Herceptin SC (Trastuzumab)
Complete patient guide for uses, dosage, side effects, and safety information
Quick Facts
What Is Herceptin SC Used For?
Herceptin SC is a medication that contains trastuzumab, used primarily for treating breast cancer that tests positive for the HER2 protein.
Primary Uses
It is used to treat early breast cancer after surgery, locally advanced breast cancer, and metastatic breast cancer.
How It Works
Herceptin SC works by binding to the HER2 protein on cancer cells, inhibiting their growth and spread.
Good to know: Herceptin SC is not addictive.
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How to Take Herceptin SC
Herceptin SC is administered as a subcutaneous injection by a healthcare professional.
Dosage Instructions
The recommended dose is 600 mg given as a subcutaneous injection every three weeks.
What If You Miss a Dose?
If you miss an appointment for your injection, reschedule as soon as possible. Your doctor will determine the next dose timing.
Important: Never double your dose if you miss an appointment.
Side Effects
Like all medications, this medicine can cause side effects. Most are mild and temporary, but some require medical attention.
Common Side Effects
These side effects occur relatively frequently and usually don’t require emergency care:
- pain at the injection site
- fatigue
- shortness of breath
- nausea
- diarrhea
- headache
Seek immediate medical attention if you experience:
- swelling of the face, lips, tongue, or throat with difficulty breathing
- abnormal heartbeat
- severe allergic reactions
- chest pain
- severe shortness of breath
Important Warnings
Certain precautions and contraindications must be considered before using Herceptin SC.
Who Should Not Take Herceptin SC
Do not use if you are allergic to trastuzumab or any ingredients, or if you have non-metastatic breast cancer with a left ventricular ejection fraction (LVEF) of less than 45%.
Medical Conditions to Discuss
Discuss any history of heart problems, previous chemotherapy with anthracyclines, breathing issues, or allergies with your doctor.
Pregnancy and Breastfeeding
Herceptin SC may harm an unborn baby. Use effective contraception during treatment and for 7 months after. Breastfeeding is not recommended during treatment and for 7 months after.
Drug Interactions
Certain medications may interact with Herceptin SC.
- anthracyclines (e.g., doxorubicin)
- gemcitabine
- vinorelbine
- taxanes (e.g., paclitaxel, docetaxel)
- radiation therapy
Alcohol & Driving
Be cautious with alcohol consumption and operating machinery while on Herceptin SC.
Alcohol
Consult your doctor about alcohol use during treatment.
Driving and Operating Machinery
Avoid driving or operating machinery if you experience side effects that affect your ability.
Storage
Store Herceptin SC in a refrigerator between 2°C and 8°C. Do not freeze and keep it protected from light.
Overdose Information
If an overdose occurs, contact your doctor immediately. It is unlikely due to administration by a healthcare professional.
Frequently Asked Questions
The time it takes for Herceptin SC to show effects can vary by individual and treatment plan.
There are no specific dietary restrictions mentioned for Herceptin SC.
No, Herceptin SC is not considered addictive.
Do not stop your treatment without consulting your doctor, as it may affect your condition.
Consult your doctor regarding alcohol consumption during treatment.
Weight changes are not specifically mentioned as a side effect of Herceptin SC.
Elderly patients should discuss their health history with their doctor to ensure safe use.
Important Disclaimer
This information is intended for general educational purposes only and should not be considered medical advice. Always consult your healthcare provider or pharmacist before starting, stopping, or changing any medication.
If you think you may have a medical emergency, call your doctor or emergency services immediately.