Muscle building supplements are becoming more and more popular these days. This doesn’t come as a surprise since gaining muscle mass quickly isn’t an easy task. This process requires weeks and months spent in the gym paired with a balanced diet. However, here is the good news. There are certain products that can promote significant muscle growth in a relatively short amount of time.
Although these products don’t serve as a miracle solution that is guaranteed to work for everyone, the results that one can get from using them in conjunction with a proper workout program can be very impressive.
Growth Factor 9 is a prime example of a muscle building supplement that claims to provide these effects. This hormone boosting supplement is said to be the “fountain of youth” and will boost HGH production, stamina, and endurance without the use of any needles. With its powerful combination of ingredients, Growth Factor 9 is also said to unleash the total performance potential of each user. The manufacturers even mention a clinical study which supposedly proves that Growth Factor 9 increase HGH levels by an amazing 682%.
Very impressive claims indeed. Buy are they true? In this review we will thoroughly examine Growth Factor 9, summarize the results and give you the final verdict. Just keep reading!
How Does Growth Factor 9 Work?
Unlike synthetic HGH formulas, this one is actually said to release the growth hormone naturally into the system.
The Growth Factor 9 ingredients are said to:
- Boost nitric oxide which will significantly increase blood flow, giving you better muscle contraction, stamina, and more strength during your workout sessions.
- Decrease muscle fatigue and recovery time. This means more strength and endurance in less time.
- Increase energy levels by boosting the body’s carnitine levels.
- Enhance protein synthesis, which is the main driver of the muscle building process.
Growth Factor 9 Ingredients
Unfortunately, Growth Factor 9 is made out of a proprietary blend. And by now almost everyone knows why these blends are bad. For the uninformed reader, manufacturers use proprietary blends to hide the actual dosing information for each ingredient found in a given product, making it virtually impossible to determine their true potency.
Be that as it may, here are the ingredients found in Growth Factor 9:
- L-Lysine HCL – Is a popular amino acid used in most muscle building products and supplements. L-Lysine was primarily used in traditional medicine as a remedy for cold sores and other respiratory problems. However, L-Lysine is also believed to increase levels of carnitine and nitric oxide, creating a strong foundation for muscle building (1). This amino acid is also said to increase human growth hormone production, and it should create best results if combined with L-Arginine. However, the scientific research available proves nothing that is claimed (2).
- L-Arginine HCL – Represents an amino acid that's necessary to make proteins and therefore muscle tissue. It occurs naturally in dairy foods, fish, red meat, and poultry. L-Arginine supplementation is believed to boost nitric oxide levels, which will improve blood flow, sending essential nutrients through the body. L-Arginine can also boost growth hormone availability, making it easier for the body to produce more. As far as research goes, there are some studies that found positive results with L-Arginine testing. However, most of them are still inconclusive in terms of its properties (3) (4).
- Oxo-Proline – This amino acid is derived from glutamine and is said to regulate the neutral amino acid transport across the blood-brain barrier, which might increase human growth hormone production (5). Oxo-Proline also produces collagen and cartilage, which maintains proper muscle and joint flexibility. Recent research has shown positive results regarding the Oxo-Proline benefits (6).
- N-Acetyl L-Cysteine – Or simply NAC, is an amino acid building block that has many uses in medicine. For instance, NAC is used to treat unstable angina, chest pain, bile duct blockage, ALS, Alzheimer’s disease, allergic reactions, eye infection, and much more (7). NAC is also found to aid with post-workout recovery, as it minimizes muscle fatigue and rebuilds the lost muscle fibers (8).
- L-Glutamine – A well-known amino acid that occurs naturally inside our bodies. L-Glutamine is found to improve immune system function, digestive health, and other important functions of the body, especially during periods of stress. This amino acid also supplies our cells with energy, assisting in the production of other chemicals inside our system. However, only a dose of 5 to 15 grams a day would create worthy results (9) (10).
- Schizonepeta Powder – Is the traditional Japanese plant, best known as Catnip. Schizonepeta is believed to resolve skin problems, sore throat issues, heavy menstrual pain, rashes, psoriasis, and fever. Some experts suggest that this plant contains potential anti-inflammatory properties, however, further investigation is needed in order to prove its true potency (11). It is important to mention that some people experienced liver damage when they supplemented with high doses of Schizonepeta. This raises a huge concern since we don’t know the exact dose found in Growth Factor 9 (12).
We can say that Growth Factor 9 does contain a couple of useful ingredients that have been proven to work. However, the majority of the components found in the formula have no real correlation with human growth hormone production or energy enhancement.
Another huge issue with this formula is the proprietary blend which hides the real dosing information. Without this valuable information, we aren’t able to properly analyze any scientific evidence since research might use different doses than the ones found in Growth Factor 9. The last big concern with this product is Schizonepeta Powder (Catnip), which can be extremely dangerous if consumed in higher doses, and since we are dealing with a proprietary blend we can only expect the worst.
