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Cysteamine (Ophthalmic)

Generic Name: Cysteamine (Ophthalmic) (sis TEE a meen)
Brand Name: Cystaran

Uses of Cysteamine:

  • It is used to get rid of a protein called cystine from the eye.

What do I need to tell my doctor BEFORE I take Cysteamine?

  • If you are allergic to cysteamine (ophthalmic); any part of cysteamine (ophthalmic); or any other drugs, foods, or substances. Tell your doctor about the allergy and what signs you had.

This medicine may interact with other drugs or health problems.

Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take cysteamine (ophthalmic) with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.

What are some things I need to know or do while I take Cysteamine?

  • Tell all of your health care providers that you take cysteamine (ophthalmic). This includes your doctors, nurses, pharmacists, and dentists.
  • Use care when driving or doing other tasks that call for clear eyesight.
  • Bright lights may bother you. Wear sunglasses.
  • Tell your doctor if you are pregnant, plan on getting pregnant, or are breast-feeding. You will need to talk about the benefits and risks to you and the baby.

How is this medicine (Cysteamine) best taken?

Use cysteamine (ophthalmic) as ordered by your doctor. Read all information given to you. Follow all instructions closely.

  • For the eye only.
  • Take out contact lenses before using cysteamine (ophthalmic). Lenses may be put back in 15 minutes after cysteamine (ophthalmic) is given. Do not put contacts back in if your eyes are irritated or infected.
  • Do not touch the container tip to the eye, lid, or other skin.
  • Tilt your head back and drop drug into the eye.
  • After use, keep your eyes closed. Put pressure on the inside corner of the eye. Do this for 1 to 2 minutes. This keeps the drug in your eye.
  • Use your last dose of the day at least 30 minutes before bedtime.
  • If more than 1 drug is being used in the same eye, use the drugs at least 10 minutes apart.

What do I do if I miss a dose?

  • Skip the missed dose and go back to your normal time.
  • Do not use 2 doses at the same time or extra doses.

What are some side effects that I need to call my doctor about right away?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Change in eyesight, eye pain, or very bad eye irritation.

What are some other side effects of Cysteamine?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:

These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.

You may report side effects to the FDA at 1-800-332-1088. You may also report side effects at https://www.fda.gov/medwatch.

If OVERDOSE is suspected:

If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

How do I store and/or throw out Cysteamine?

  • Some unopened containers need to be stored in the freezer. Some unopened containers need to be stored in the refrigerator. Be sure you know how to store your product. Store in-use containers at room temperature. Be sure you know how long containers can be stored before they must be thrown away.
  • Keep lid tightly closed.
  • Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
  • Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.

Consumer information use

  • If your symptoms or health problems do not get better or if they become worse, call your doctor.
  • Do not share your drugs with others and do not take anyone else's drugs.
  • Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about cysteamine (ophthalmic), please talk with your doctor, nurse, pharmacist, or other health care provider.
  • If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.