Cycloserine
Seromycin (cycloserine) is a prescription antibiotic used primarily to treat drug-resistant tuberculosis when first-line medications are ineffective or cannot be tolerated. It belongs to a class of antibiotics called oxazolidinones and is typically used as part of combination therapy in patients with multidrug-resistant TB infections.
Seromycin is a second-line antibiotic used to treat drug-resistant tuberculosis infections.
Key facts at a glance
- RxNorm
- 204225
- Generic
- Seromycin
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Seromycin is indicated for the treatment of active pulmonary and extrapulmonary tuberculosis caused by Mycobacterium tuberculosis strains that are resistant to standard first-line anti-tuberculosis medications. It is used when other drugs have failed or are contraindicated.
As an antibiotic, Seromycin works by inhibiting bacterial cell wall synthesis, helping to control and eliminate tuberculosis bacteria. It is typically used in combination with other anti-tuberculosis medications to prevent resistance development.
Seromycin carries a risk of significant neurological and psychiatric side effects including anxiety, depression, and seizures. Regular monitoring of blood levels and neurological function is recommended. It should be used with caution in patients with a history of mental health conditions or seizure disorders. Alcohol should be avoided during treatment.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 9, 2026. · Read our editorial policy