Growth Factor 9 Pricing
This product can be purchased through most online retailers like Amazon and eBay, or it can be also bought in stores like GNC and Walmart. One bottle contains 120 capsules, which will last you for the next 30 days. As far as pricing goes, this supplement goes for $99.99, excluding shipping. A 30-day money back guarantee is also offered to every customer.
Growth Factor 9 might have the appearance of an extraordinary product that can create miracle results, however, the truth is very different. From everything we have shown in this review, we can only say it's quite clear that Growth Factor 9 is a supplement of rather questionable quality. It features most likely underdosed ingredients that could promote serious adverse effects. In the end, we don’t know if this product delivers its promised benefits as there is a serious limit to the information available on the Growth Factor 9 formula.
Here is a simple conclusion, if you’re looking for a worthy way to naturally boost muscle mass, strength, and energy look elsewhere since Growth Factor 9 is most likely not the solution.
- Smriga M, Ando T, Akutsu M, Furukawa Y, Miwa K, Morinaga Y. “Oral treatment with L-lysine and L-arginine reduces anxiety and basal cortisol levels in healthy humans.” Biomed Res. (2007 Apr). Viewed at:
- Caroline Wass, Daniel Klamer, Evangelos Katsarogiannis, Erik Pålsson, Lennart Svensson, Kim Fejgin, Inga-Britt Bogren, Jörgen A Engel, and Birgitta Rembeck. “L-lysine as adjunctive treatment in patients with schizophrenia: a single-blinded, randomized, cross-over pilot study.” BMC Med. (2011 Apr 18). Viewed at:
- McConell GK. “Effects of L-arginine supplementation on exercise metabolism.” Curr Opin Clin Nutr Metab Care. (2007 Jan). Viewed at: https://www.ncbi.nlm.nih.gov/pubmed/17143054
- Naseh Pahlavani, Mostafa Jafari, Omid Sadeghi, Masoud Rezaei, Hamid Rasad, Hossein Ali Rahdar, and Mohammad Hasan Entezari. “L-arginine supplementation and risk factors of cardiovascular diseases in healthy men: a double-blind randomized clinical trial.” Version 2. F1000Res. (2014). Viewed at:
- Shotaro Sasaki, Yuya Futagi, Masaki Kobayashi, Jiro Ogura, and Ken Iseki. “Functional Characterization of 5-Oxoproline Transport via SLC16A1/MCT1.” J Biol Chem. (2015 Jan 23. Viewed at:
- Jennifer L. Duewall, MD, Andrew Z. Fenves, MD, Daniel S. Richey, DO, Long D. Tran, MD, and Michael Emmett, MD. “5-Oxoproline (pyroglutamic) acidosis associated with chronic acetaminophen use.” Proc (Bayl Univ Med Cent) (2010 Jan). Viewed at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2804489/
- Vida Mokhtari, M.Sc, Parvaneh Afsharian, Ph.D, Maryam Shahhoseini, Ph.D, Seyed Mehdi Kalantar, Ph.D, and Ashraf Moini, M.D. “A Review on Various Uses of N-Acetyl Cysteine.” Cell J. (2017 Apr-Jun). Viewed at:
- Olivia Dean, BSc, PhD, Frank Giorlando, MBBS, BMedSc, and Michael Berk, MBBCh, MMed(Psych), PhD. “N-acetylcysteine in psychiatry: current therapeutic evidence and potential mechanisms of action.” J Psychiatry Neurosci. (2011 Mar). Viewed at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3044191/
- Legault Z, Bagnall N, Kimmerly DS. “The Influence of Oral L-Glutamine Supplementation on Muscle Strength Recovery and Soreness Following Unilateral Knee Extension Eccentric Exercise.” Int J Sport Nutr Exerc Metab. (2015 Oct). Viewed at: https://www.ncbi.nlm.nih.gov/pubmed/25811544
- RadhaKrishna Rao and Geetha Samak. “Role of Glutamine in Protection of Intestinal Epithelial Tight Junctions.” J Epithel Biol Pharmacol. (2012 Jan). Viewed at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4369670/
- Chen SG, Cheng ML, Chen KH, Horng JT, Liu CC, Wang S, Sakurai H, Leu YL, Wang SD, Ho HY. “Antiviral activities of Schizonepeta tenuifolia Briq. against enterovirus 71 in vitro and in vivo.” Sci Rep. (2017 Apr). Viewed at: https://www.ncbi.nlm.nih.gov/pubmed/28428548
- Fung D, Lau CB. “Schizonepeta tenuifolia: chemistry, pharmacology, and clinical applications.” J Clin Pharmacol. (2002 Jan). Viewed at: https://www.ncbi.nlm.nih.gov/pubmed/11817365
John has been a fitness enthusiast for over 10 years, starting out while struggling with obesity as a teenager. Over the years he has advised numerous clients on how to transform their physiques and their lives. As a writer on Nutrition Inspector he aims to help others achieve real results by staying clear of the common hype and false claims in the supplement industry!