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Generic Name: cycloserine

It is used to treat tuberculosis (TB)
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What is this medicine?

CYCLOSERINE (sye kloe SER een) is an antibiotic. It is used to treat tuberculosis (TB). This medicine is also used to treat infections of the urinary tract. It will not work for colds, flu, or other viral infections.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:
  • alcoholism
  • anxiety
  • depression or other mental illness
  • kidney disease
  • seizure disorder
  • an unusual or allergic reaction to cycloserine, other medicines, foods, dyes or preservatives
  • pregnant or trying to get pregnant
  • breast-feeding

How should I use this medicine?

Take this medicine by mouth with a glass of water. Follow the directions on the prescription label. Take your medicine at regular intervals. Do not take your medicine more often than directed. Do not skip doses or stop your medicine early even if you feel better. Do not stop taking except on your doctor's advice.

Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed.

What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

What may interact with this medicine?

  • alcohol
  • ethionamide
  • isoniazid, INH

What should I watch for while using this medicine?

Visit your doctor or health care professional for regular check ups. You will need blood work done regularly.

You may need to take vitamin supplements while on this medicine. Talk to your doctor about the foods you eat and the vitamins you take.

You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks.

What side effects may I notice from receiving this medicine?

Side effects that you should report to your doctor or health care professional as soon as possible:
  • allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
  • anxiety, confusion, depression, memory problems
  • breathing problems
  • change in speech
  • dizziness, loss of balance
  • excessive sweating
  • hallucination, loss of contact with reality
  • high blood pressure
  • seizure
  • tingling, pain, or numbness in the hands or feet
  • tremor
  • trouble walking
  • unusually weak or tired

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

  • headache

Where should I keep my medicine?

Keep out of the reach of children.

Store at room temperature between 20 and 25 degrees C (68 and 77 degrees F). Throw away any unused medicine after the expiration date.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.


All visitors to AARP.org should seek expert medical care and consult their own physicians for any specific health issues. Read this disclaimer in its entirety.
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Note: This information is not intended to cover all possible uses, precautions, interactions, or adverse effects for this drug. If you have question about the drug(s) you are taking, check with your health care professional.
 
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