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Cystagon (cysteamine) Disease Interactions

There are 2 disease interactions with Cystagon (cysteamine):


Cysteamine (Includes Cystagon) ↔ alcoholism

Severe Potential Hazard, Moderate plausibility. Applies to: Alcoholism

The use of alcohol may increase the rate of cysteamine release and/or adversely alter the pharmacokinetic properties, as well as the effectiveness and safety. It is recommended to avoid the consumption of alcoholic beverages during treatment with cysteamine.


Cysteamine (Includes Cystagon) ↔ liver disease

Moderate Potential Hazard, Moderate plausibility. Applies to: Liver Disease

The use of cysteamine has been associated with development of hepatic coma in patients with overt hepatic damage. Therapy with cysteamine should be administered cautiously in patients with liver disease.


  1. "Product Information. Cystagon (cysteamine)." Mylan Pharmaceuticals, Morgantown, WV.

Drug Interaction Classification

The classifications below are a general guideline only. It is difficult to determine the relevance of a particular drug interaction to any individual given the large number of variables.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No information available.

Do not stop taking any medications without consulting your healthcare provider.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.