About cysteamine bitartrate
Cysteamine cystine-depleting agent
Used for
- Treats nephropathic cystinosis by reducing cystine buildup in cells.
Usual adult dose
Immediate-release: usually 1.3 g/m² daily, divided into four doses; adjusted to cystine levels.
Usual dose in children
Usually 1.3 g/m² daily, divided into four doses; adjusted to cystine levels.
Common side effects
- Nausea, vomiting, diarrhea, and abdominal pain
- Reduced appetite or unpleasant breath and body odor
- Rash or skin changes
- Fatigue or headache
Important warnings
- Requires regular blood and urine monitoring, including cystine levels.
- Can cause serious skin or bone changes, especially at high doses.
- May cause stomach or intestinal ulcers or bleeding.
- Do not crush or chew delayed-release forms; formulations are not interchangeable.
Pregnancy
Human pregnancy data are limited. Use requires specialist assessment of benefits and potential risks.
Breastfeeding
It is unknown whether cysteamine passes into human milk; breastfeeding safety is not established.
Interactions
- Iron-containing medicines may reduce absorption; separate doses as directed.
- Food and antacids can affect absorption; follow product-specific timing instructions.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.