What is TB-500 (Thymosin Beta-4)?

TB-500, also known as Thymosin Beta-4, is a synthetic peptide composed of 43 amino acids. It is an analogue of a naturally occurring protein in the human body, playing an important role in tissue regeneration, cell migration, and healing processes.

One of the most important properties of TB-500 is its ability to promote angiogenesis, which is the formation of new blood vessels. This property makes it particularly interesting for research into musculoskeletal regeneration, wound healing, and inflammatory tissue damage.

Potential Benefits

TB-500 can support the regeneration of muscles, tendons, cartilage, and skin tissues by promoting cell migration and division. It can stimulate the formation of new blood vessels, modulate inflammatory processes, support cardiac tissue regeneration, accelerate muscle and joint recovery after intense exertion, and have positive effects on wound healing, skin regeneration, and hair growth.

Mechanism of Action

TB-500 primarily acts by promoting cell migration and proliferation, two central processes in tissue repair. It binds to actin—a protein that plays a central role in cell structure, movement, and cell division. The peptide is particularly abundant in tissues subjected to high mechanical stress: heart muscle, skeletal muscles, eyes. It can also stimulate the formation of new capillaries and support the body's natural repair mechanisms.

Dosage and Use

Typically, 500 µg to 1 mg per application, approximately three times a week, which is 20 to 40 units per application. The injection is performed subcutaneously in the abdominal area or the front of the thigh. Leave the needle in place for about 10 seconds and regularly change injection sites. A typical cycle lasts 30 to 45 days. One pen contains 200 units of 25 µg and lasts approximately 3 weeks depending on the dosage. Examples: 1 unit = 25 µg — 20 units = 500 µg — 40 units = 1 mg.

Common Combinations

TB-500 is often combined with BPC-157 (one of the most well-known combinations for joint, tendon, and muscle regeneration), IGF-1 LR3 (support for cell regeneration and anabolic processes), GHRP-2 / GHRP-6 (stimulation of growth hormone release), and Ipamorelin (selective GH secretagogue often used in long-term research protocols).

Possible Side Effects

TB-500 is considered a well-tolerated peptide in scientific studies. Mild side effects may occasionally occur: headaches, nausea, and redness or tenderness at the injection site. These symptoms are generally mild and transient.