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Get the muscle-building results you want by manipulating three key hormones: testosterone, growth hormone factors, and estrogen. If you can increase test and GF while blocking estrogen, you’re looking at potent increases in size and strength! ISA-TEST will manipulate all three, with no adverse effects!

Brand: iSatori
SKU: 883488005077

Get the muscle-building results you want by manipulating three key hormones: testosterone, growth hormone factors, and estrogen. If you can increase test and GF while blocking estrogen, you're looking at potent increases in size and strength! ISA-TEST will manipulate all three, with no adverse effects!

Key Features:

  • Increases Testosterone Production, clinical trials show an increase in Free Testosterone
  • Includes Somatrin: raises anabolic growth factor levels
  • P-450, unique to ISA-TEST, reduces Estrogen levels
  • Increased muscle size, more strength, and supports sexual health

Take a look at the Ingredients:


Somatrin is an exclusive ingredient in ISA-TEST GF, that studies show can increase growth hormone factors when taken prior to training (see below).

Meeking, DR, et al., Exercise-induced GFsecretion is enhanced by the oral ingestion of melatonin in healthy adult male subjects, Eur J Endocrinol. 1999 Jul;141(1):22-6.

Testofen (Trigonella Foenum Greacum)

Testofen, known mostly in Europe, contains several potent anabolic compounds, including Protodioscin and Steroidal Saponins, each one has been shown to increase testosterone levels, which in turn will increase muscle size and libido.
Research has shown that most of these steroidal saponins are saponin glycosides. Fenuside, a group of saponin glycosides exclusive to Testofen and produced naturally only by Testofen, have been standardized for maximum strength.

Testofen has been shown to have actions similar to Testosterone because it binds to Testosterone receptor sites.
The critical thing is that Testofen will do this without turning your own natural production of Testosterone off.
Testofen – one of bodybuilding's best-kept secrets!

Tribulus Terrestris

This herb has origins in Bulgaria. Tribulus helps your body naturally increase testosterone levels and maintain levels that are within the normal range.

Eurycoma longifolia (or, Longjax).

Animal research has shown that Longjax can increase test levels with no side effects.

Zinc/Magnesium (Zinc Aspartate, Magnesium Aspartate)

This mineral combination has two studies behind it.

Consistent training can cause a depletion of vital minerals in the muscle cells, such as zinc. Zinc also plays a role in your ability to get a good night's sleep. This is important as your body releases many more hormones when you sleep well, namely testosterone and growth hormone, two of your body's most important natural anabolic hormones. In fact, testosterone secretion in men happens while we sleep, and peaks in the early morning hours. Supplementing with zinc helps replace levels depleted due to training and also supplies enough for a good night's sleep.

As well, zinc and magnesium combined have been shown to reduce levels of the hormone cortisol, a catabolic hormone released in response to stress, which includes the stress of intense training sessions.

Zinc and magnesium deficiencies are common in the general public including bodybuilders, weight trainers, and athletes, for this reason, zinc/magnesium supplementation has become popular.


Ajuga, a herbal remedy used in Central Asia for several thousand years, supports strength and stamina under exhausting conditions, such as intense weight training.


A plant that grows throughout eastern Siberia. Currently, Rhaponticum, a plant from Siberia, is found in the Russian Pharmacopoeia as improving training performance, as well as supporting increased work efficiency while under stressful conditions and promoting post-workout recovery.

P-450 Hesperetin

[(S)-2,3-dihydro-5,7-dihydroxy-2-(3-hydroxy-4- methoxyphenyl)-4-H-1-benzopy-ran-4-one]) Hesperetin is a citrus bioflavonoid found in oranges and lemons that has potent antioxidant properties


Or horny goat weed, as it's more commonly known, epimedium grows in both Asia and the Mediterranean region. It's commonly used to help treat fatigue.

Grape Seed Extract

Containing the active compounds oligomeric proanthocyanidins (or, OPC). OPC has demonstrated potent antioxidant and cardio-supporting properties.

