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Follistatin (FST) 344 is a synthetic version of the naturally occurring human follistatin protein. Follistatin is found in nearly all tissues of higher animals and comes in two separate isoforms as a result of alternative gene splicing. Its primary biological function is neutralization of proteins in the TGF-beta superfamily. It has particularly potent neutralizing effects on activin, myostatin, and follicle-stimulating hormone
Molecular Weight: 3780 g/mol
Synonyms: Activin-Binding Protein, FSH-Suppressing Protein, FST


Follistatin 344, an intrinsic human peptide, has swiftly piqued the curiosity of the scientific fraternity, given its multifarious involvement in human physiology and possible therapeutic exploits. With its profound antagonistic action against myostatin, a protein known for thwarting muscle development, Follistatin 344 is on the verge of ushering in a new era in the health and fitness landscape.

This peptide, known as Follistatin 344, is a glycoprotein that latches onto and subdues the actions of members of the transforming growth factor-beta (TGF-β) superfamily, notably myostatin and activins. Myostatin, of particular interest, is a protein that impedes muscle growth. By counteracting myostatin, Follistatin 344 fosters muscle augmentation and fortitude, thereby emerging as a potential course of action for muscle atrophy disorders and senescence-associated muscle deterioration.

Research Involving Follistatin 344

The investigations encircling Follistatin 344 are exhaustive, spanning a multitude of domains. Empirical evidence has demonstrated that Follistatin 344 can bolster muscle mass and resilience in animal models, hinting at promising implications for humans. Mouse studies have shown that an overabundance of Follistatin leads to a marked upswing in muscle mass and fortitude. Moreover, research indicates that Follistatin 344 could play a part in modulating glucose and lipid metabolism, thereby broadening the therapeutic prospects for metabolic aberrations.

Follistatin 344 and Muscle Augmentation

A significant advantage of Follistatin 344 is its involvement in muscle growth and maturation. By counteracting myostatin, a protein that curbs muscle growth, Follistatin 344 encourages muscle hypertrophy and bolsters muscle strength. This can be particularly beneficial for individuals grappling with muscle dystrophies, senescence-related muscle loss, or those seeking to enhance their physical fitness and prowess.

Follistatin 344 and Metabolic Modulation

Beyond muscle augmentation, Follistatin 344 also plays a role in metabolic modulation. Empirical evidence suggests that it can enhance glucose tolerance and insulin sensitivity, implying potential benefits for individuals diagnosed with type 2 diabetes. Furthermore, it has been found to curtail fat accumulation and foster lean body mass, spotlighting its potential involvement in obesity management.

Follistatin 344 and Reproductive Wellbeing

In the domain of reproductive wellbeing, Follistatin 344 has displayed potential advantages. It plays an instrumental role in follicular development in women, and research points to its potential to boost fertility. Moreover, it could also have implications for male reproductive wellbeing, although more in-depth research is required to fully comprehend these potential advantages.

Safety and Potential Adverse Effects of Follistatin 344

While the advantages of Follistatin 344 are promising, it’s critical to consider potential adverse effects. As with any substance, there could be risks linked with its usage. Current research indicates that elevated levels of Follistatin 344 could lead to potential complications, including ovarian cysts in women and potential impacts on bone density. Thus, further research is vital to fully delineate the safety profile of Follistatin 344.

The prospective advantages of Follistatin 344 are extensive and promising, extending from muscle growth and strength to metabolic modulation and reproductive wellbeing. As investigations continue to delve into the myriad benefits of this potent peptide, we can anticipate our understanding to expand, paving the way for new therapeutic approaches. 

Anticipated Trajectories of Follistatin 344

Peering into the future, Follistatin 344’s prospects in scientific and medical research are burgeoning. With ongoing investigations aimed at discerning its precise mechanisms of action and potential uses, we may be teetering on the precipice of unprecedented discoveries. Investigators are particularly intrigued by its role in muscle rejuvenation, metabolic modulation, and reproductive health.

