How much does one cycloserine capsule cost?

Cycloserine (Cycloserine) is an antibiotic and anti-tuberculosis drug mainly used to treat bacterial infections such as tuberculosis and urinary tract infections. It was first isolated from actinomycetes in 1952 and played an important role in anti-tuberculosis treatment.

Cycloserine is currently on the market in China and has been included in medical insurance. Patients can purchase it domestically. The domestic drug250mg*10 tablets is about a few hundred yuan. For specific prices and medical insurance reimbursement prices, please consult the local hospital pharmacy. The cheaper ones abroad are Indian generic drugs. The price of 250mg*60 tablets is about 600 yuan, and the ingredients are basically the same as those of domestic drugs.

Cycloserine has a unique chemical structure. It is an amino acid derivative and belongs to the β- lactam antibiotics. It works by inhibiting the synthesis of bacterial cell walls. The specific mechanism is to competitively inhibit D-alanine-D-alanine ligase, preventing the cross-linking of peptidoglycan, thereby interfering with the synthesis of bacterial cell walls, leading to bacterial death. Compared with other antibiotics, cycloserine also shows some activity against drug-resistant strains, making it particularly important in the treatment of multidrug-resistant tuberculosis (MDR-TB).

In clinical applications, cycloserine is often used as a second-line drug for the treatment of drug-resistant tuberculosis, especially in cases of resistance to other anti-tuberculosis drugs (such as isoniazid and rifampicin). Cycloserine is well absorbed orally and can effectively penetrate into various tissues and body fluids of the human body, including the lungs and cerebrospinal fluid, which makes it effective in treating tuberculosis and tuberculous meningitis.

Although cycloserine plays an important role in anti-tuberculosis treatment, its use is also associated with some adverse effects. The most common adverse reactions are central nervous system symptoms, including headache, dizziness, insomnia, depression and anxiety, and may even trigger epilepsy and psychotic symptoms. Therefore, when using cycloserine treatment, patients need to be closely monitored by a doctor so that the dose can be adjusted or discontinued in a timely manner.