Etoposide Phosphate – Uses, Dosage, Side Effects, Interactions

Last updated: February 8, 2026Reviewed date: February 8, 2026Reading time: 54 min read
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Etoposide Phosphate is a phosphate salt of a semisynthetic derivative of podophyllotoxin. Etoposide binds to the enzyme topoisomerase II, inducing double-strand DNA breaks, inhibiting DNA repair, and resulting in decreased DNA synthesis and tumor cell proliferation. Cells in the S and G2 phases of the cell cycle are...

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বাংলা রোগী নোট এখনো যোগ করা হয়নি। পোস্ট এডিটরে “RX Bangla Patient Mode” বক্স থেকে সহজ বাংলা সারাংশ যোগ করুন।

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Article Summary

Etoposide Phosphate is a phosphate salt of a semisynthetic derivative of podophyllotoxin. Etoposide binds to the enzyme topoisomerase II, inducing double-strand DNA breaks, inhibiting DNA repair, and resulting in decreased DNA synthesis and tumor cell proliferation. Cells in the S and G2 phases of the cell cycle are most sensitive to this agent. (NCI04) A semisynthetic derivative of podophyllotoxin that exhibits antitumor activity. Etoposide inhibits DNA synthesis by...

Key Takeaways

  • This article explains Mechanism of action in simple medical language.
  • This article explains Indications in simple medical language.
  • This article explains Contraindications in simple medical language.
  • This article explains Dosage in simple medical language.
Educational health guideWritten for patient understanding and clinical awareness.
Reviewed content workflowUse writer and reviewer profiles for stronger trust.
Emergency safety firstUrgent warning signs are highlighted below.

Seek urgent medical care if you notice

These warning signs are general safety guidance. Local emergency numbers and clinical judgment should always come first.

  • Severe symptoms, breathing difficulty, fainting, confusion, or rapidly worsening illness.
  • New weakness, severe pain, high fever, or symptoms after a serious injury.
  • Any symptom that feels urgent, unusual, or unsafe for the patient.
1

Emergency now

Use emergency care for severe, sudden, rapidly worsening, or life-threatening symptoms.

2

See a doctor

Book a professional medical evaluation if symptoms persist, worsen, recur often, affect daily activities, or occur in a high-risk patient.

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Learn safely

Use this article to understand possible causes, tests, treatment options, prevention, and questions to ask your clinician.

Etoposide Phosphate is a phosphate salt of a semisynthetic derivative of podophyllotoxin. Etoposide binds to the enzyme topoisomerase II, inducing double-strand DNA breaks, inhibiting DNA repair, and resulting in decreased DNA synthesis and tumor cell proliferation. Cells in the S and G2 phases of the cell cycle are most sensitive to this agent. (NCI04)

A semisynthetic derivative of podophyllotoxin that exhibits antitumor activity. Etoposide inhibits DNA synthesis by forming a complex with topoisomerase II and DNA. This complex induces breaks in double-stranded DNA and prevents repair by topoisomerase II binding. Accumulated breaks in DNA prevent entry into the mitotic phase of cell division and lead to cell death. Etoposide acts primarily in the G2 and S phases of the cell cycle.

Mechanism of action

Etoposide inhibits DNA topoisomerase II, thereby inhibiting DNA re-ligation. This causes critical errors in DNA synthesis at the premitotic stage of cell division and can lead to apoptosis of the cancer cell. Etoposide is cell cycle-dependent and phase-specific, affecting mainly the S and G2 phases of cell division. Inhibition of the topoisomerase II alpha isoform results in the anti-tumor activity of etoposide. The drug is also capable of inhibiting the beta isoform but inhibition of this target is not associated with the anti-tumor activity. It is instead associated with the carcinogenic effect.

Etoposide is an antineoplastic agent and an epipodophyllotoxin (a semisynthetic derivative of the podophyllotoxins). It inhibits DNA topoisomerase II, thereby ultimately inhibiting DNA synthesis. Etoposide is cell cycle-dependent and phase-specific, affecting mainly the S and G2 phases. Two different dose-dependent responses are seen. At high concentrations (10 µg/mL or more), lysis of cells entering mitosis is observed. At low concentrations (0.3 to 10 µg/mL), cells are inhibited from entering prophase. It does not interfere with microtubular assembly. The predominant macromolecular effect of etoposide appears to be the induction of DNA strand breaks by an interaction with DNA-topoisomerase II or the formation of free radicals.

