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Cysteamine bitartrate oral

Important Note

The following information is intended to supplement, not substitute for, the expertise and judgment of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. Consult your healthcare professional before using this drug.





This medication is used to prevent kidney damage and other problems in persons with cystinosis, a hereditary metabolic disorder.

How To Use

Take this medication by mouth exactly as prescribed usually 4 doses a day. During the first few weeks your dose may gradually be increased to allow your body to adjust to the medication. Take this medication with food or just after a meal to reduce stomach upset. For children, open the capsules and sprinkle the contents onto soft food such as applesauce or mashed potatoes just prior to eating.

Side Effects

This medication may initially cause nausea, loss of appetite, tiredness, drowsiness, and diarrhea as your body adjusts to the medication. If these effects continue or become bothersome, inform your doctor. Notify your doctor if you develop: vomiting, a fever, skin rash. If you notice other effects not listed above, contact your doctor or pharmacist.


Tell your doctor if you have: kidney problems, liver disease, high blood pressure, blood disorders, allergies (especially drug allergies). This medication should be used only if clearly needed during pregnancy. Discuss the risks and benefits with your doctor. It is not known if this medication appears in breast milk. Consult your doctor before breast-feeding.

Drug Interactions

Tell your doctor of any over-the-counter or prescription medication you may take. Do not start or stop any medicine without doctor or pharmacist approval.


If overdose is suspected, contact your local poison control center or emergency room immediately.


Laboratory tests will be done periodically while taking this medication to monitor its effects and determine your appropriate dose.

Missed Dose

Try to take each dose at the scheduled time. If you miss a dose, take it as soon as remembered; do not take it if it is within 2 hours of the next dose. Instead, skip the missed dose and resume your usual dosing schedule. Do not "double-up" the dose to catch up.


Store this medication at room temperature between 59 and 86 degrees F (15 to 30 degrees C) away from heat and light. Do not store in the bathroom. Keep this and all medications out of the reach of children.