What is Herceptin?
Herceptin (trastuzumab) is a medication used to treat HER2-positive breast cancer and gastric cancer. HER2 is a protein found in higher amounts in specific cancer cells. Herceptin targets this protein, helping to stop or slow down the growth of cancer cells.
Herceptin is commonly given as an injection and can be part of a treatment plan with chemotherapy or used alone.
It is a targeted therapy focusing on specific proteins or genes in cancer growth.
These are the conditions approved by the FDA for treatment with Herceptin:
- Early-stage HER2-positive breast cancer: Herceptin is used to treat adults with early-stage breast cancer that tests positive for HER2. This cancer may have spread to the lymph nodes or may not have spread but has other high-risk features. Herceptin is often given with chemotherapy drugs like doxorubicin, cyclophosphamide, paclitaxel, or docetaxel. It can also be used alone after different treatments.
- Metastatic HER2-positive breast cancer: For cancer that has spread, Herceptin is combined with paclitaxel as the first treatment option. It can also be used alone for patients who have already received chemotherapy.
- Herceptin for gastric cancer: Herceptin is also used for treating HER2-positive gastric cancer. It is given alongside chemotherapy for cancer that has spread to the stomach or the gastroesophageal junction.
How Does Herceptin Work?
Herceptin targets and blocks the HER2 receptors on the surface of HER2-positive breast cancer cells. These cancer cells have higher amounts of the HER2 protein, which sends signals that make the cells grow.
When Herceptin attaches to these receptors, it prevents the cells from receiving these growth signals, slowing or stopping the growth of the cancer.
This targeted approach helps treat HER2-positive breast cancer by interfering with the process that allows the cancer to spread.
Dose Information and Usage
Herceptin is available in two forms: the traditional intravenous (IV) infusion and the subcutaneous injection (Herceptin Hylecta).
While both forms treat HER2-positive cancer effectively, they differ in how they are administered and the way their dosages are structured.
Herceptin IV infusion is given through an IV or port, while Herceptin Hylecta is injected under the skin.
Dosage Form and Strengths of Herceptin
Herceptin is available in two distinct forms, each with specific dosing:
- Herceptin IV infusion: The dosage is typically based on the patient’s body weight and administered through an IV or port.
- Herceptin Hylecta (Subcutaneous Injection): This is available as a pre-filled syringe containing 600 mg. This form is injected subcutaneously (under the skin), usually in the thigh.
Herceptin Administration
The administration of Herceptin varies depending on whether you are receiving the traditional IV infusion or the subcutaneous injection (Herceptin Hylecta). Here is how each is administered based on your treatment plan:
Herceptin IV Infusion
A healthcare professional typically delivers Herceptin IV infusions at a medical facility. They are given directly into the bloodstream.
The first dose generally takes 90 minutes to administer; subsequent doses usually take 30 minutes.
Recommended Dosage:
- For metastatic breast cancer: The initial dose is 4 mg/kg administered as an IV infusion over 90 minutes. Subsequent doses are 2 mg/kg administered as an IV infusion over 30 minutes once weekly until disease progression.
- For early-stage (adjuvant) breast cancer:
- Option 1: During and after chemotherapy, the initial dose is 4 mg/kg IV infusion over 90 minutes. Weekly doses of 2 mg/kg are given over 30 minutes for 12–18 weeks during chemotherapy. After chemotherapy, 6 mg/kg IV infusion is administered every 3 weeks for 52 weeks.
- Option 2: As a single agent within 3 weeks following chemotherapy, the initial dose is 8 mg/kg IV infusion over 90 minutes, followed by 6 mg/kg IV infusion every 3 weeks for 52 weeks.
- For gastric cancer: The initial dose is 8 mg/kg administered as an intravenous infusion over 90 minutes. The following doses are 6 mg/kg given as an intravenous infusion every three weeks, continuing until disease progression.
Herceptin Hylecta (Subcutaneous Injection)
Herceptin Hylecta is more convenient and is delivered as a subcutaneous injection under the skin (in the thigh). The injection takes about 2 to 5 minutes to administer.
Unlike Herceptin IV infusion, Herceptin Hylecta is given at a fixed dose of 600 mg, regardless of the patient’s weight.
Recommended Dosage:
- For early-stage HER2-positive breast cancer: 600 mg every 3 weeks after the initial dose.
- For metastatic HER2-positive breast cancer: 600 mg every 3 weeks, in combination with chemotherapy drugs like Taxol or as a single treatment following previous chemotherapy regimens.
Both forms of Herceptin should be administered as prescribed by your doctor. If you miss a dose or have concerns about your treatment, contact your doctor immediately.
Herceptin Side Effects
Herceptin can cause a range of side effects. While many of these are mild and manageable, others can be severe and require immediate attention.
Common Herceptin side effects include headache, nausea, and fever, but more serious concerns, such as heart and lung problems, are also possible.
Monitor for these effects and contact your doctor if you experience any unusual symptoms.