Indications

  • For use in combination with other chemotherapeutic agents in the treatment of refractory testicular tumors and as first-line treatment in patients with small cell lung cancer. Also used to treat other malignancies such as lymphoma, non-lymphocytic leukemia, and glioblastoma multiforme.
  • Acute Lymphoblastic Leukemia (ALL)
  • Acute Myeloid Leukemia (AML)
  • Advanced Hodgkin’s Lymphoma
  • Ewing’s Sarcoma
  • Gestational Trophoblastic Disease
  • Merkel cell cancer
  • Multiple Myeloma (MM)
  • Neuroblastoma (NB)
  • Neuroendocrine Tumors
  • Non-Hodgkin’s Lymphoma (NHL)
  • Non-Small Cell Lung Carcinoma (NSCLC)
  • Ovarian Cancer
  • Prostate Cancer
  • Retinoblastoma
  • Sarcoma, Osteogenic
  • Small Cell Lung Cancer (SCLC)
  • Wilms’ tumor
  • Locally advanced Thymoma
  • Metastatic Thymic Cancer
  • Refractory Sarcoma
  • Refractory Testicular cancer

Use in Cancer

Etoposide phosphate is approved to be used with other drugs to treat:

  • Small cell lung cancer. It is used with cisplatin as first-line therapy.
  • Testicular cancer. It is used in patients who have already been treated with surgery, radiation therapy, or other chemotherapy and have not gotten better.

Etoposide phosphate is also available in a different form called etoposide.

Contraindications

The following conditions are contraindicated with this drug. Check with your physician if you have any of the following:

  • a bad infection
  • low amount of albumin proteins in the blood
  • excess body acid
  • decreased function of bone marrow
  • anemia
  • decreased blood platelets
  • a significant decrease in certain blood clotting cells called platelets
  • low levels of white blood cells
  • low levels of a type of white blood cell called neutrophils
  • bleeding
  • a type of infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।" data-rx-term="inflammation" data-rx-definition="Inflammation is the body’s response to injury, infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।">inflammation of the lung called interstitial pneumonitis
  • a condition where there is formation of fibrous tissue in the lung called pulmonary chronic injury or inflammation. সহজ বাংলা: অতিরিক্ত দাগের মতো টিস্যু তৈরি হওয়া।" data-rx-term="fibrosis" data-rx-definition="Fibrosis means excess scar-like tissue formation after chronic injury or inflammation. সহজ বাংলা: অতিরিক্ত দাগের মতো টিস্যু তৈরি হওয়া।">fibrosis
  • damage to the liver and infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।" data-rx-term="inflammation" data-rx-definition="Inflammation is the body’s response to injury, infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।">inflammation
  • pregnancy
  • a patient who is producing milk and breastfeeding
  • moderate to severe kidney impairment
  • a significant drop in a certain type of white blood cell called a bacterial infection. সহজ বাংলা: ব্যাকটেরিয়ার বিরুদ্ধে লড়াই করা শ্বেত রক্তকণিকা।" data-rx-term="neutrophil" data-rx-definition="Neutrophil is a white blood cell important for fighting bacterial infection. সহজ বাংলা: ব্যাকটেরিয়ার বিরুদ্ধে লড়াই করা শ্বেত রক্তকণিকা।">neutrophil

Dosage

Strengths: 20 mg/mL; 50 mg

Testicular Cancer

In combination with other approved chemotherapeutic agents:

  • 50 to 100 mg/m2 IV over 30 to 60 minutes once a day on days 1 through 5 every 3 to 4 weeks to 100 mg/m2 IV over 30 to 60 minutes once a day on days 1, 3, and 5 every 3 to 4 weeks

Small Cell Lung Cancer

IV:
In combination with other approved chemotherapeutic agents:

  • 35 mg/m2 IV over 30 to 60 minutes once a day for 4 days to 50 mg/m2 IV over 30 to 60 minutes once a day for 5 days every 3 to 4 weeks

In combination with other approved chemotherapeutic agents:

