WARNING

Trastuzumab and Hyaluronidase-oysk Injection is a medication used in the treatment of certain types of breast cancer and stomach cancer that is HER2-positive. While it can be effective in treating cancer, like any medication, it carries some risks. Here are some potential risks associated with Trastuzumab and Hyaluronidase-oysk Injection:

• Cardiotoxicity: Trastuzumab can weaken the heart muscle, leading to heart failure or other heart-related issues. Patients may experience symptoms such as shortness of breath, fatigue, or swelling in the ankles or legs.
• Infusion reactions: Some patients may experience allergic reactions or infusion-related reactions during or after receiving the medication. Symptoms can include fever, chills, nausea, vomiting, rash, or difficulty breathing.
• Infection risk: Trastuzumab can suppress the immune system, increasing the risk of infections. Patients should be monitored closely for signs of infection during treatment.
• Pulmonary toxicity: Rarely, Trastuzumab can cause lung problems such as interstitial pneumonitis or pulmonary fibrosis, which can lead to difficulty breathing and cough.
• Hypersensitivity reactions: Some patients may develop severe allergic reactions to Trastuzumab, which can manifest as hives, swelling, or anaphylaxis.
• Risk to the fetus: Trastuzumab may harm an unborn baby if administered during pregnancy. It is important for pregnant women or those planning to become pregnant to discuss the risks and benefits with their healthcare provider.
• Hyaluronidase-related risks: Hyaluronidase, an enzyme used in combination with Trastuzumab to enhance drug delivery, can cause local reactions at the injection site, such as redness, swelling, or pain.

It’s essential for patients to discuss these potential risks with their healthcare provider before starting treatment and to undergo close monitoring during therapy to manage and mitigate any adverse effects.

Why is this medication prescribed?

Trastuzumab and Hyaluronidase-oysk Injection is prescribed for the treatment of certain types of breast cancer and stomach cancer that are HER2-positive. HER2-positive cancers have a higher than normal level of a protein called human epidermal growth factor receptor 2 (HER2), which promotes the growth of cancer cells. Trastuzumab works by targeting and blocking the HER2 protein, thereby slowing or stopping the growth of cancer cells.

How should this medicine be used?

The addition of hyaluronidase to trastuzumab allows for subcutaneous administration, meaning the medication is injected under the skin rather than into a vein. This method can offer advantages such as shorter administration times and reduced healthcare resource utilization.

Here’s how Trastuzumab and Hyaluronidase-oysk Injection is typically used:

• Dosage: The dosage of Trastuzumab and Hyaluronidase-oysk Injection may vary depending on factors such as the type and stage of cancer, as well as individual patient characteristics. Your healthcare provider will determine the appropriate dosage for you.
• Administration: Trastuzumab and Hyaluronidase-oysk Injection is administered as an injection under the skin (subcutaneous injection). It is usually given once every 3 weeks.
• Injection site: The injection site is typically the thigh or abdomen. Rotate injection sites for each dose to minimize the risk of injection site reactions.
• Preparation: The medication is provided as a sterile solution in a single-dose vial. It should be visually inspected for particulate matter and discoloration before administration. Do not use the medication if it appears cloudy, discolored, or contains particles.
• Monitoring: Your healthcare provider will monitor your response to treatment and may perform tests to assess your heart function and monitor for any adverse effects.

It’s important to follow your healthcare provider’s instructions carefully regarding the dosage and administration of Trastuzumab and Hyaluronidase-oysk Injection. Do not self-administer the medication unless instructed to do so by your healthcare provider. If you have any questions or concerns about the use of this medication, discuss them with your healthcare provider.

Other uses for this medicine

Some off-label uses of Trastuzumab and Hyaluronidase-oysk Injection may include:

• HER2-positive metastatic colorectal cancer: Trastuzumab, when used in combination with other medications, has shown some efficacy in treating HER2-positive metastatic colorectal cancer.
• HER2-positive gastric cancer: Trastuzumab, in combination with chemotherapy, is also used to treat HER2-positive gastric (stomach) cancer.

What special precautions should I follow?

Regarding special precautions for Trastuzumab and Hyaluronidase-oysk Injection use, here are some key points to consider:

• Heart function monitoring: Trastuzumab can cause cardiotoxicity, leading to heart failure or other heart-related issues. Before starting treatment, your healthcare provider may perform tests to assess your heart function, such as an echocardiogram or a multiple-gated acquisition (MUGA) scan. Regular monitoring of cardiac function during treatment is also recommended.
• Infusion reactions: Patients may experience allergic or infusion-related reactions during or after receiving Trastuzumab and Hyaluronidase-oysk Injection. These reactions can range from mild to severe and may include symptoms such as fever, chills, nausea, rash, or difficulty breathing. Patients should be closely monitored during infusion and for a period afterward.
• Pregnancy and breastfeeding: Trastuzumab may harm an unborn baby if administered during pregnancy. It is important for pregnant women or those planning to become pregnant to discuss the risks and benefits with their healthcare provider. It is not known whether Trastuzumab passes into breast milk, so breastfeeding should be avoided during treatment.
• Pre-existing conditions: Inform your healthcare provider about any pre-existing medical conditions you have, especially heart disease or a history of allergic reactions, as these may affect your suitability for Trastuzumab and Hyaluronidase-oysk Injection treatment.
• Drug interactions: Discuss any medications, supplements, or herbal products you are taking with your healthcare provider, as they may interact with Trastuzumab and Hyaluronidase-oysk Injection.

