TB-500 is a peptide fragment hormone that is primarily used in the treatment of various muscle injuries or pain caused by inflammation.   TB-500 is designed to provide the benefits of the naturally occurring thymus produced hormone.
TB-500 Functions and Traits
The thymus gland as well as in various localized cells in the human body produces thymosin Beta-4 (TB-4). TB-4 is found in cytoplasm in high levels of concentration as well as in wound fluid. TB-500 is designed to promote the actionable area – the part of TB-4 that promotes healing. More importantly, manufacturing TB-500, despite not being TB-4 is possible while the latter is extremely difficult.
The primary purpose of TB-500 lies in its ability to promote the upregulation of cells in the body. Upregulation increases the cell’s sensitivity to action, specifically in proteins such as actin. This action helps to regulate inflammation in injured areas of the body as well as provide new blood vessel pathways. Of interesting note – TB-500 possesses a very low molecular weight allowing it to carry a high level of mobility in the body. Simply put, TB-500 can travel long distances through the body, virtually to all locations. TB-500 does not have to be administered to the injured area but will find its way to all injured areas regardless of administrated location.
Effects of TB-500
TB-500 is not meant to be used to bulk, cut, lose fat or increase strength. This is a peptide hormone that is designed to promote healing, specifically the healing of wounded or injured areas of the body. TB-500 can be used to treat muscle tears or strain, tendon inflammation and even skin injuries. This peptide will not cause instant healing of an injured area. If a muscle is torn it is torn, but use of TB-500 will in many cases speed up the healing process. For nagging injuries, those that don’t keep the individual out of the gym but slow his progress, it may provide the edge he needs to continue his training without it being diminished.
The effects of TB-500 have also been linked to hair growth, specifically the reversal of hair loss caused by male-pattern baldness. 
Side Effects of TB-500
As with any injectable medication, especially peptides, the most common side effect will be skin irritation at the injected site. However, this does appear to be less common with TB-500 as compared to other injectable peptides in terms of anecdotal reports by users. 
TB-500 Administration
TB-500 comes in freeze-dried (lyophilized) form and must be reconstituted with bacteriostatic water for administration. The most common dosing range in human use is 2.0 to 2.5mg of TB-500 two times per week for approximately 4-6 weeks. Once the 4-6 weeks of use is complete, once the injured area has improved, some users will reduce to one to two injections per month for injury prevention. Many users report greater muscle flexibility when using TB-500, thereby reducing further injury potential.
Higher doses of TB-500, those beyond 2.0-2.5mg twice per week, there is no data available to support how much stronger such dosing plans will be. There is very little data to support the lower doses beyond anecdotal but even less when it comes to higher doses. As healing and injury prevention is the primary point of use and the 2.0-2.5mg plans seem to carry a high rate of success, this does tend to lend to higher doses being unnecessary.
TB-500 Reviews
TB-500 is one of the more interesting peptides on the market due to its potential for directly healing injuries. Some data, although limited, has also shown the peptide may in fact have heart-healing properties.