  • The recommended dose is 2 times the IV dose rounded to the nearest 50 mg (i.e., 2 times 35 mg/m2 IV once a day for 4 days to 50 mg/m2 IV once a day for 5 days equaling 70 mg/m2 orally once a day for 4 days to 100 mg/m2 orally once a day for 5 days)

Side Effects

The Most Common

  • swelling, pain, redness, or burning at the injection site
  • pain, burning, irritation, or skin changes where the injection was given;
  • severe nausea and vomiting;
  • easy bruising, unusual bleeding, purple or red spots under your skin; or
  • low white blood cell counts–fever, mouth sores, skin sores, sore throat, cough, trouble breathing.
  • nausea
  • vomiting
  • sores in the mouth and throat
  • stomach pain
  • diarrhea
  • constipation
  • loss of appetite or weight
  • unusual tiredness or weakness
  • pale skin
  • fainting
  • dizziness
  • hair loss
  • pain, burning, or tingling in the hands or feet
  • eye pain
  • rash
  • hives
  • itching
  • difficulty breathing or swallowing
  • fast, irregular, or pounding heartbeat
  • seizures
  • yellowing of the skin or eyes

More Common

  • Nausea (interferes with the ability to eat and is unrelieved with prescribed medication)
  • Vomiting (vomiting more than 4-5 times in a 24-hour period)
  • Diarrhea (4-6 episodes in a 24-hour period)
  • Unusual bleeding or bruising
  • Black or tarry stools, or blood in your stools or urine
  • Extreme fatigue (unable to carry on self-care activities)
  • Mouth sores (painful redness, swelling or ulcers)
  • Swelling, redness, and/or pain in one leg or arm and not the other
  • Numbness or tingling in your fingers or toes
  • Yellowing of the skin or eyes
  • Pain, redness or swelling at the IV site

Rare

  • pain, burning, irritation, or skin changes where the injection was given;
  • severe nausea and vomiting;
  • easy bruising, unusual bleeding, purple or red spots under your skin; or
  • low white blood cell counts–fever, mouth sores, skin sores, sore throat, cough, trouble breathing.
  • nausea, vomiting;
  • constipation;
  • fever;
  • trouble swallowing; or
  • unusual or unpleasant taste in the mouth.

Drug Interactions

Pregnancy and Lactation

AU TGA pregnancy category: D
US FDA pregnancy category: D

Pregnancy

Using etoposide phosphate may increase your risk of developing other types of cancer, such as leukemia. Talk with your doctor about your specific risk. Etoposide can harm an unborn baby if the mother or the father is using this medicine. If you are a woman, do not use etoposide if you are pregnant. Etoposide, the active moiety of etoposide phosphate is, teratogenic in mice and rats. Advise pregnant women of the potential hazard to a fetus. Advise women of childbearing potential to avoid becoming pregnant., In the U.S. general population, the estimated background risk of major birth defects and, miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively

Breastfeeding

Most sources consider breastfeeding to be contraindicated during maternal antineoplastic drug therapy. It may be possible to breastfeed safely during intermittent therapy with this drug after an appropriate period of breastfeeding abstinence; however, experts differ on the appropriate length of abstinence. Chemotherapy may adversely affect the normal microbiome and chemical makeup of breast milk. Women who receive chemotherapy during pregnancy are more likely to have difficulty nursing their infant. It might be possible to breastfeed safely during intermittent therapy with etoposide after an appropriate period of breastfeeding abstinence. A period of at least 24 hours is required after a dose of 80 mg/sq m or less. Others have suggested an abstinence period of 72 hours after etoposide use.[1] Chemotherapy may adversely affect the normal microbiome and chemical makeup of breast milk.[2] Women who receive chemotherapy during pregnancy are more likely to have difficulty nursing their infant.

What special precautions should I follow?

