ISA-TEST GF , 120 Capsules

Now With Somatrin
Helps Support Normal Hormone Ratios*
7.5  out of 10  (57 Reviews)
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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
57 Ratings
Verified Buyer Rating
12 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.
Mar 29, 2018
Verified Buyer

The old formula was excellent, the new formula not only does not work for me, it also makes me feel bad, Very bad.

Jan 30, 2016
No written review.
Mar 26, 2015
Verified Buyer
No written review.
Feb 01, 2015

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.

Jan 02, 2015

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

Oct 05, 2014

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.

Sep 04, 2014
No written review.
Aug 24, 2014
Verified Buyer

Ever since starting to take this at night, I have never had a better nights sleep. Even though I only get about 4-5 hours of sleep a night, when I take this is feel like I got 8. You wake up refreshed and energized even on only little sleep.

Jul 23, 2014
Verified Buyer

Just like all the other test supplements I've tried. Went 8 weeks like it said...nothing.

Jul 15, 2014

Just like Bio Gro, i have used isa test 2x. I didn't do a review the first time because I didn't have the best diet going on, I was either only having 1 meal a day with 2-3 protein shakes or I was eating a bunch of junk. This time, the 2nd time I was doing a somewhat clean bulk. I started on a strict diet with one cheat day in the week but than I got some news and than it was more of a IIFYM type of diet. So before I start the review I gotta say that I was stacking this with Morph, Bio Gro and PWR, doign the Bio Gro Hyper Growth program that iSatori developed.. ok here we go. Changes on my body: While I was doing a clean bulk I noticed that my shorts were getting a bit looser, also noticed my legs were getting bigger and other people told me that my chest, arms and shoulder were getting bigger, but the funny thing was while on isa test for a month and doing the Bio Gro Hyper Growth program I only did shoulders twice for the whole month I thought I would be weak but I had great workouts on those 2 shoulder days. Can't say much for abs cuz like I said after the news I was just eating whatever fit my macros. Hard ons: lol. Yes I gotta talk about this. I would wake up in the middle of the night because of either 1 I had to pee and i had a hard on which made it difficult to pee cuz well when you are half asleep and you got a hard on its hard to pee lmao. 2 I would wake up in the middle of the night when i would try to turn to the other side and i had a hard on and it would hurt cuz i be turning with my stomach down instead of up and my whole body be on top of it lol. 3 i would wake up almost every day with a hard on. 4 I'm already ***** by nature but I would get many random hard ons, specially at the gym... if a girl be exercising in front of me or i be looking for too long at her boom i be pitching a tent. I wish i had a gf while taking Isa Test, she would had loved me even more! lol Strength: this is the hard part. I know a test booster is suppose to give me that extra strength that I now lack because I'm no longer in my teens and have all that strength i used to but i thought that the strenght i got from ISA TEST was not enough for me to say "This was amazing!" Like I mentioned in the beggining I was doing the Hyper Growth program by iSatori that had me increasing the weight on my bench by 5 pounds every week and 10 pounds on my squats every week. I did just that. And after 4 weeks my bench press went from 175 pounds for 6 reps to 195 for 6 reps. Squats went from 245 pounds for 6 reps to 295 pounds for 8 reps. I'll be honest, I didn't believe I could get my squats to 295 pounds for 8 reps and say that I could had gone heavier after a month. I'm happy with my bench going up 20 pounds as well but it wasn't as easy and I struggled every week when i had to add 5 more pounds. This was one of the few times in my life where I went outside of my comfortable zone and said fock it i'm going to increase the weight every week on every exercise. I be bar curling 80 pounds, rowing 185 in the seated cable and doing heavy a$$ pulldowns. So could this increase in my strength and weights be because of Isa Test alone or because I finally decided to push myself harder? I really don't know because I had friends who increased their bench and squat by going a bit heavier every week and only using a multi vitamin and pre workout. So its hard for me to say that I got this strong because of isa test and hard to say that i got this strong because i pushed myself every week, or a combination of both. Either way I'm happy! how could I not be? I always wanted to get my squats to 300 pounds and now I'm here! I plan on using Isa Test again. YES for at least 8 weeks and using Isa Test alone with only a multi vitamin and maybe a pre workout every once in a while. This will only happen next year but I will update this when I run it again.

Jul 03, 2014

Not my most favorite product.. Arguable not worth the results or lack there of for the price to be paid for it in my honest opinion. Easy to take, and the 'manly' effects are noticeable though. 6.5/10

May 05, 2014

! I have to say that the results have been great! Two months ago was pushing about 1 to 2 reps at 315 on bench. Now pushing out 4 reps at 345. Same with incline. Been topping out at 225 .. hit 245 first set for five last week. List goes on. The muscles have felt full. They feel nice and dense, and well this is a product well worth the investment and time. However...yes there is a but! Do not stack alone and you need to run a full 8 weeks and take 4 weeks off. For me my stack was iSa-Test, Bio-Gro, and creatine. The last 20 days of just combining the iSa-Test and Bio-Gro have been phenomenal. As we all know, well those that are trying to add more mass and even those that are trying to lose and add muscle, the key is getting a great work out in. Not only that but also pushing yourself to grow. By using these two I was able to push myself harder and recover faster. Again a great thank you for the opportunity to log a great product! iSatori has a great team with a great product. And in my other log I said this...It is great to see an active CEO/Owner be involved and taking note of what people are saying about the products they are designing!

Apr 22, 2014

I logged a bottle of Isa-Test which ran for roughly 4 weeks. In those 4 weeks, I saw an increase in weight for all my lifts. i was also able to get over plateaus for my bench, press, and curls. I was also able to achieve PR's for squat, rows, shrugs, skulls, CGBP, press, and curls. Another great effect was the quality of sleep i was able to get. Long, deep sleep throughout the month. The extra aggression in the bedroom was also noticeable. I will definitely recommend to anyone who asks about a test booster.

Apr 05, 2014

This product is put together by a good team at Isatori, I have been impressed with a lot of their products! This is no different, this product I took at 4 caps for about 2 weeks, and noticed an increase in sleep quality and when taking it at 5 caps sleep was even a little bit bettter, but when increased to 6 I was knocked out can sleep through anything woke up feeling refreshed. This was the biggest thing I noticed with this, I feel like with long term use on this sleep, recovery and strength will go up! Another good product from the isatori line

Jan 03, 2014

in my opinion its the first test booster Ive used and its the only one I will use. After all it works and the directions are simple, the ingredients arent mumbo jumbo. I stick with what works

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Helps Support Normal Hormone Ratios*

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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