Common Side Effects
- Headache
- Diarrhea
- Nausea
- Chills
- Fever
- Insomnia
- Cough
- Rash
- Fatigue or tiredness
- Swelling of hands or feet
Severe Side Effects
- Heart problems (swelling of ankles/legs, shortness of breath, weight gain)
- Lung problems (trouble breathing, cough, fluid in lungs)
- Severe allergic reactions (swelling of face, lips, tongue, or throat)
- Abnormal heartbeat or chest pain
- Severe rash, itching, or hives
- Difficulty breathing or wheezing
- Fever or chills
- Severe fatigue or dizziness
- Increased risk of infections
Herceptin’s long-term side effects can include heart damage, particularly when used with other chemotherapy treatments like anthracyclines. Your doctor needs to monitor your heart function during and after treatment.
Regular check-ups can help detect any issues early, especially those related to heart and lung function.
Warnings and Precautions
Herceptin comes with certain warnings and precautions. Understanding the risks associated with Herceptin is important to ensure your safety during treatment.
Before using Herceptin, you must inform your doctor if you have any existing health conditions, are pregnant, or are breastfeeding.
Some side effects can occur during treatment, and your doctor will monitor your heart and lungs closely, especially if you have pre-existing heart conditions or if you are taking other cancer medications.
- Do not use Herceptin if you are pregnant, as it can harm the unborn baby. Use effective birth control during treatment and for at least 7 months after the last dose.
- You should not take this medication if you experience an allergic reaction to Herceptin or any of its ingredients.
- Inform your doctor if you have heart disease, including heart failure, previous heart attacks, or any other heart conditions. Herceptin can cause heart failure, especially if combined with certain chemotherapy drugs.
- Tell your doctor if you have breathing problems or lung conditions, as Herceptin may cause lung issues.
- Herceptin may not be safe for you if you have had chemotherapy with anthracyclines, as it increases the risk of heart problems.
- Your doctor will monitor your heart function before, during, and after Herceptin treatment.
- Avoid breastfeeding while using Herceptin and for at least 7 months after the last dose, as it is unknown whether Herceptin passes into breast milk.
- Herceptin may not be suitable for children under 18, as its safety and effectiveness in this age group have not been established.
- If you become pregnant during treatment, inform your doctor immediately, as your name may be added to a pregnancy registry to monitor the effects on the baby.
Drug Interactions
Herceptin interactions can occur with other medications, including prescription drugs, over-the-counter medications, vitamins, and herbal products.
Inform your doctor about all the medications you are taking. Some medications can affect how Herceptin works, especially regarding heart function, and may increase the risk of side effects.
- Herceptin interactions with gemcitabine, vinorelbine, taxanes, or radiation therapy can increase the risk of lung problems like interstitial lung disease.
- If you start any new medication within seven months of finishing Herceptin treatment, inform your doctor or pharmacist. It may take up to seven months for Herceptin to leave your body.
- Be cautious when combining Herceptin with other cancer medications, as they may have lasting effects on your heart.
Herceptin Alternatives
If you are looking for Herceptin alternatives, your doctor may recommend other medications, depending on your condition.
These Herceptin alternatives are also used to treat various types of cancer.
Discuss these options with your healthcare provider to determine which medication is best for you.
- Verzenio (abemaciclib)
- Trodelvy (sacituzumab govitecan)
There are several biosimilars available that offer similar benefits at a more affordable price.
- Ogivri (trastuzumab-dkst)
- Herzuma (trastuzumab-pkrb)
- Ontruzant (trastuzumab-dttb)
- Trazimera (trastuzumab-bvzr)
- Kanjinti (trastuzumab-anns)
Order Herceptin at a Lower Cost from Canada
If you need Herceptin and want a more affordable option, ordering from Canada could be an excellent solution. The high cost of medications in the U.S. can be a major burden, especially for life-saving treatments like Herceptin.
Ordering Herceptin from Pharma Giant is easy and convenient. You can order online, and the process is simple.
With secure and reliable delivery services, your medication will be shipped directly to your home in just a few business days, saving you time and effort.
You can rest assured that your Herceptin will be carefully packaged and shipped, especially if it is temperature-sensitive. With express shipping options available, you can expect quick delivery so that you can stay on track with your treatment without delay.
For those concerned about the high prices of medications, ordering Herceptin from Pharma Giant in Canada provides a way to access the medication you need at a more affordable cost while ensuring quality, safety, and convenience.
How to Order Herceptin Online?
- To order Herceptin, search for it on our website, select the desired form, and add it to your cart.
- Proceed to checkout, enter your details, and use code PGSAVE10 for a 10% discount.
- Upload or email your prescription to info@pharmagiant.com or fax it to 1-888-562-8159. If no prescription is needed, your order will be processed immediately.
Frequently Asked Questions
Disclaimer
Pharma Giant provides medical information to help you better understand medications and medical conditions.This content is for informational use only and does not replace advice from a licensed medical practitioner. Consult your doctor or pharmacist before starting or changing any medication. All our partners follow strict safety standards set by their country’s health authorities to make sure you receive safe and high-quality medications.
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