Follistatin 344 and Muscle Regeneration

In the realm of muscle rejuvenation, Follistatin 344 exhibits immense promise. Researchers are probing its potential to assist in recuperation from muscle injuries and ailments, such as muscular dystrophy and sarcopenia. The peptide’s capability to foster muscle growth by inhibiting myostatin could be a game-changer in the management of these conditions.

Follistatin 344 in Metabolic Anomalies

The implications of Follistatin 344 in metabolic modulation also present intriguing possibilities. Its potential to enhance glucose tolerance and insulin sensitivity could lay the groundwork for innovative treatments for type 2 diabetes and other metabolic anomalies. Furthermore, its role in fostering lean body mass could render it a valuable weapon in the battle against obesity.

Follistatin 344 and Reproductive Medicine

In the sphere of reproductive medicine, Follistatin 344 could potentially revolutionize for complications treatments. Its role inular development follic suggests it could assist in enhancing fertility in women. Additionally, potential implications in male reproductive health are under exploration, offering hope for a wide array of reproductive health challenges.

Follistatin 344: A Potent Instrument with Future Potential

Follistatin 344 embodies a potent instrument with immense potential in various fields of health and medicine. Its promising role in muscle growth, metabolic modulation, and reproductive health underscores its significance in the scientific community. As research advances, we anticipate a greater comprehension of Follistatin 344’s benefits and potential applications, pushing the boundaries of health and therapeutic treatments.

We find ourselves on the verge of a new epoch where peptides like Follistatin 344 could alter the way we approach health and well-being. The future indeed holds promise, and we eagerly anticipate the advancements that lay in store.

Below are some findings from a number of past researches been done by renowned peptides researchers on Follistatin 344:

Follistatin Research and Muscle Growth

Myostatin can be explained as a type of protein and it is produced by cells that prohibit the growth and differentiation of muscle cells. It is also recognized as a member of the TGF-beta protein family and hence is susceptible to prohibition by follistatin. There is some evidence too on the basis of previous research that myostatin genes can cause muscle waste in various diseases, like muscular dystrophy. Animal test subjects with a lack of myostatin usually have more muscle mass and are stronger than normal. Scientists think that activating follistatin proteins through genetic manipulation could be a way to treat diseases like muscular dystrophy.

In mouse models, follistatin has been depicted to addition of lean muscle mass without any requirement for special diet regime or physical exercise. In only eight weeks of follistatin injections, mice used in the treatment group had nearly 10% more muscle mass than mice in the control group[1]. With that said, again, this is a result that has been obtained in the absence of any special diets. Hence, it indicates that muscle gain could be even more significant with appropriate training.

Chronic muscle disorders have been notoriously hard to treat with pharmacologic interventions. The follistatin therapy has been shown to be a promising therapy for chronic muscle disorders, such as muscular dystrophy. Animal models in mice have shown that follistatin initiates hypertrophy of muscle tissue and reduces inflammation and fibrosis when administered at a high dose. Giving the protein on a regular basis has also shown to improve strength in mouse models of Duchenne muscular dystrophy (DMD). These findings are significant and could help doctors give their patients more quality of life by reducing or eliminating the weakness associated with certain chronic muscle disorders. [2] [3]

One interesting aspect of research into the effects of follistatin on muscle growth is that it can lead to long-term benefits on muscle hypertrophy. In mouse models, one-time administration of follistatin via gene therapy has led to more than two years of enhanced mass and strength in both normal and dystrophic animals. These benefits were observed regardless of the age at which the animal was administered the gene; follistatin is effective at any age[4].

Research suggests that follistatin is relevant to muscle growth. This protein only requires one molecule of either insulin or IGF-1 to have an anabolic effect, and it actually decreases expression of IGF-1. Moreover, follistatin also stimulates the pancreas to produce more insulin, which suggests that the protein has a direct association with insulin signaling. [5]

Changes in strength as a result of follistatin (FS) treatment.

