Cystine B6

By Medically reviewed by Hello Doktor Medical Panel


What is cystine B6 used for?

Cystine B6 is commonly used for fragile hair or nails, or a damaged cornea which is not healing properly.

How should I take cystine B6?

Take this drug by mouth. Swallow whole with water. Do not chew or crush.

How do I store cystine B6?

Cystine B6 is best stored at room temperature away from direct light and moisture. To prevent drug damage, you should not store cystine B6 in the bathroom or the freezer. There may be different brands of cystine B6 that may have different storage needs. It is important to always check the product package for instructions on storage, or ask your pharmacist. For safety, you should keep all medicines away from children and pets.

You should not flush cystine B6 down the toilet or pour them into a drain unless instructed to do so. It is important to properly discard this product when it is expired or no longer needed. Consult your pharmacist for more details about how to safely discard your product.

Precautions & warnings

What should I know before using cystine B6?

Before using this drug, tell your doctor if:

  • You are pregnant or breastfeeding. This is because, while you are expecting or feeding a baby, you should only take medicines on the recommendation of a doctor.
  • You are taking any other medicines. This includes any medicines you are taking which are available to buy without a prescription, such as herbal and complementary medicines.
  • You have allergy with any of active or inactive ingredients of cystine B6 or other medications.
  • You have any other illnesses, disorders, or medical conditions.

Is it safe during pregnancy or breastfeeding?

There isn’t enough information about the safety of using cystine B6 during pregnancy and breastfeeding. Please always consult with your doctor to weigh the potential benefits and risks before taking cystein B6.

Side effects

What side effects can occur from cystine B6?

When taken in larger dose, it may occur neurological effects after stopping treatment.

Not everyone experiences these side effects. There may be some side effects not listed above. If you have any concerns about a side-effect, please consult your doctor or pharmacist.


What drugs may interact with cystine B6?

Cystine B6 may interact with other drugs that you are currently taking, which can change how your drug works or increase your risk for serious side effects. To avoid any potential drug interactions, you should keep a list of all the drugs you are using (including prescription drugs, nonprescription drugs, and herbal products) and share it with your doctor and pharmacist. For your safety, do not start, stop, or change the dosage of any drugs without your doctor’s approval.

Especially if you are taking levodopa.

Does food or alcohol interact with cystine B6?

Cystine B6 may interact with food or alcohol by altering the way the drug works or increase the risk for serious side effects. Please discuss with your doctor or pharmacist any potential food or alcohol interactions before using this drug.

What health conditions may interact with cystine B6?

Cystine B6 may interact with your health condition. This interaction may worsen your health condition or alter the way the drug works. It is important to always let your doctor and pharmacist know all the health conditions you currently have, such as cystinuria (a genetic disorder of the kidneys).


The information provided is not a substitute for any medical advice. You should ALWAYS consult with your doctor or pharmacist before using cystine B6.

What is the dose of cystine B6 for an adult?

Take 4 tablets a day in 2 doses.

What is the dose of cystine B6 for a child?

The dosage has not been established in pediatric patients. It may be unsafe for your child. It is always important to fully understand the safety of the drug before using. Please consult with your doctor or pharmacist for more information.

How is cystine B6 available?

Cystine B6 is available in the following dosage forms and strengths:

  • Tablet 1g

What should I do in case of an emergency or overdose?

In case of an emergency or an overdose, call your local emergency services or go to your nearest emergency room.

What should I do if I miss a dose?

If you miss a dose of cystine B6, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and take your regular dose as scheduled. Do not take a double dose.

Hello Health Group does not provide medical advice, diagnosis or treatment.

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Review Date: May 10, 2017 | Last Modified: December 19, 2019