Rapid Bio-Diffusion Delivery Technology

Exclusive to iSatori Technologies, Rapid Bio-Diffusion Delivery uses a 'micro-particlization' process. This means Isa-Test begins to increase your testosterone levels right from the first dose!


Supplement Facts

26 servings per container
Serving size
4 Tablets
Amount Per Serving
% Daily Value
Vitamin B6 (Pyridoxine HCl)
7 mg
Vitamin C (As Ascorbic Acid)
25 mg
Zinc (As Zinc Aspartate)
20 mg
Magnesium (As Oxide & Aspartate)
300 mg
Isa-Test, A Proprietary Blend Containing
1,814 mg
TESTOFEN (Trigonella Foenum Graecum Extract Standardized For 50% Fenuside Saponins), Tribulus Terrestris Extract (60% Total Saponins / 20% Protodioscin), Eurycoma Longifolia 20:1 Extract, Epimedium Sagittatum & Brevicornum Extract (Standardized For 10% Icariin), P-450 Anti-Aromatase [(S)-2,3- Dihydro-5,7-Dihydroxy-2-(3-Hydroxy-4- Methoxyphenyl)-4-H-1benzopy-Ran-4-One], Ajuga Turkestanica & Rhaponticum Carthamoides Root Extract (Standardized For 11,20 Dihydroxyecdysone, 20-Beta-Hydroxyecdysone And 25-Deoxy-20- Hydroxyecdysone), Grapeseed Extract (95% Oligomeric Proanthocyanidins) Isaflow Microcirculation/nutrient Delivery System [Specially Prepared Hesperidin Methyl Chalcone, Ruscus (20% Sterolic Heterosides) & Vitamin C Complex]
325 mg
Nettle Extract (95% Divanillyltetrahydrofuran), Mucuna Pruriens (Standardized For 15% L-Dopa), N-Acetyl-5-Methoxytryptamine (Melatonin)

Daily Value not established.

Other Ingredients:

Gelatin Capsule, Microcrystalline Cellulose, Magnesium Stearate, Silicon Dioxide, Titanium Dioxide, FD&C Yellow #6, FD&C Blue #1, FD&C Red #40.
P-450 Estrogen Inhibitor Is A Registered Trademark Of ISatori Technologies, LLC.
P-450 Estrogen Inhibitor is a registered trademark of iSatori Technologies, LLC. Testofen is a trademark of Gencor Pacific, Inc. Somatrin is a registered trademark of iSatori Technologies, LLC.

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Manufacturers continually change product specifications, images, descriptions, ingredients and pricing. While we try our best to keep all product information up to date, it may not reflect the latest information available from the manufacturer. Product packaging may contain different or additional information, including the product description, nutritional facts, ingredients, allergens and other information. Always read labels, warnings, and directions and other information provided with the product before using or consuming a product. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition. For additional information about a product, please contact the manufacturer. Policies, pricing and item availability are subject to change without notice, and we reserve the right to limit quantities. Prices displayed are subject to final approval at the time of order fulfillment. While we do our best to make sure that all information displayed is accurate, we are not responsible for typographical errors or technical inaccuracies.

As a dietary supplement, take 4 capsules with a full glass of water one hour prior to exercise. On non-training days, take 4 capsules one hour prior to bedtime. Take with or without food. FOR BEST RESULTS, use continuously for a minimum of 8 weeks.



Use only as directed. Do not exceed the suggested daily dose. Not intended for individuals under the age of 18, unless instructed by a doctor. Women should not use this supplement; so obviously, do not use this product if you are pregnant, nursing, or are contemplating pregnancy. If you have a medical condition or are taking any prescription medications, please consult your physician first. WARNING: For adult use only at bedtime. This product is not to be taken by pregnant or lactating women. If you are taking medication or have a medical condition, consult a physician before using this product. Do not use in conjunction with alcoholic beverages, when driving a vehicle, or while operating machinery.

Additional information

Weight 5.1 oz
Dimensions 5.5 × 2.5 × 2.5 in