Always follow your healthcare provider’s instructions and guidance regarding the use of Trastuzumab and Hyaluronidase-oysk Injection, and report any unusual symptoms or side effects promptly.

What special dietary instructions should I follow?

There are no specific dietary restrictions associated with Trastuzumab and Hyaluronidase-oysk Injection. However, maintaining a balanced and healthy diet is always recommended to support overall health and well-being during cancer treatment.

What should I do if I forget a dose?

If you miss a dose of Trastuzumab and Hyaluronidase-oysk Injection, contact your healthcare provider or healthcare team as soon as possible for guidance. They will advise you on the best course of action, which may include rescheduling the missed dose or adjusting your treatment plan accordingly. It’s essential not to administer extra doses to make up for a missed one without consulting your healthcare provider first.

What side effects can this medication cause?

Trastuzumab and Hyaluronidase-oysk Injection, like any medication, can cause side effects. It’s important to note that not all individuals will experience these side effects, and their severity can vary. Some common side effects of Trastuzumab and Hyaluronidase-oysk Injection may include:

• Infusion reactions: These can occur during or after administration and may include symptoms such as fever, chills, nausea, vomiting, headache, rash, itching, or difficulty breathing.
• Fatigue: Feeling tired or weak is a common side effect of cancer treatment, including Trastuzumab and Hyaluronidase-oysk Injection.
• Diarrhea: Some patients may experience diarrhea as a side effect of Trastuzumab and Hyaluronidase-oysk Injection.
• Nausea and vomiting: These gastrointestinal symptoms are common side effects of cancer treatment and may occur with Trastuzumab and Hyaluronidase-oysk Injection.
• Headache: Headaches are among the possible side effects of this medication.
• Muscle or joint pain: Some patients may experience muscle or joint pain during treatment with Trastuzumab and Hyaluronidase-oysk Injection.
• Infections: Trastuzumab can suppress the immune system, increasing the risk of infections. Patients should be monitored closely for signs of infection during treatment.
• Cardiotoxicity: Trastuzumab can weaken the heart muscle, leading to heart failure or other heart-related issues. Symptoms may include shortness of breath, fatigue, or swelling in the ankles or legs.
• Pulmonary toxicity: Rarely, Trastuzumab can cause lung problems such as interstitial pneumonitis or pulmonary fibrosis, leading to difficulty breathing and cough.
• Allergic reactions: Some patients may develop severe allergic reactions to Trastuzumab and Hyaluronidase-oysk Injection, which can manifest as hives, swelling, or anaphylaxis.

It’s essential for patients to discuss any concerns about side effects with their healthcare provider. Additionally, healthcare providers will monitor patients closely during treatment to manage and mitigate any adverse effects that may arise.

What should I know about storage and disposal of this medication?

Storage and Disposal:

• Storage: Trastuzumab and Hyaluronidase-oysk Injection should be stored in the refrigerator at a temperature between 2°C to 8°C (36°F to 46°F). Do not freeze. Keep the medication in its original carton to protect it from light.
• Handling: When preparing and administering Trastuzumab and Hyaluronidase-oysk Injection, follow proper aseptic techniques to prevent contamination.
• Disposal: Dispose of any unused medication and materials used for injection according to local regulations. Do not dispose of Trastuzumab and Hyaluronidase-oysk Injection in household trash. Your healthcare provider or pharmacist can provide guidance on proper disposal methods.

In case of emergency/overdose

• In case of an emergency: If you experience severe allergic reactions (such as difficulty breathing, swelling of the face or throat, or hives) or any other serious adverse reactions, seek immediate medical attention.
• Overdose: There is limited information on the effects of an overdose of Trastuzumab and Hyaluronidase-oysk Injection. If you suspect an overdose or have concerns, contact your healthcare provider, poison control center, or seek emergency medical assistance.

What other information should I know?

• Patient Education: It’s essential to understand the purpose of Trastuzumab and Hyaluronidase-oysk Injection, how to administer it, potential side effects, and when to seek medical help.
• Regular Monitoring: Your healthcare provider will monitor your response to treatment, including cardiac function and any potential side effects. Attend all scheduled appointments and follow-up visits.
• Drug Interactions: Inform your healthcare provider about all medications, supplements, or herbal products you’re taking, as they may interact with Trastuzumab and Hyaluronidase-oysk Injection.
• Pregnancy and Breastfeeding: Discuss family planning with your healthcare provider before starting treatment. Trastuzumab may harm an unborn baby, and breastfeeding should be avoided during treatment.
• Patient Support: Cancer treatment can be challenging both physically and emotionally. Seek support from healthcare professionals, support groups, or counselors if needed.
• Follow Instructions: Always follow your healthcare provider’s instructions regarding the dosage, administration, and any other recommendations for Trastuzumab and Hyaluronidase-oysk Injection.

By understanding and following these guidelines, you can ensure the safe and effective use of Trastuzumab and Hyaluronidase-oysk Injection in your treatment regimen.