ISA-TEST GF, 120 Capsules

Now With Somatrin
Helps Support Normal Hormone Ratios*
8.4 out of 10 (66 Reviews)
1 Size
120 Capsules
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Product Overview

iSatori ISA-TEST GF. #1 High-Performance Test-Booster

Build Muscle*

Elevate Strength*

Increase Performance*

ISA-TEST GF is a precise combination of natural ingredients clinically shown to support an increase in natural testosterone within normal range and a reduction in the "female-hormone" estrogen.* It's designed to help promote noticeable gains in strength, muscle mass, as well as improved sexual drive and performance.* Adding ISA-TEST GF into your intense training program is a surefire way to help increase testosterone and support performance in and out of the gym.

With a clinically studied formula and strict manufacturing guidelines, you can be confident that ISA-TEST GF delivers on its promise of both potency and purity. ISA-TEST GF is truly the platinum standard in testosterone and anti-estrogen augmentation.*

PRODUCT Competitor 1 Competitor 2 Competitor 3
Clinical Study on Finished Product YES NO NO NO
Includes Somatrin™< Growth Factor Support YES NO NO NO
Includes El-450™ Anti-Estrogen Complex YES NO NO NO
Once-A-Day Dosing YES YES NO 2x/DAY NO 2x/DAY
Full 30-Day Supply YES YES YES YES
Easy Swallow Capsules YES NO - Tablets NO - Tablets YES


How does the Rapid Bio-Diffusion Delivery system work?

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.

How does the Rapid Bio-Diffusion Delivery system work?

With the guidance of a leading pharmaceutical specialist and medical doctor, iSatori developed an exclusive Rapid Bio-Diffusion Delivery™ technology, which uses a sophisticated "micro-particlization" process, so it starts working from the very first dose to help the body's natural testosterone production.* Within 30 minutes of taking this supplement, you'll begin to "feel" it going to work… an instant rush of testosterone… because of its fast absorption and increased potency.* No other testosterone formula contains this state-of-the-art delivery technology. You can find it only in ISA-TEST products.

What does the research say about ISA-TEST GF, and is it safe?

The efficacy of its incredible testosterone-enhancing and estrogen-reducing effects were scientifically documented by researchers Rob Mendel, PhD, and Dr. Tim Ziegenfuss of the Ohio Research Group of Exercise Science and Sports Nutrition! The conclusion of the study, after just three weeks (and it works on a progressive basis), Free or usable testosterone levels increased and estrogen levels decreased. Equally important, all of the subjects' health markers (e.g., liver, kidney, cholesterol, blood pressure, etc.) were normal and healthy. So, we know, without a reason of a doubt, it works fast and is safe.*

Do I need to "load" or "cycle"?

"Loading" or "cycling" is not necessary. And because it is an herbal-based supplement and it won't shut down your body's own production of testosterone, you don't need to cycle it and can use it for extended periods of time.* It is, however, always a good idea to take a break for one to two weeks, after using any kind of supplement after 12 weeks.

Ratings & Reviews

Overall Rating
66 Ratings
Verified Buyer Rating
15 Ratings
By clicking the button above, you agree to entering the Reviews section. Products in the Store are not intended to diagnose, treat, cure, or prevent any disease.
No written review.
Verified Buyer
No written review.

I can't say I noticed "amazing results" but i will say that I did feel great in the gym while taking this product, so if someone told me they were thinking about it, I would not stop them. I may try it again in the long run. I don't have much negative, just relatively neutral about it.


Better Recovery, Better Strength, Better Sleep!!! This will help get that extra bit needed when it counts.


Very noticeable improvements in recovery with GF. The sleep you will have is phenomenal. I consistently had very deep and restful sleep, and felt like I woke up from a dream nearly every morning. Works very well in combination with Isa-Test DA3.

† This price is the retail price for this product found at one or more retail websites in the last 30 days. The price may not include shipping cost, tax, sale or promotional prices, or discounts such as member pricing. Prices may change. verifies this price every 30 days.
120 Capsules
120 Capsules
30 Servings | $1.20 Per Serving

What's in iSatori ISA-TEST GF

Serving Size: 4 Capsules
Servings Per Container:30
Amount Per Serving % DV
Vitamin C (As Ascorbic Acid) 25 mg 42%
Vitamin B6 (Pyridoxine HCL) 7 mg 350%
Magnesium (As Oxide & Aspartate) 300 mg 75%
Zinc (As Zinc Aspartate) 20 mg 133%
ISA-TEST™ GF a Proprietary Blend Containing: 1,714mg *
Tribulus Extract, (Tribulus Terrestris L.) (aerial parts), (60% total saponins, 20% Protodioscin), Epimedium Extract, (Epimedium sagittatum and Epimedium brevicornum)(leaf), (standardized for 10% icariin), EI-450™ Estrogen Inhibitor Citrus bioflavanoid complex, (Citrus sinesis) (peel & fruit), (50% hesperidin), Tongkat Ali Extract 20:1, (Eurycoma longifolia)(root), Ajuga turkestanica extract 10:1 (stem and leaf), Grape seed extract, (Vitis vinifera L.) (seed) , (standardized for 95% proanthocyanidins), Fenugreek Extract, Fenugreek Extract (trigonella foenum-graecum L.) (seed), (standardized for 50% fenuside saponins), Rhaponticum carthamoides extract (root), (standardized for 5% Ecdysterones)
SOMATRIN™, a proprietary blend containing: 325mg *
Velvet bean extract, (Mucuna Pruriens) (Seed), Nettle extract 30:1, (urtica dioica)(root), Melatonin, (N-Acetyl-5-Methoxytryptamine)
ISAFLOW™, a proprietary blend containing: 100mg *
Butchers Broom Extract, (ruscus aculeatus)(root) (standardized for 20% sterolic heterosides), Hesperidin Methyl Chalcone, (citrus sinensis)(fruit)(90% hesperidin)
* Daily Value Not Established
Other Ingredients.
Gelatin, Magnesium Stearate, Silicon Dioxide, Microcrystalline Cellulose, Titanium Dioxide, FD&C Red #40, FD&C Blue #1, FD&C Red #28.

Directions For ISA-TEST GF: As a dietary supplement, take 4 capsules with a full glass of water one hour prior to training. 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.

Warnings: KEEP OUT OF REACH OF CHILDREN. Women should not use this supplement. Not intended for individuals under the age of 18, unless instructed by a doctor. Use only as directed. Do not exceed suggested daily dose. If you are taking medication or have a medical condition, consult a physician before using this product. Discontinue use 2 weeks prior to surgery. If you or your doctor have any questions about this product, please call 1-866-688-7679. WARNING for California residents only: This product contains substances known to the state of California to cause cancer and birth defects and other reproductive harm. Do not use if packaging has been tampered with. STORE IN A COOL DRY PLACE. AVOID EXCESSIVE HEAT.

* 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.
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