PhosphaGrow™ SX-7™ | GNC

MuscleTech™ PhosphaGrow™ SX-7™


Item # 802191


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Size: 140 Softgels

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Product Information


Black Onyx™
Contains the only clinically studied & fully dosed form of Phosphatidic Acid
Subjects gained 5.3 lbs. of lean muscle in 8 weeks*
Doubles muscle gains and increases strength by 60%
Boosts mTOR signaling by more than 6 times*

Contains the only clinically studied & Fully Dosed Form of Phosphatidic Acid
PhosphaGrow™ SX-7™ features the purest clinically tested form of Phosphatidic Acid (PA) available - Mediator® PA. During resistance training, your body naturally produces limited amounts of phosphatidic acid, which binds to mTOR, activating the primary signaling pathway for muscle building. PhosphaGrow™ SX-7™ works through the same mechanism, enhancing mTOR to increase protein synthesis and activate anabolic activity.*

Subjects Boosted mTOR Signaling by More Than 6 Times
In a University of Tampa study, pre-clinical research showed that the same phosphatidic acid found in PhosphaGrow™ SX-7™ increased mTOR signaling by over 6 times compared to baseline!*

Subjects Built Significantly More Muscle & Strength
In a separate phase of the same study, Phosphatidic Acid was shown to double muscle gains in test subjects compared to a placebo. These test subjects gained 5.3 lbs. of lean muscle vs. 2.6 bls. in the placebo group. In the same study, test subjects increased their strenght on the leg press by 60% more than the placebo group (114.4 lbs. vs. 71.4 lbs.) in just 8 weeks! But remember, only Mediator® PA is guaranteed for purity and quality through Nuclear Magnetic Resonance Testing. No other source can deliver the same results! Get PhosphaGrow™ SX-7™ today!*

Label (click image to enlarge)


Take 1 serving (5 softgels) once daily. On workout days, take 30 minutes before training. Do not exceed 5 softgels in a 24-hour period. Read the entire label before use and follow directions provided.
Contains Soy Ingredients


For adult use only. Do not use if pregnant or nursing. Consult a medical doctor before use if you have a medical condition or before starting a diet or exercise program. Discontinue use two weeks prior to surgery. KEEP OUT OF REACH OF CHILDREN.

Other Ingredients

Medium Chain Triglyceride Oil, Monoglycerides and diglycerides from Medium chain Triglycerides, Silicon Dioxide, Gelatin, Glycerin, Caramel Color, Purified Water


Do not use if packaging has been tampered with. Store in a cool, dry place (60°F to 80°F).
Distributed by Iovate Health Sciences U.S.A. Inc. 1105 North Market Street, Suite 1330, Wilmington, DE 19801.

Nutrition Facts

Serving Size  5 softgels
Servings Per Container  28

Amount Per Serving     % DV

Phosphatidic Acid Complex 1529mg  0   **
   Mediator® PA (Phosphatidic acid-enriched soy lecithin) Supplying 50% phosphatidic acid (750mg)   **
   Astragalus root powder (as Astragalus membranaceus)   **
   Long Jack root extract (as Eurycoma longifolia)   **

** Daily Value (DV) not established.


4.9 / 5.0
21 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
first week in....
great muscle pump - yes
more strength - no
decreased recovery - no

first week i took it, i actually felt weaker in the gym. there is a thermic effect and i felt hotter and seemed to sweat more when i took it (30 min before). i'm currently off of it and only on creatine (my fav all time supp). and i feel like my old self again. muscles don't feel as pumped though. last week i felt *huge" but at the same time felt more sore (=muscle pump?). i'm not a body builder, just a 53 year old dude in the gym trying to stay strong and gain muscle.
January 30, 2017
6 days in and I can feel and see the muscle gains!! I recommend this product.
February 16, 2016
the results i have had with this is noticeable in only a short amount of time,
cant go wrong with this product
January 13, 2016
great results
i was given a sample of this product to try used it for a month i have since purchased it and will keeping using it. during my time using the sample i recieved i increased my DL from 565 to 575 i now find less resting in between each set.
January 12, 2016
More reps
I had seemed to hit a wall until I started taking PhosphaGrow. Now I've gotten back to slowly increasing either the weight or amount of reps each week. It's definitely worth using in my opinion!
January 10, 2016
Been upping my 1RM ever week for a month now.
Been taking this for about 6 weeks and every time I hit the gym on deadlift day my MAX goes up more and more. This stuff is great.
January 10, 2016
Good Product
I have been taking this for amount month now and I notice a difference in the way I look. I can increase weight easier in larger muscle groups. I recover easily and ordered two more bottles.
May 28, 2015
I'm stacking this with Test booster and they're working magically together! feeling stronger and not so sore the days after I workout
April 16, 2015
more strength = more satisfaction
I've been using this for 2 weeks and I actually increased weight in my deadlifts and bench press. I've never lifted 2 plates on bench press and it feels great!! I'm definitely gonna keep it going and I can't wait to see the end result.
April 16, 2015
gains on gains on gains
I received a full bottle of this and decided to stack it with Phosphagrow and the results are so far awesome!!! I can just feel the energy throughout the workout and I feel like I'm recovering faster!! Also, I feel like I'm gaining more strength!
April 16, 2015