Cyclophosphamide
Uses of Cyclophosphamide
Cyclophosphamide is a chemotherapy medicine used to treat various cancers and suppress the immune system.
It is commonly used for:
- Lymphoma and leukaemia: Treats these blood cancers.
- Multiple myeloma: Manages this cancer of the bone marrow.
- Organ transplant rejection prevention: Used to suppress the immune system and help prevent organ rejection, as prescribed by your doctor.
Side effects of Cyclophosphamide
Myelosuppression (bone marrow activity is decreased, resulting in fewer red blood cells, white blood cells, and platelets)
Nausea and vomiting
Alopecia (hair loss)
Hemorrhagic cystitis (pain during urination and blood in the pee)
Gonadal dysfunction leading to infertility
How Cyclophosphamide works
- Cyclophosphamide is a prodrug, meaning it is inactive when taken and is converted into its active form by the liver.
- The active form attaches to DNA within cells, causing cross-links that prevent the DNA strands from separating properly.
- This stops the DNA from being copied, which particularly affects rapidly dividing cells such as cancer cells, leading to their death. The same mechanism also suppresses the immune system, which is why Cyclophosphamide is used to help prevent organ transplant rejection.
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Expert Advice
Dosage Forms Available
- Cyclophosphamide is available as both oral tablets and an injectable powder for intravenous administration.
Age and Dose Restrictions
- Cyclophosphamide is typically meant for use in adults.
Contraindications
- The medicine is contraindicated in patients with a known hypersensitivity to Cyclophosphamide. Patients with severe bone marrow suppression and those with urinary outflow obstruction should avoid using this medicine.
Other Medications to Avoid
- Cyclophosphamide may interact with alkylating agents (e.g., bendamustine, busulfan), allopurinol and blood thinners (e.g., warfarin, coumadin).
Overdose and Missed Dose
- Overdose of Cyclophosphamide may result in severe toxic reactions. Symptoms may include myelosuppression, nausea, vomiting, and diarrhoea. If you suspect an overdose, seek immediate medical attention.
- If a dose of this medicine is missed, it should be taken as soon as possible. However, the missed dose should be skipped if it is nearly time for the next dose.
Management of Side Effects
Most side effects are temporary and generally harmless and resolve when discontinuing this medicine. However, if you experience any severe side effects or worsening symptoms, please consult your doctor.
- Stay well-hydrated to help manage some side effects like nausea and vomiting.
- Taking the medication after meals can help manage gastrointestinal side effects like nausea and vomiting.
Use in Driving and Operating Machinery
- Cyclophosphamide may cause dizziness or confusion, which can affect your ability to drive or operate machinery. Avoid these activities if you experience these side effects.
Use in Pregnancy and Lactation
- Cyclophosphamide is classified as Pregnancy Category D. It can cause foetal harm and should only be used during pregnancy if the potential benefits outweigh the risks. The medicine is not recommended for use while breastfeeding as it can cause harm to nursing infants.
Caution in Other Conditions
- Caution should be exercised when using Cyclophosphamide in patients with bone marrow depression due to the potential risk of myelosuppression. The medicine should also be used with caution in patients with cardiac disease due to the potential risk of cardiotoxicity.
Special Dietary and Lifestyle Recommendations
- Stay well-hydrated, especially during treatment periods, to help flush the medication from your system and prevent bladder issues.
Frequently asked questions
Can Cyclophosphamide cause secondary cancers?
Long-term use of Cyclophosphamide can increase the risk of developing secondary cancers such as bladder cancer and myelodysplastic syndrome.
What Is the Duration of Treatment with Cyclophosphamide?
The duration of treatment with Cyclophosphamide varies from patient to patient, depending on the condition being managed and the individual's response to treatment. It is vital to follow your doctor's instructions regarding the length of treatment.
Is It Safe to Take Cyclophosphamide daily?
The daily use of Cyclophosphamide depends on the individual patient's condition and the doctor's prescription. It is crucial to follow your doctor's instructions regarding dosage and duration of treatment.
Is Cyclophosphamide a steroid?
No, Cyclophosphamide is not a steroid. It is primarily classified as an antineoplastic and immunosuppressive agent, which means it is used to prevent or inhibit the growth and spread of cancerous cells.
Does the Cyclophosphamide have any effect on sleep?
Cyclophosphamide itself does not directly affect sleep. However, side effects like nausea and discomfort may indirectly affect your sleep quality. Always consult your doctor if you experience serious sleep disturbances.
Does Cyclophosphamide have an effect on appetite?
There is no direct reference indicating that Cyclophosphamide has an effect on appetite. If you notice significant changes in your appetite while taking this medicine, consult your doctor.
Can Cyclophosphamide cause changes in menstruation?
Yes, Cyclophosphamide can lead to amenorrhoea, which is the absence of menstruation in women.
List of medicines for Cyclophosphamide
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