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Cicloserina para la tuberculosis

Cycloserine is one of several medicines you will need to take to treat tuberculosis (TB).

You will need to have regular blood tests while you are taking the medicine.

It is important that you take your doses regularly, every 12 hours.

De un vistazo

  • Cycloserine is a medicine used to treat tuberculosis (TB).

  • It is prescribed when other common TB medicines are unsuitable or ineffective.

  • Take capsules regularly, usually twice a day, with or without food.

  • Do not drink alcohol or stop taking cycloserine without your doctor's advice.

  • Tell your doctor if you experience severe headaches, dizziness, confusion, or fits.

About cycloserine

Tipo de medicamento

An antituberculosis medicine

Usado para

Tuberculosis (TB)

Disponible como

Cápsulas

Cycloserine is used to treat tuberculosis (TB). TB is a bacterial infection which mostly affects the lungs, but which can affect any part of your body. TB is treatable with a course of medicines which usually lasts for six months. You will need to take several medicines to treat TB - cycloserine is one of the medicines used. Cycloserine will be prescribed for you if other more frequently prescribed antituberculosis medicines are either not suitable for you, or have not been effective for you.

Cycloserine works by acting on the cell walls of the germs (bacteria) responsible for the TB. The cell walls do not form correctly which causes them to break, killing the bacteria.

Cycloserine will be prescribed for you by a doctor who specialises in the treatment of TB. It is important that you take it regularly.

Before taking cycloserine

Some medicines are not suitable for people with certain conditions, and sometimes a medicine can only be used if extra care is taken. For these reasons, before you start taking cycloserine it is important that your doctor knows:

  • Si estás embarazada o amamantando.

  • Si bebes mucho alcohol.

  • If you have any mental health problems, such as anxiety, depression or psychosis.

  • If you have any problems with how your liver works, or any problems with the way your kidneys work.

  • If you have a condition that causes fits, such as epilepsy.

  • Si tienes un trastorno sanguíneo hereditario raro llamado porfiria.

  • Si está tomando otros medicamentos. Esto incluye cualquier medicamento que se pueda comprar sin receta, así como medicamentos herbales y complementarios.

  • Si alguna vez has tenido una reacción alérgica a un medicamento.

How to take cycloserine

  • Before you start the treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about cycloserine and will provide you with a full list of the side-effects which you could experience from taking it.

  • Take the capsules exactly as your doctor tells you to. As a guide, the usual dose to begin with in adults is one capsule twice a day, taken 12 hours apart (morning and evening). After two weeks, your dose may be increased to two capsules twice a day, depending on the result of a blood test.

  • Try to take your doses of cycloserine at the same times of day each day, as this will help you to remember to take your doses regularly. You can take the capsules either with or without food.

  • If you forget to take a dose, take it as soon as you remember. Try to take the correct number of doses each day, but do not take two doses at the same time to make up for a missed dose.

Obteniendo el máximo de tu tratamiento

  • It is important that you keep your regular appointments with your doctor, or clinic. This is so your doctor can check on your progress. Your doctor will want you to have blood tests during the treatment, to make sure you have just the right amount of the medicine in your bloodstream. For some people, these tests can be as regular as once a week.

  • Continue to take the capsules regularly - do not stop taking cycloserine unless your doctor tells you to stop. This is because it is important for you to complete the course of medicine so that the infection does not come back. Your treatment will last for several months.

  • Do not to drink alcohol while you are on cycloserine. Cycloserine causes drowsiness, and drinking alcohol will increase the chance that you experience this side-effect. It also increases the risk of more serious side-effects, such as fits (convulsions).

  • Cycloserine can stop the oral typhoid vaccine from working properly. If you are due to have any vaccinations, make sure that the person treating you knows you are taking this medicine. Also, if you are due to have an operation or any dental treatment, you should tell the person carrying out the treatment that you are taking cycloserine for TB.

  • If you buy any medicines 'over the counter', check with a pharmacist that they are suitable for you to take alongside your prescribed medicines.

Can cycloserine cause problems?

Along with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. The table below contains some of the ones associated with cycloserine. You will find a full list in the manufacturer's information leaflet supplied with the medicine. The unwanted effects often improve as your body adjusts to the new medicine, but speak with your doctor or pharmacist if any of the following continue or become troublesome.

Cycloserine side-effects

¿Qué puedo hacer si experimento esto?

