Tiopronin

FDA label, Mission Pharmacal Company, oral, effective 2026-08-27. Full label on DailyMed

Patient handout

Looking up MedlinePlus…

From MedlinePlus, U.S. National Library of Medicine

Quoted from the FDA label. Product labels differ by manufacturer and change over time; confirm against the label for the product you are using.

Reducing and Complexing Thiol

Dosing in kidney impairment

Adjust THIOLA dosage to maintain urinary cystine concentration less than 250 mg/L. Assess for proteinuria before treatment and every 3 to 6 months during treatment [see Warnings and Precautions]. Discontinue THIOLA in patients who develop proteinuria, and monitor urinary protein and renal function. Consider restarting THIOLA treatment at a lower dosage after resolution of proteinuria. ------------------------------------------DOSAGE AND ADMINISTRATION-------------------------------------

Contraindications

4 CONTRAINDICATIONS THIOLA is contraindicated in patients with hypersensitivity to tiopronin or any other components of THIOLA [see Warnings and Precautions (5.2)]. ----------------------------------------------CONTRAINDICATIONS------------------------------------------ • Hypersensitivity to tiopronin or any component of THIOLA (4)

Supply and cost

Drug shortage status

Loading
Source: FDA Drug Shortages Database via openFDA

Recalls (last 24 months)

Loading
Source: FDA Enforcement Reports via openFDAFDA recalls and safety alerts

Therapeutic equivalence (Orange Book)

Loading
Source: FDA Orange Book data filesSearch the Orange Book

Price ladder

Not the price at the counter
Loading

These are not what a patient pays at the pharmacy counter. They are what pharmacies, health plans, and government buyers pay, before manufacturer rebates. A patient's cost depends on their insurance (copay, coinsurance, or deductible) or the pharmacy's cash price.

VA Federal Supply ScheduleCMS NADACMedicare Part D plan filesMedicaid State Drug Utilization Data

Calculators for tiopronin