Skip to Content
Not all colorectal cancer treatments are the same. Find out more >

Drug interactions between Cytoxan and FluLaval

Results for the following 2 drugs:
Cytoxan (cyclophosphamide)
FluLaval (influenza virus vaccine, inactivated)

Interactions between your selected drugs


cyclophosphamide ↔ influenza virus vaccine, inactivated

Applies to:Cytoxan (cyclophosphamide) and FluLaval (influenza virus vaccine, inactivated)

If you are currently being treated or have recently been treated with cyclophosphamide, you should let your doctor know before receiving influenza virus vaccine, inactivated. Depending on the dose and length of time you have been on cyclophosphamide, you may have a reduced response to the vaccine. In some situations, your doctor may want to delay vaccination to give your body time to recover from the effects of cyclophosphamide therapy. If you have recently been vaccinated with influenza virus vaccine, inactivated, your doctor may choose to postpone treatment with cyclophosphamide for a couple of weeks. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Switch to professional interaction data

Drug Interaction Classification

The classifications below are a guideline only. The relevance of a particular drug interaction to a specific patient is difficult to determine using this tool alone given the large number of variables that may apply.

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.

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

Disclaimer: Every effort has been made to ensure that the information provided by Multum is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. Multum's information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill, knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate that the drug or combination is safe, effective, or appropriate for any given patient. Multum Information Services, Inc. does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. Copyright 2000-2017 Multum Information Services, Inc. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse, or pharmacist.