kind of money on a 30- day supply, and I was right.

Apr 22, 2018
No written review.
Jan 09, 2018

Can anyone tell me how can I use?? After meal or after work or some other time

Oct 31, 2017

Great profile for Test Booster, felt awesome while taking this. Great energy, recovery and size gains while taking it. Also felt my mood seemed to be a little better while on it, overall all enjoyed the time while taking this product, recommend to others looking for a test boost.

Oct 26, 2017

This is the most test boosting ingredients you will find in one single product. I felt an amazing amount of overall happiness, energy, libido, and increased recovery time. If you haven't found a test booster yet try this one and you will not regret it.

Oct 25, 2017

Recovery time was a lot faster. My strength increased in the gym. I had more energy through out the day.

Oct 18, 2017

went through about 3 bottle of this the last five months. Considerable amount of increase in energy, slept like a baby and got a little it did seem to loose its edge towards the end of each bottle.

Oct 14, 2017

One of the BEST test products out there. Non proprietary blend bs. I’m sure everyone’s results will be different but for me I was able to notice a spike in my T levels. Will continue to use and hopefully see greater results once I stack it with my workout supplements. But for now. Great product I would definitely recommend

Oct 14, 2017
No written review.
Oct 14, 2017

Love this new label from MuscleTech! This is great to take if you are in between cycles or just need a boost. Great happy feeling while taking these and I can tell the increase in strength gains.

Oct 13, 2017

I received this product from MuscleTech to try out. I stacked it with the Black Oynx Hydroxycut SX-7 Non-Stim, Black Onyx CLA, Apple Cider Vinegar and the Black Onyx SX-7 CLA. Each serving provides an adequate amount of three proven test boosting supplements with additional enhancing elements. I felt I was able to increase weight while using this product and less muscle soreness.

Oct 13, 2017

I have stacked this product with the Black Oynx Hydroxycut SX-7, CLA, Apple Cider Vinegar and the Ultra Carnitine. Gives you that nice pump during your workouts and exercises!

Oct 13, 2017

Great testosterone booster. Love seeing muscletech change it up

120 Capsules
120 Capsules
30 Servings | $2.90 Per Serving

What's in MuscleTech Test 3X SX-7 Black Onyx

Serving Size: 4 Caplets
Servings Per Container: 30
Amount Per Serving % Daily Value
Vitamin B6 (As Pyridoxine Hydrochloride) 3.12 g 156,000%
Folic Acid 200 mcg 50%
Vitamin B12 (As Cyanocobalamin) 1 mcg 17%
Zinc (As Zinc Gluconate) 30 mg 200%
Test Extreme Matrix
D-Aspartic Acid (DAA) 3.12 g
Tribulus fruit extract (As Tribulus terrestris) Standardized for 45% Saponins 250 mg
Boron Citrate supplying 5% boron 200 mg
Ashwagandha root and leaf extract (as Withania somnifera) (Sensoril®) 125 mg
Safed Musli root extract (As Chlorophytum borivillanum) 100 mg
Yacon root (as Smallanthus sonchifolius) 100 mg
Olive Leaf Extract (As Olea europaea) supplying oleuropein 50 mg
† Daily Value not established.
Other Ingredients:
Microcrystalline Cellulose, Coating (Titanium Dioxide, Polyethylene Glycol, Talc), Stearic Acid, Croscarmellose Sodium, Magnesium Stearate, Crospovidone, Silicon Dioxide, Hydroxypropyl Cellulose, Acesulfame Potassium.

Directions For Test 3X SX-7 Black Onyx: Take 1 serving (4 caplets) once daily with water. Do not exceed 1 serving (4 caplets) in a 24-hour period. Read the entire label before useand follow directions provided.

Warnings: Not intended for use by persons under 18. Do not use if pregnant or nursing. Consult a medical doctor before starting any diet or exercise program or if you have a medical condition or are taking any medication. Discontinue use 2 weeks prior to surgery. KEEP OUT OF REACH OF CHILDREN.

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