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Cystaran Eye Drops

Generic name: cysteamine ophthalmic [sis-TEE-a-meen-off-THAL-mik]
The brand names are: Cystadrops, Cystaran
Classification of drugs: Miscellaneous ophthalmic agents

What is Cystaran?

Cystaran reduces cysteine levels (an amino acid) within the body. Cystaran is prescribed to patients who suffer from cystinosis (SIS-tin-OH-sis). It is an uncommon genetic disorder that causes the buildup of cystine in the kidneys as well as other organs like the eyes. Cystaran overdose can lead to kidney failure and other medical issues.

Cystaran eye drops help to prevent cystine crystals from accumulating within the cornea (surface of the eye).


Contact lenses must be removed prior to using Cystaran eye drops. The lenses can be put back in within 15 minutes after the use of drops. Avoid touching the eyelids or other areas with the tip of the dropper of the bottle. The cap must remain on the bottle even when not being used.

Cystaran eye drops must be stored in a freezer container inside the carton that was originally used. The bottle must be allowed to completely defrost (for about 24 hours) before use. Follow the instructions on the label of your medication and the packaging. Be sure to inform your health care providers about your medical issues, allergies, and any medications you take.

Prior to use this drug

Consult your physician if you are nursing or pregnant. Cystaran is not recommended to be used by anyone younger than 18 years of age.

How to take Cystara?

Cystaran eye drops are typically administered once a day while you're awake. Follow the instructions on your prescription label, and review all medication guides and instructions sheets. Do not use the mouth for talking. Cystaran Eye Drops are designed for use only on the eyes.

Cystaran eye drops are generally applied once per hour when you're awake. Cystadrops are typically applied four times a day. Follow the instructions of your physician for dosage with care. Do not use contact lenses that are soft. The preservative contained in this medication may permanently stain lenses. Make sure to take the medicine for at least 15 minutes prior to placing your contact lenses. Wash your hands after applying eye medications.

To apply the drops to your eyes To apply the eye drops, tilt your head to a slight angle and then pull your lower eyelids to create an eyelid pocket. Place the dropper over the eye, and then squeeze the drop into this pocket. Then, close your eyes for 1 to 2 minutes. Make sure you only use the drops prescribed by your doctor. Do not touch the edge of your eyedropper or put the dropper directly onto your eyes. A dropper that is contaminated could affect your eyes and result in severe vision issues.

Storing Cystaran eye drops:

  • Make sure to keep the bottle in its original carton.
  • Keep Cystaran in an upright freezer until you are ready to use it. Then, let it thaw for 24 hours prior to the first use. Then, keep the bottle in a tightly sealed container in the refrigerator or at ambient temperature. Don't refreeze the bottle after it has thawed.
  • Keep cystadrops in the refrigerator. After opening the bottle for the first time and storing it in a refrigerator or at room temperature, tightly close it and secure it from light. Don't refrigerate the bottle immediately after opening it.

Dispose of the bottle after a week of usage, regardless of whether there is medicine in it. If you are using Cystaran, take a fresh bottle from the freezer within the time it takes to allow the bottle to thaw for 24 hours so you won't be unable to take a dose.

Details on dosage

Usual Adult Dose for Corneal Cystine Crystal Accumulation:

Inject a drop of solution into each eye at least once every hour during the day for a week; then, discard the drop after one week of usage.

Treatment for corneal cystine crystals in patients suffering from cystinosis

Usual Pediatric Dose for Corneal Cystine Crystal Accumulation:

Inject a drop into each eye at least once every hour during the day, and then discard it after a week of usage.

Use: Treatment for corneal cystine crystals in patients suffering from cystinosis.

What happens if I miss the dose?

Utilize the medication whenever you remember, and then you can return to your regular routine. Avoid taking two doses at once.

What happens if I overdose?

A dose of cysteamine that is overdosed is not likely to pose a risk. You should seek medical attention in an emergency or contact the poison help line at 1-800-222-1222 in the event that someone has swallowed the medicine accidentally.

What should be avoided?

The dose you take could alter if you switch to an alternative type or dosage of the medicine. Make sure you are using only the strength and dosage the doctor recommends.

Side effects of Cystaran

Seek medical attention immediately. Get medical attention immediately if you notice symptoms of an allergic reaction. Cystaran drops for your eyes: hives, breathing problems, and swelling of your lips, face, and tongue.

Contact your doctor immediately. If you suffer from:

  • Increased pressure in the skull headaches that can be severe Ringing in your ears, dizziness, nausea, and vision issues eye pain.

Common Cystaran adverse effects could include:

  • Eye discomfort, redness, itching, or irritation
  • Vision issues;
  • Headache or
  • Greater sensitivity to increased sensitivity to

This is not a comprehensive list of possible side effects, and other side effects could be present. Consult your physician for advice regarding medical effects. You can report symptoms to the FDA at 1-800-FDA-1088.