Source: PubMed

Follistatin May Improve the chances to Survival in Breast Cancer

The presence of follistatin in breast tumors was examined in a clinical study using reverse transcription polymerase chain reaction (RT-PCR) as well as immune-histochemistry techniques. It was found that follistatin is under-expressed in breast cancer for the most part, but is over-expressed in a small proportion of cases. In the cases where follistatin is over-expressed, tumors grow faster but are less invasive[6]. The presence of follistatin correlates strongly with survival and reduce breast cancer metastasis.

Follistatin has been found to suppress metastasis in a mouse model of HER2-positive breast cancer. Using these mice, researchers found that the protein blocks activin-induced migration of breast epithelial cells, but it is usually absent from the average tumor. Restoring follistatin had an impact on lung metastases and tumor growth[7].

Follistatin is also very important in benign breast conditions, such as fibroadenoma. In this condition, the cells grow rapidly and form benign tumors. The role of follistatin is to boost cell growth while inhibiting the that of fat cells, which encourages them to differentiate into more mature cells[8]. These tumors are often characterized by high levels of FST. Again, this points to a trend that follistatin enhances localized growth while reducing the probability of metastasis.

Probability of breast cancer recurrence in the brain or lung in low versus high follistatin (FST) environments.
Source: PubMed

Follistatin in Esophageal Cancer

Research has identified bone morphogenic protein (BMP) as a causative agent in the transition of normal esophageal tissue to Barrett’s esophagus, a precursor to cancer. It appears that acid reflux over-activates BMP in the esophagus and that counteracting this over-activation, such as through follistatin supplementation, could prevent the development of Barrett’s esophagus in the first place.

When researchers studied breast cancer, they found that the protein BMP misregulation is actually present in colon cancer. For example, impaired BMP signaling is important in the progression of colon cancer. It’s crucial that more research is done on animals, to better quantify how follistatin can be used in fighting against BMP misregulation.

Follistatin Research and Cancer Treatment

Researchers have found that follistatin is active in a number of different cancers, including breast cancer and liver carcinoma. It is hoped that research into the workings of this protein will lead to the development of more cancer treatments. Currently, there is evidence to suggest that when expressed at high levels, follistatin improves survival rates in breast cancer patients, but shortens life in lung, ovarian and gastric cancer patients. By understanding these differences between various types of cancers and studying the impact it may have on their treatment or prognosis, we could learn how to design new treatments or vaccinations that slow or prevent metastasis or help patients survive longer. [9]

Follistatin Associated with Cell Proliferation

Researchers have recently uncovered a dichotomy in the way follistatin works. When located in certain cells, follistatin promotes cell proliferation but restricts metastasis. As it turns out, this is true for most of the body, including the liver. Rat models show that when activin is suppressed by follistatin, proliferation seems to increase. This may explain why follistatin appears to be associated with increased tumor growth without any effect on migration or invasion; energy is being redirected from migration and changed into reproduction instead. [10]

Follistatin Research and Liver Protection

Follistatin has been studied extensively for its potential in the prevention of liver diseases. Studies show that it can be helpful to slow the progression of hepatopathy as a result of early fibrosis, a trait that occur due to the 87% reduction of hepatocellular death in treatment groups. Dysregulation of follistatin has also been linked to the cancerous progression of liver disease. [11] [12]

Follistatin Provides Insight into Congenital Blindness

Research suggests that high levels of TGF-beta proteins, such as BMP (bone morphogenic protein), can suppress optic fusion. By inhibiting these proteins during important developmental periods of pregnancy, optic nerve fusion is made more likely and blindness is reduced. There is basic research into the benefits of follistatin supplementation to ensure that optic nerve fusion takes place during important phase of pregnancy. [13]

Follistatin Research and Hair Growth

Human researches shows that follistatin, specifically when used with other hair-growth stimulants, can improve hair growth significantly. Measurements in a trial of 26 individuals depicted a 20% increase in hair density and a nearly 13% increase in overall thickness. These results remained similar for at least one year following treatment with a single intradermal injection of a follistatin/Wnt- complex[14].

