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# TUSQ 20QD
## Overview
TUSQ 20QD is a medication containing **tudca** (Tauroursodeoxycholic Acid) and is formulated for **oral administration**.
## Primary Indications
Tudca is primarily used for the treatment of **Primary Biliary Cholangitis (PBC)** in adults. It may also be used off-label for other cholestatic liver diseases.
## Adult Dosing
* **Primary Biliary Cholangitis (PBC):** The typical dose is **20 mg/kg per day**, administered orally, either as a single dose or divided into two doses. The product name "TUSQ 20QD" suggests a 20 mg QD (once daily) formulation, which would require calculation of the number of tablets based on patient weight.
## Pediatric Dosing
There is **limited established pediatric dosing** for Tudca. Use in children should be based on expert consultation and available literature, with careful consideration of potential risks and benefits.
## Dose Adjustments
* **Hepatic Impairment:** No specific dose adjustment guidelines are provided for hepatic impairment, but caution is advised.
* **Renal Impairment:** No specific dose adjustment guidelines are provided for renal impairment.
## Contraindications
* Known hypersensitivity to Tudca or any component of the formulation.
* Bowel obstruction.
## Adverse Effects
Common adverse effects may include:
* Diarrhea
* Nausea
* Rash
Less common but serious adverse effects can include:
* Worsening liver function tests (rare)
* Hypersensitivity reactions
## Key Drug Interactions
* **Cholestyramine, Colestipol, Aluminum-containing antacids, Calcium carbonate:** These medications can bind to bile acids and may reduce the absorption of Tudca. Separate administration by at least 2 hours.
* **Fat-soluble vitamins (A, D, E, K):** Malabsorption of fat-soluble vitamins can occur in patients with cholestatic liver disease. Monitoring and supplementation may be necessary.
## Monitoring
* **Liver Function Tests (LFTs):** Regular monitoring of ALT, AST, alkaline phosphatase, and bilirubin is recommended, especially at the initiation of therapy and periodically thereafter.
* **Signs and Symptoms of Liver Disease:** Monitor for clinical signs and symptoms of worsening liver disease.
* **Gastrointestinal Tolerability:** Monitor for diarrhea and nausea.
## Clinical Pearls
* Tudca is a hydrophilic bile acid that can help reduce the accumulation of toxic bile acids in the liver.
* Ensure adequate hydration, especially if diarrhea occurs.
* The "QD" in TUSQ 20QD indicates once-daily dosing, which simplifies administration.
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**Disclaimer:** This information is intended for healthcare professionals. Always consult the most current prescribing information and professional guidelines before making clinical decisions. Dosing and recommendations may vary based on patient-specific factors and local protocols.
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