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Prescribing Information

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Talk to Your Doctor

Your doctor may have already prescribed CYSTARAN. If not, talk to your doctor about whether CYSTARAN is right for you or your child. Here are some questions you may find helpful when speaking with your doctor:

  1. What are corneal crystals?
  2. How are CYSTARAN eye drops different from oral cysteamine therapy?
  3. How does CYSTARAN work?
  4. How do I use CYSTARAN?
  5. What if more than one drop of CYSTARAN goes into the eye?
  6. Are there any side effects with CYSTARAN?
  7. What results should I see with CYSTARAN therapy?
  8. Why doesn’t oral medication help with the photophobia and other eye symptoms?
  9. Will CYSTARAN therapy be needed forever?

For information about CYSTARAN, please call: 1‑877‑534‑9627.


CYSTARAN (CYSTEAMINE OPHTHALMIC SOLUTION) 0.44% STERILE is a cystine-depleting agent indicated for the treatment of corneal cystine crystal accumulation in patients with cystinosis.

Important Safety Information:

To minimize contaminating the dropper tip and solution, care should be taken not to touch the eyelids or surrounding areas with the dropper tip of the bottle. Keep bottle tightly closed when not in use.

There have been reports of benign intracranial hypertension (or pseudotumor cerebri) associated with oral cysteamine treatment that has resolved with the addition of diuretic therapy. There have also been reports associated with ophthalmic use of cysteamine; however, all of these patients were on concurrent oral cysteamine.

CYSTARAN contains benzalkonium chloride, which may be absorbed by soft contact lenses. Contact lenses should be removed prior to application of solution and may be reinserted 15 minutes following its administration.

CYSTARAN is for topical ophthalmic use only.

The most frequently reported ocular adverse reactions occurring in ≥ 10% of patients were sensitivity to light, redness, and eye pain/irritation, headache and visual field defects.