Seromycin is an antibacterial medication primarily used to treat tuberculosis infections. It works by interfering with the formation of the bacterial cell wall, which is essential for mycobacterium tuberculosis survival. The drug mimics the natural amino acid d-alanine and binds to the d-alanine-d-alanine terminus of the peptidoglycan precursor, preventing its incorporation into the wall. This inhibition halts bacterial growth and leads to cell death. In addition to its antimicrobial action, the compound acts as a partial agonist at glycine receptors in the central nervous system. Because of these properties it is reserved for cases of multidrug-resistant tuberculosis when other treatments are ineffective. Its therapeutic benefit therefore stems from combined disruption of cell wall synthesis and modulation of neurotransmission.

Seromycin is a brand name for the antibiotic cycloserine used to treat tuberculosis. It works by inhibiting the enzyme involved in cell wall synthesis of mycobacterium tuberculosis. The drug is structurally similar to the natural amino acid alanine and is taken up into bacterial cells. Once inside it blocks the d-alanine racemase enzyme which is required for proper peptide cross-linking of the bacterial cell wall. This disruption weakens the cell wall and leads to bacterial death. Therapeutically the medication is used as part of a combination regimen to cure latent or active tuberculosis infections. Its pharmacokinetic profile includes good oral absorption and activity against intracellular mycobacteria. The intended effect is the suppression of bacterial growth to ultimately eliminate the infection.

The most common side effects often include mild discomfort such as headache. Some people experience occasional nausea that usually resolves on its own. Drowsiness is frequently reported after taking certain treatments. A dry mouth can occur and may be managed by staying hydrated. Lightheadedness sometimes appears especially when standing quickly. Muscle aches may develop without significant injury. Overall these reactions are typically temporary and not serious.

Many medications can cause mild headache. Some people experience nausea occasionally. Dizziness is reported by a portion of users. Fatigue may occur after taking the drug. Skin rash can develop in certain individuals. Dry mouth is a frequent complaint. Temporary changes in taste perception have been noted.