Thymosin Injection Method and Site
Aug 14, 2025| Thymosin is primarily used to regulate and enhance immunity. It is a group of biologically active peptides secreted by the thymus gland. Commonly used clinically, thymosin is a small molecule peptide with nonspecific immune effects, discovered and purified from the calf thymus. A single dose of 10-20 mg dissolved in 2 ml of sterile water for injection or 0.9% sodium chloride injection is administered subcutaneously into the lateral upper arm or intramuscularly into the buttocks, once daily, or as directed by a physician. Alternatively, a single dose of 20-80 mg dissolved in 500 ml of 0.9% sodium chloride injection or 5% glucose injection is administered once daily, or as directed by a physician. Most patients tolerate this medication well, although adverse reactions such as nausea, fever, dizziness, chest tightness, and weakness may occur. A few patients may experience occasional drowsiness. Patients with chronic hepatitis B may experience a transient increase in ALT levels when using this medication. If there are no signs of liver failure, this medication can continue to be used.


