Installment Available Enhertu 100mg Powder For Injection
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Prescription Required
Currently Out of Stock No Longer Available
Prescription required. Once back in stock, a doctor will review your prescription after payment.
Overview
Enhertu 100mg Powder For Injection contains Trastuzumab deruxtecan 100mg (powder for reconstitution) and is available as an injection. It is classified as a prescription medicine and may only be obtained with a valid prescription from a registered medical practitioner.
Only product, safety and handling information is published here. Anything beyond that is explained to you directly by your doctor or pharmacist as part of your consultation.
DoctorOnCall is a licensed online pharmacy. Orders for Enhertu 100mg Powder For Injection are processed only after a doctor has assessed your suitability and issued a prescription, and every order is checked by a registered pharmacist before it is sent out.
Directions for Use
This medicine is prepared and administered only by trained healthcare professionals as an IV infusion, with close monitoring during and after the infusion, particularly for the first dose.
Dosage
Dosing is calculated by the treating oncologist based on body weight and the specific cancer being treated, then given as a timed intravenous infusion every three weeks in a hospital or specialist infusion setting.
Shelf Life
Refer to the expiry date printed on the packaging; this medicine is stored and handled only by healthcare facilities.
Storage Instructions
Stored under controlled, refrigerated conditions by the pharmacy or hospital as specified by the manufacturer; not intended for home storage.
Side Effects
- Nausea, vomiting, and fatigue
- Hair loss (alopecia)
- Low blood cell counts, including neutropenia and anaemia
- Interstitial lung disease or pneumonitis (a boxed-warning risk – report new cough, breathlessness, or fever immediately)
- Reduced heart pumping function (decreased left ventricular ejection fraction) – monitored with periodic heart scans
Contraindications
- Known hypersensitivity to trastuzumab deruxtecan or any ingredient in the formulation
- Pregnancy, due to potential serious harm to the developing baby
- Pre-existing interstitial lung disease requiring oxygen therapy, unless specifically assessed by the oncology team
Drug / Food Interactions
- Other medicines affecting heart or lung function require careful review by the oncology team alongside this medicine.
- Live vaccines are generally avoided during treatment.
- Inform your oncology team of all medicines and supplements you are taking before each cycle.
Quick Tips
- Contact your care team immediately if you develop new or worsening cough, breathlessness, or fever, as this can signal a rare but serious lung side effect.
- Attend all scheduled heart function scans (echocardiograms) during treatment.
- Report any signs of infection promptly, as low blood counts can increase infection risk.
- Discuss fertility and contraception with your oncology team before starting treatment.
Frequently Asked Questions
Is Enhertu 100mg Powder For Injection a prescription medicine?
Yes. Enhertu 100mg Powder For Injection is a prescription-only medicine (POM). It can only be supplied against a valid prescription written by a registered doctor, and it should be used only by the person named on the prescription label.
What does Enhertu 100mg Powder For Injection contain?
Enhertu 100mg Powder For Injection is supplied as an injection and contains Trastuzumab deruxtecan 100mg (powder for reconstitution). The full composition is listed in the Composition section on this page and on the product packaging.
Why is there no information here about what Enhertu 100mg Powder For Injection is for?
Malaysian rules for prescription medicines limit public product pages to product, safety and handling information. Your doctor decides whether this medicine is appropriate for you and will explain it during your consultation, and your pharmacist can answer further questions when the medicine is dispensed.
How should I take Enhertu 100mg Powder For Injection?
Take it exactly as written on your prescription label. Do not increase, reduce or skip doses on your own, and do not continue beyond the period your doctor has prescribed. Practical handling steps are set out in the Directions for Use section on this page.
What should I do if I miss a dose?
Take it as soon as you remember, unless your next dose is nearly due. In that case skip the missed dose and carry on with your usual schedule. Never take two doses together to make up for a missed one. If you miss doses often, tell your doctor or pharmacist.
How should I store Enhertu 100mg Powder For Injection?
Stored under controlled, refrigerated conditions by the pharmacy or hospital as specified by the manufacturer; not intended for home storage. Keep it in the original pack until use, and do not use it after the expiry date printed on the packaging.
What should I do if I notice side effects?
Tell your doctor or pharmacist about any reaction that concerns you, and seek medical care immediately for signs of a severe reaction such as difficulty breathing, swelling of the face, lips or throat, or a widespread rash. Reported reactions are listed in the Side Effects section on this page.
Can I stop taking Enhertu 100mg Powder For Injection on my own?
No. Speak to your doctor before stopping, pausing or changing the dose, even if you feel well or think you no longer need the medicine.
How do I get a prescription for Enhertu 100mg Powder For Injection?
Customers in Malaysia can complete an online consultation with a DoctorOnCall doctor, who decides whether a prescription is appropriate, or upload a valid prescription already issued by their own doctor.
Orders going to Singapore are dispatched from Malaysia as an international delivery, so you need to hold a valid prescription or doctor’s letter for the medicine. Check the consultation and prescription upload options shown at checkout for your delivery address before placing the order.
How long will delivery take?
Within Malaysia, standard delivery takes 3 to 5 working days. Same-day delivery is available in the Klang Valley for orders placed before 12pm; orders placed after 12pm arrive by the end of the next day.
Orders to Singapore are sent as international deliveries and take 5 to 9 working days. A lump-sum shipping and handling fee applies to every overseas delivery and is shown at checkout.
What payment methods can I use?
Customers in Malaysia can pay by FPX online banking, credit or debit card (Visa and Mastercard), and supported e-wallets including Touch ‘n Go eWallet, GrabPay and ShopeePay.
FPX and local e-wallets are tied to Malaysian bank and wallet accounts, so if your delivery address is in Singapore, use the payment options displayed at checkout for that address rather than assuming the same list applies.
Can Enhertu 100mg Powder For Injection be delivered to Singapore?
Yes. DoctorOnCall ships to Singapore as an international order dispatched from Malaysia, arriving in 5 to 9 working days with a lump-sum shipping and handling fee.
Singapore’s Health Sciences Authority (HSA) allows personal imports of up to three months’ supply of a medicine for your own use or an immediate family member’s, as long as it contains no controlled drugs, psychotropic substances or prohibited items. Keep the product in its original labelled packaging and keep a copy of your prescription or doctor’s letter with it. Quantities above three months’ supply, and medicines containing controlled substances, require prior HSA approval.
Is Enhertu 100mg Powder For Injection registered with the authorities?
Products listed on DoctorOnCall are registered with Malaysia’s Ministry of Health for supply in Malaysia, and each pack carries its MAL registration number.
An order delivered to Singapore arrives as a personal import of a Malaysia-registered product; HSA product registration is not required for personal-use quantities, but it is also not the same as a product registered for sale in Singapore. If you need a locally registered Singapore product, buy it from a pharmacy in Singapore.
Who do I contact if there is a problem with my order?
DoctorOnCall’s customer care team handles order, delivery and product queries through the contact channels on the site, including WhatsApp and the online help centre.
For deliveries to Singapore, allow more time before chasing an order than you would for a local Malaysian delivery, as the parcel passes through customs clearance and tracking updates can appear later in the journey.
Ingredients / Active Ingredients
- Trastuzumab deruxtecan 100mg (powder for reconstitution)