Before receiving an etoposide injection,

  • tell your doctor and pharmacist if you are allergic to etoposide, etoposide phosphate (Etopophos), any other medications, or any of the ingredients in etoposide or etoposide phosphate injection. Ask your pharmacist for a list of the ingredients.
  • tell your doctor and pharmacist what other prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking or plan to take. Be sure to mention any of the following: cisplatin (Platinol), and cyclosporine (Gengraf, Neoral, Sandimmune). Your doctor may need to change the doses of your medications or monitor you carefully for side effects. Many other medications may also interact with etoposide, so be sure to tell your doctor about all the medications you are taking, even those that do not appear on this list.
  • tell your doctor if you have or have ever had kidney disease.
  • tell your doctor if you are pregnant, plan to become pregnant, or are breastfeeding. You should not become pregnant or breast-feed while you are receiving an etoposide injection. If you become pregnant while receiving an etoposide injection, call your doctor. Etoposide may harm the fetus.

Precautions:

  • Before starting etoposide treatment, make sure you tell your doctor about any other medications you are taking (including prescription, over-the-counter, vitamins, herbal remedies, etc.).   Do not take aspirin, products containing aspirin unless your doctor specifically permits this.
  • Do not receive any kind of immunization or vaccination without your doctor’s approval while taking etoposide.
  • Inform your health care professional if you are pregnant or may be pregnant prior to starting this treatment. Pregnancy category D (etoposide may be hazardous to the fetus.  Women who are pregnant or become pregnant must be advised of the potential hazard to the fetus).
  • For both men and women: Do not conceive a child (get pregnant) while taking etoposide. Barrier methods of contraception, such as condoms, are recommended. Discuss with your doctor when you may safely become pregnant or conceive a child after therapy.
  • Do not breast feed while taking this medication.

Self-care tips:

  • Apply warm compresses if you have any pain, redness or swelling at the IV site, and notify your doctor.
  • Drink at least two to three quarts of fluid every 24 hours, unless you are instructed otherwise.
  • You may be at risk of infection so try to avoid crowds or people with colds, and report fever or any other signs of infection immediately to your healthcare provider.
  • Wash your hands often.
  • To help treat/prevent mouth sores, use a soft toothbrush, and rinse three times a day with 1/2 to 1 teaspoon of baking soda and/or 1/2 to 1 teaspoon of salt mixed with 8 ounces of water.
  • Use an electric razor and a soft toothbrush to minimize bleeding.
  • Avoid contact sports or activities that could cause injury.
  • To reduce nausea, take anti-nausea medications as prescribed by your doctor, and eat small, frequent meals.
  • Avoid sun exposure.  Wear SPF 15 (or higher) sunblock and protective clothing.
  • In general, drinking alcoholic beverages should be kept to a minimum or avoided completely.  You should discuss this with your doctor.
  • Get plenty of rest.
  • Maintain good nutrition.
  • If you experience symptoms or side effects, be sure to discuss them with your healthcare team.  They can prescribe medications and/or offer other suggestions that are effective in managing such problems.

References

Doctor visit helper

Prepare before seeing a doctor

A simple rural-patient checklist to help you explain symptoms clearly, ask better questions, and avoid unsafe self-treatment.

Safety note: This is not a prescription or diagnosis. For severe symptoms, pregnancy danger signs, children with serious illness, chest pain, breathing difficulty, stroke-like weakness, or major injury, seek urgent care.

Which doctor may help?

Start with a registered doctor or the nearest qualified health center.

What to tell the doctor

  • Write when the problem started and how it changed.
  • Bring old prescriptions, investigation reports, and current medicines.
  • Write allergies, pregnancy status, diabetes, kidney/liver disease, and major past illnesses.
  • Bring one family member if the patient is weak, elderly, confused, or a child.

Questions to ask

  • What is the most likely cause of my symptoms?
  • Which danger signs mean I should go to hospital quickly?
  • Which tests are necessary now, and which can wait?
  • How should I take medicines safely and what side effects should I watch for?
  • When should I come for follow-up?

Tests to discuss

  • Vital signs: temperature, pulse, blood pressure, oxygen saturation
  • Basic physical examination by a clinician
  • CBC, urine test, blood sugar, or imaging only when clinically needed

Avoid these mistakes

  • Do not use antibiotics, steroid tablets/injections, or strong painkillers without proper medical advice.
  • Do not hide pregnancy, kidney disease, ulcer, allergy, or blood thinner use.
  • Do not delay emergency care when danger signs are present.

Medicine safety and first-aid guide

This section is for patient education only. It does not replace a doctor, pharmacist, or emergency care.

