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Table of Contents > Supplements > Cysteine > Interactions
Possible Interactions with: Cysteine
Also listed as: Acetylcysteine; L-Cysteine; N-acetylcysteine; NAC

If you are currently being treated with any of the following medications, you should not use cysteine supplements without first talking to your healthcare provider.

Blood Pressure Medications, Angiotensin-converting Enzyme (ACE) Inhibitors
NAC may enhance the blood pressure-lowering effects of ACE inhibitors, medications commonly used to treat high blood pressure. Examples of ACE inhibitors include benazepril, captopril, enalapril, fosinopril, lisinopril, moexipril, quenipril, ramepril, and trandolapril.

Immunosuppressive Medications
Treatment with NAC may enhance the effectiveness of immunosuppressive medications such as azathioprine, cyclophosphamide, prednisolone, or prednisone. More research in this area is needed.

Cisplatin and Doxorubicin
Laboratory and animal studies have suggested that NAC may reduce the toxic effects associated with both cisplatin and doxorubicin, medications used to treat a variety of cancers. However, scientific studies are needed to see if these effects apply to people.

Nitroglycerin and Isosorbide
Although NAC may enhance the effectiveness of nitroglycerin and isosorbide (two medications commonly used to treat chest pain), this combination may also increase the risk of side effects such as severe headaches and may lead to abnormally low blood pressure.

Topical applications of NAC may increase the effectiveness of oxiconazole, an antifungal medication used for athlete's foot.

Drug Interactions
ACE Inhibitors
Immunosuppressive Medications
Isosorbide Dinitrate

Copyright © 2004 A.D.A.M., Inc

The publisher does not accept any responsibility for the accuracy of the information or the consequences arising from the application, use, or misuse of any of the information contained herein, including any injury and/or damage to any person or property as a matter of product liability, negligence, or otherwise. No warranty, expressed or implied, is made in regard to the contents of this material. No claims or endorsements are made for any drugs or compounds currently marketed or in investigative use. This material is not intended as a guide to self-medication. The reader is advised to discuss the information provided here with a doctor, pharmacist, nurse, or other authorized healthcare practitioner and to check product information (including package inserts) regarding dosage, precautions, warnings, interactions, and contraindications before administering any drug, herb, or supplement discussed herein.

  Uses of this Supplement
Alzheimer's Disease
Cervical Dysplasia
Chronic Obstructive Pulmonary Disease
Cystic Fibrosis
Hepatitis, Viral
Lung Cancer
Macular Degeneration
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  Drugs that Interact
ACE Inhibitors
Immunosuppressive Medications
Isosorbide Dinitrate
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