Tiopronin: Side Effects, Uses & Monitoring
Tiopronin delayed-release tablets are indicated, in combination with high fluid intake, alkali, and diet modification, for the prevention of cystine stone formation in adults and pediatric patients 9 years of age and old
- Data source
- FDA labeling via NIH DailyMed (label 749257d9…)
- Label version
- current
- Last reviewed
- 2026
Reported adverse reactions
Reactions listed in current FDA labeling, with the highest frequency reported across summarized placebo-controlled trials.
No structured frequency data available in current labeling. Consult the official label.
Labeled uses (from FDA prescribing information)
Tiopronin delayed-release tablets are indicated, in combination with high fluid intake, alkali, and diet modification, for the prevention of cystine stone formation in adults and pediatric patients 9 years of age and older with severe homozygous cystinuria, who are not responsive to these measures alone. Additional pediatric use information is approved for Mission Pharmacal Company’s Thiola EC (tiopronin delayed-release ) tablets . However, due to Mission Pharmacal Company’s marketing exclusivity rights, this drug product is not labeled with that information.
Frequently Asked Questions
What is Tiopronin used for?
FDA labeling lists the approved uses shown above under "Labeled uses." This summary is informational; only a qualified prescriber can determine whether a medication is appropriate for you.
What are the most commonly reported side effects of Tiopronin?
Current labeling for this ingredient does not include a structured frequency table that we can reproduce. Review the official label linked below.
Does Tiopronin require lab monitoring?
Monitoring needs vary. Ask your healthcare provider whether any lab tests apply while taking Tiopronin.
Where does this information come from?
All clinical facts on this page were extracted from the current FDA-registered product labeling for this ingredient, published by manufacturers through NIH DailyMed. See the source link below.
Medical disclaimer: Educational content extracted from public FDA labeling. Not medical advice. Always consult a qualified healthcare professional before starting, stopping, or changing any medication.