Safe first steps

  • Avoid heavy lifting, sudden bending, and prolonged bed rest.
  • Use comfortable posture and gentle movement as tolerated.
  • Discuss physiotherapy, X-ray, or MRI only when clinically needed.

OTC medicine safety

  • For mild back pain, pain-relief medicine may be discussed with a doctor or pharmacist.
  • Avoid repeated painkiller use if you have kidney disease, stomach ulcer, uncontrolled blood pressure, or are taking blood thinners.

Avoid these mistakes

  • Do not start antibiotics without a proper medical decision.
  • Do not use steroid tablets or injections casually for quick relief.
  • Do not delay emergency care because of home remedies.

Get urgent help if

  • Back pain with leg weakness, numbness around private area, loss of urine/stool control, fever, cancer history, or major injury needs urgent care.
Medicine names, dose, and timing must be decided by a qualified clinician or pharmacist after checking age, pregnancy, allergy, other diseases, and current medicines.

For rural patients and family caregivers

Patient health record and symptom diary

Write your symptoms, medicines already taken, test results, and questions before visiting a doctor. This note stays on your device unless you print or copy it.

Doctor to discuss: Medicine doctor / pediatrician for children / qualified clinician
Tests to discuss with doctor
  • Temperature chart and hydration assessment
  • CBC with platelet count if fever persists or dengue/other infection is possible
  • Urine test, malaria/dengue tests, chest evaluation, or blood culture only when clinically indicated
Questions to ask
  • What is the most likely cause of my symptoms?
  • Which warning signs mean I should go to emergency care?
  • Which tests are really needed now?
  • Which medicines are safe for my age, pregnancy status, allergy, kidney/liver/stomach condition, and current medicines?
  • Do I need antibiotics, or is this more likely viral?

Emergency warning signs such as chest pain, severe breathing difficulty, sudden weakness, confusion, severe dehydration, major injury, or loss of bladder/bowel control need urgent medical care. Do not wait for online information.

Safe pathway to proper treatment

Care roadmap for: Etoposide Phosphate – Uses, Dosage, Side Effects, Interactions

Use this simple roadmap to understand the next safe steps. It is educational and does not replace examination by a doctor.

Go to emergency care if you notice:
  • Severe or rapidly worsening symptoms
  • Breathing difficulty, chest pain, fainting, confusion, severe weakness, major injury, or severe dehydration
Doctor / service to discuss: Qualified healthcare provider; specialist depends on symptoms and examination.
  1. Step 1

    Check danger signs first

    If danger signs are present, seek emergency care and do not wait for online information.

  2. Step 2

    Record the symptom story

    Write when symptoms started, severity, medicines already taken, allergies, pregnancy status, and test results.

  3. Step 3

    Visit a qualified clinician

    A doctor, nurse, or qualified healthcare provider can examine you and decide which tests or treatment are needed.

  4. Step 4

    Do only useful tests

    Do tests after clinical assessment. Avoid unnecessary tests, random antibiotics, or repeated medicines without diagnosis.

  5. Step 5

    Follow up and return early if worse

    If symptoms worsen, new warning signs appear, or treatment is not helping, return for review quickly.

Rural patient practical tips
  • Take a written symptom diary and all previous prescriptions/test reports.
  • Do not hide medicines already taken, even herbal or over-the-counter medicines.
  • Ask which warning signs mean urgent referral to hospital.

This roadmap is for education. A real diagnosis and treatment plan requires history, examination, and clinical judgment.

RX Patient Help

Ask a health question safely

Write your symptom story. A health professional or site editor can review it before any answer is prepared. This box is not for emergency care.

Emergency first: Severe chest pain, breathing trouble, unconsciousness, stroke signs, severe injury, heavy bleeding, or rapidly worsening symptoms need urgent local medical care now.

Frequently Asked Questions

Is this article a replacement for a doctor?

No. It is educational content only. Patients should consult a qualified clinician for diagnosis and treatment.

When should I seek urgent care?

Seek urgent care for severe symptoms, rapidly worsening condition, breathing difficulty, severe pain, neurological changes, or any emergency warning sign.

References

Add references, clinical guidelines, textbooks, journal articles, or trusted medical sources here. You can edit this area from the RX Article Professional Blocks panel.

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