Dolor de cabeza

Drink plenty of water and ask your pharmacist to recommend a suitable painkiller. Let your doctor know if the headache continues

Feeling dizzy or sleepy, a spinning sensation (called vertigo)

Do not drive and do not use tools or machines. Do not drink alcohol

Feeling shaky, fits, feeling confused, mood or character changes, allergic skin rashes

Let your doctor know as soon as possible if you experience any of these

Changes to the results of some blood tests (such as those checking your liver and blood)

Su médico supervisará estos

Si experimenta cualquier otro síntoma que crea que puede deberse a las cápsulas, por favor hable con su médico o farmacéutico para obtener más consejos.

How to store cycloserine

  • Mantenga todos los medicamentos fuera del alcance y la vista de los niños.

  • Almacenar en un lugar fresco y seco, lejos del calor y la luz directos.

Información importante sobre todos los medicamentos

Información importante sobre todos los medicamentos

Nunca tome más de la dosis prescrita. Si sospecha que usted u otra persona podría haber tomado una sobredosis de este medicamento, acuda de inmediato al departamento de accidentes y emergencias de su hospital local. Lleve el envase con usted, incluso si está vacío.

Este medicamento es para ti. Nunca lo des a otras personas, incluso si su condición parece ser la misma que la tuya.

No guardes medicamentos caducados o no deseados. Llévalos a tu farmacia local, que se encargará de desecharlos por ti.

Si tienes alguna pregunta sobre este medicamento, consulta a tu farmacéutico.

Informar efectos secundarios de un medicamento o vacuna

Si experimenta efectos secundarios, puede reportarlos en línea a través de Sitio web de Yellow Card.

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¿Inseguro sobre mezclar medicamentos?

Verifica posibles interacciones entre medicamentos, suplementos y alimentos antes de tomarlos juntos.

Preguntas frecuentes

What happens if I accidentally take two doses at once?

If you forget to take a dose, you should take it as soon as you remember. However, it's important not to take two doses at the same time to make up for a missed dose. If you accidentally take too much, or suspect an overdose, you should go to the accident and emergency department of your local hospital immediately and take the medicine container with you.

What should I do if I notice changes in my mood or behaviour while taking cycloserine?

If you experience serious side-effects like feeling shaky, having fits, feeling confused, or noticing changes in your mood or character, you should let your doctor know as soon as possible. Your doctor will monitor your progress and blood tests throughout your treatment.

Will I have to take cycloserine for the entire six-month TB treatment?

Cycloserine is one of the medicines used to treat TB, and your treatment course for TB will last for several months. It is important to continue taking cycloserine regularly and not to stop unless your doctor tells you to. This ensures the infection does not return.

Can I drive or operate machinery while taking cycloserine?

Cycloserine can cause side-effects such as feeling dizzy, sleepy, or experiencing a spinning sensation (vertigo). If you experience these, you should not drive or use tools or machines.

What should I do with any leftover cycloserine capsules once my treatment is finished?

You should not keep out-of-date or unwanted medicines. Take any unused cycloserine to your local pharmacy, and they will dispose of them for you.

Lecturas adicionales y referencias

Sobre el autorVer biografía completa

Imagen del autor

Michael Stewart, MRPharmS

Gerente de Revisión de Folletos de Medicamentos – Contratista, Farmacéutico

BPharm (Hons), MRPharmS

Michael es un farmacéutico comunitario que ejerce en Midlands y South Yorkshire con más de 20 años de experiencia asesorando sobre medicamentos y condiciones médicas. Tiene una sólida formación en capacitación en atención médica, habiendo producido e impartido cursos de formación para equipos de farmacia y personal de entornos de atención residencial, incluidas enfermeras. También ha contribuido a juntas asesoras de farmacia para la gestión de condiciones de baja gravedad en la comunidad.

Acerca del revisor

Imagen del autor

Sid Dajani

Sultan Dajani se graduó en la Escuela de Farmacia de Londres en 1994 y se convirtió en el miembro más joven elegido para el consejo de la Sociedad Real de Farmacia desde su fundación en 1842.

Historial del artículo

La información en esta página está escrita y revisada por pares por clínicos calificados.

  • Próxima revisión: 1 Jun 2028
  • 1 Jun 2025 | Última versión

    Última actualización por

    Michael Stewart, MRPharmS

    Revisado por pares por

    Sid Dajani
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