Follistatin Research and Insulin Deficiency and Diabetes

Long-term therapy with follistatin can lead to nearly total prevention of the complications associated with type 1 and type 2 diabetes. By treating diabetic patients, researchers have increased their longevity. The compound works by helping islet cells produce insulin and as a result, blood glucose levels are greatly improved. A form of this treatment may work for both type 1 and type 2 diabetics. This study can lead to long-term improvements with the hopes of preventing or curing diabetes altogether. [15]

The Future of Follistatin Research

Follistatin 344 is a protein with many medical uses. It has low oral and excellent subcutaneous bioavailability in mice. Healthwise, the side effects are moderate but it can be used to treat many diseases. It yields good information about human physiology and may someday yield treatments for several different diseases. Large doses have not yet been tested in humans, and for that reason, Follistatin 344 is sold strictly for research purposes only. If you are looking for follistatin 344 1mg peptide for sale, you will find that this caution is accomplished by adding an extra warning label on our product pages.

Article Author

The above literature was researched, edited and organized by Dr. Logan, M.D. Dr. Logan holds a doctorate degree from Case Western Reserve University School of Medicine and a B.S. in molecular biology.

Scientific Journal Author

Ruth A. Keri, PhD. Professor and Vice Chair at Department of Pharmacology in Case Western University School of Medicine. Dr. Keri is an Associate Director for Basic Research, Case Comprehensive Cancer Center. For more than 17 years, her research has been tend to focused on the genomic and signaling mechanisms that control the development of mammary gland and cancer. This has involved generating and using data from cell lines and genetically manipulated mouse models of breast cancer as well as evaluation of publicly available human breast cancer array data. She has designed and used mouse models of disease throughout her research career, including assessing the efficacy of therapeutic agents such as vitamin D analogs, rapamycin, and dasatinib in mammary cancer models. Most specifically, she studied Follistatin’s effect of suppressing metastatis in a mouse model of HER2-positive breast cancer. She also has significant experience assessing drug synergy, in vitro and in vivo. Her laboratory extensively uses xenograft models of breast cancer. They also have expertise in the analysis of proliferation and apoptosis, migration and invasion, centrosome defects and genomic instability, and gene-specific chromatin immunoprecipitation as well as immunohistochemistry of mouse and human tissues. Underscoring this ability, she was the co-leader of the Breast Cancer Program-in-Development in the Case Comprehensive Cancer Center (Case CCC) before becoming its Associate Director for Basic Research. Moreover, she has significant expertise in Pharmacology, having earned my doctoral in this field. She was recently awarded the Garvin and Frackelton Professor of Cancer Research at CWRU.

Ruth A. Keri, PhD. is being referenced as one of the leading scientists involved in the research and development of Follistatin 344. In no way is this doctor/scientist endorsing or advocating the purchase, sale, or use of this product for any reason. There is no affiliation or relationship, implied or otherwise, between and this doctor. The purpose of citing the doctor is to acknowledge, recognize, and credit the exhaustive research and development efforts conducted by the scientists studying this peptide. Dr. Keri is listed in [7] under the referenced citations.


3 reviews for FOLLISTATIN 344 (1 MG)

  1. Kevin Levrone

    Fast Shipping

  2. James Martin

    “Fast shipping and great customer service. Our research team noticed promising results in the muscle growth of our test subjects. Highly recommended for research purposes!”

  3. Jon

    The workout level has improved drastically. One point contact you are.

    Couldn’t thank you enough..

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Product Usage: This PRODUCT IS INTENDED AS A RESEARCH CHEMICAL ONLY. This designation allows the use of research chemicals strictly for in vitro testing and laboratory experimentation only. All product information available on this website is for educational purposes only. Bodily introduction of any kind into humans or animals is strictly forbidden by law. This product should only be handled by licensed, qualified professionals. This product is not a drug, food, or cosmetic and may not be misbranded, misused or mislabeled as a drug, food or cosmetic.