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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 is a cystine-depleting agent indicated for the treatment of corneal cystine crystal accumulation in patients with cystinosis.

Important Safety Information:

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