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Resources on cystinuria management

Helpful printable materials to have at your fingertips

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AUA Kidney Stone Guidelines

A summary of evidence-based recommendations from the American Urological Association (AUA) on the medical management of cystine stones.

AUA Guidelines
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Dosing guide for THIOLA EC

How to start, monitor, and adjust THIOLA EC dosage to optimize treatment and help patients with cystinuria prevent stone formations.

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INDICATIONS AND USAGE: THIOLA® EC (tiopronin) delayed-release tablets is indicated, in combination with high fluid intake, alkali, and diet modification, for the prevention of cystine stone formation in adults and pediatric patients ≥20 kg with severe homozygous cystinuria, who are not responsive to these measures alone.

Important Safety Information

CONTRAINDICATIONS: THIOLA EC is contraindicated in patients with hypersensitivity to tiopronin or any other components of THIOLA EC.

WARNINGS AND PRECAUTIONS:

  • Proteinuria: Proteinuria, including nephrotic syndrome, and membranous nephropathy, has been reported with tiopronin use. Pediatric patients receiving >50 mg/kg of tiopronin per day may be at increased risk for proteinuria. Monitor patients for the development of proteinuria and discontinue therapy in patients who develop proteinuria.
  • Hypersensitivity Reactions: Hypersensitivity reactions (drug fever, rash, fever, arthralgia and lymphadenopathy) have been reported.

ADVERSE REACTIONS: The most common adverse reactions (≥10%) are nausea, diarrhea or soft stools, oral ulcers, rash, fatigue, fever, arthralgia, proteinuria, and emesis.

DRUG INTERACTIONS: Avoid alcohol consumption 2 hours before and 3 hours after taking THIOLA EC as THIOLA EC is released faster in the presence of alcohol.

SPECIFIC POPULATIONS:

  • Lactation: Breastfeeding is not recommended during treatment with THIOLA EC.
  • Geriatric Use: Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection, and it may be useful to monitor renal function.

You may report negative side effects to Retrophin® Medical Information at 1-877-659-5518, or to the FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

Please see full THIOLA EC Prescribing Information.