Description

Darzalex 400mg Injection (Daratumumab) – Uses, Dosage, Side Effects & Price in Pakistan

Darzalex 400mg Injection (Daratumumab) is a prescription oncology medicine containing daratumumab, a monoclonal antibody used in specific treatment regimens for adults with multiple myeloma and, depending on the formulation and regimen, certain patients with light-chain (AL) amyloidosis. The intravenous product is available as a 400 mg/20 mL single-dose vial.

Daratumumab works by targeting CD38, a protein expressed on the surface of abnormal plasma cells. By binding to CD38, the medicine can help trigger immune mechanisms that eliminate these cells.

Because this is a specialized cancer medicine, Darzalex should be used only under the supervision of a qualified oncologist. The dose, treatment combination, infusion schedule, and duration depend on the patient’s diagnosis, previous treatment, and prescribed regimen.

Important: Darzalex 400mg Injection is an IV infusion medicine. It should be prepared and administered by trained healthcare professionals and should not be self-administered at home.

What Is Darzalex 400mg Injection?

Darzalex is the brand name for daratumumab, a CD38-directed monoclonal antibody.

The intravenous formulation is supplied as a colorless to pale-yellow solution in a single-dose vial. The 400 mg presentation contains 400 mg of daratumumab in 20 mL, with a concentration of 20 mg/mL.

Unlike conventional chemotherapy medicines that may affect rapidly dividing cells through broader mechanisms, daratumumab is a targeted biological therapy designed to recognize CD38.

The medicine may be prescribed alone in selected circumstances or as part of a combination treatment plan with other medicines used for multiple myeloma.

Darzalex 400mg Injection Uses

The main Darzalex 400mg Injection Uses are associated with the treatment of multiple myeloma, a cancer of plasma cells.

Daratumumab may be included in different treatment combinations depending on whether a patient has newly diagnosed disease, relapsed disease, or disease that has not responded adequately to previous treatment. The approved combination and dosing schedule depend on the patient’s specific clinical situation.

Depending on the applicable indication and regimen, daratumumab may be used with medicines such as:

• Lenalidomide
• Bortezomib
• Pomalidomide
• Carfilzomib
• Dexamethasone
• Other medicines selected by the treating specialist

Multiple Myeloma

Multiple myeloma develops when abnormal plasma cells accumulate in the bone marrow and produce abnormal proteins. Daratumumab targets CD38 on these cells and can contribute to their elimination through immune-mediated mechanisms.

The specific treatment plan is determined by the patient’s oncologist.

AL Amyloidosis

Daratumumab is also used in certain treatment regimens for light-chain (AL) amyloidosis. This condition occurs when abnormal light-chain proteins accumulate in tissues and organs.

Not every Darzalex formulation or regimen is interchangeable, so patients should follow the exact product and treatment plan prescribed by their healthcare professional.

How Does Daratumumab Work?

Daratumumab is a monoclonal antibody that targets CD38.

CD38 is highly expressed on myeloma cells. When daratumumab attaches to CD38, it can activate several mechanisms involved in the destruction of abnormal cells.

These mechanisms can include immune-mediated cell killing and other processes that help reduce malignant plasma cells.

This targeted mechanism is one reason daratumumab has become an important component of treatment regimens for multiple myeloma.

However, the medicine can also interact with certain normal cells and can affect some laboratory tests, which is why appropriate medical monitoring is required throughout treatment.

Daratumumab 400mg Injection Dosage

The Daratumumab 400mg Injection vial strength should not be confused with the patient’s complete treatment dose.

For intravenous Darzalex, dosing is generally based on the patient’s actual body weight, with the recommended dose commonly being 16 mg/kg for applicable regimens. The number of vials required therefore depends on the calculated dose for the individual patient.

The administration schedule can also change during treatment. Some regimens use more frequent infusions during the initial phase and gradually extend the interval between doses.

Important

Patients should not calculate their own dose based on the vial strength.

A 400 mg vial does not necessarily mean that 400 mg is the patient’s prescribed dose. The oncology team calculates the required amount according to the approved treatment regimen.

How Is Darzalex 400mg Given?

Darzalex 400mg is administered through an intravenous infusion.

The medicine is diluted before administration and infused by trained healthcare professionals. Patients are monitored during the infusion because reactions can occur during or after administration.

Before receiving treatment, patients may receive medicines intended to reduce the likelihood or severity of infusion-related reactions.

The healthcare team may monitor:

• Blood pressure
• Heart rate
• Breathing
• Oxygen levels
• Temperature
• Symptoms during the infusion

If a reaction occurs, the medical team can slow or interrupt the infusion and provide appropriate treatment.

Darzalex 400mg Infusion-Related Reactions

Infusion-related reactions are an important safety consideration with intravenous daratumumab.

Possible symptoms include:

• Cough
• Nasal congestion
• Chills
• Fever
• Wheezing
• Shortness of breath
• Chest discomfort
• Nausea
• Changes in blood pressure

Patients should immediately tell the healthcare professional if they notice unusual symptoms during the infusion.

Premedication and appropriate monitoring are used to reduce and manage this risk. The official prescribing information provides specific recommendations for pre- and post-infusion medication.

Darzalex 400mg Side Effects

Like other cancer medicines, Darzalex can cause side effects, although not every patient experiences them.

Possible adverse effects include:

• Fatigue
• Nausea
• Cough
• Shortness of breath
• Fever
• Diarrhea
• Constipation
• Upper respiratory infections
• Reduced blood-cell counts
• Infusion-related reactions

Daratumumab treatment can also be associated with neutropenia, anemia, and thrombocytopenia, making blood-count monitoring an important part of treatment.

The severity and frequency of side effects can differ depending on the treatment combination and the patient’s overall health.

Darzalex and Blood Cell Monitoring

During treatment, doctors may regularly check the patient’s blood counts.

Monitoring can help identify:

• Low white blood-cell counts
• Low neutrophil counts
• Anemia
• Low platelet counts

If blood counts become significantly reduced, the healthcare team may adjust the treatment schedule or provide additional medical management.

Patients should contact their healthcare provider if they develop symptoms such as persistent fever, unusual bruising, bleeding, or other signs of infection.

Important Information Before Starting Darzalex

Before receiving Darzalex 400mg Injection (Daratumumab), tell your healthcare professional about:

• Previous allergic reactions.
• Current or previous hepatitis B infection.
• Other medicines you are taking.
• Pregnancy or plans for pregnancy.
• Breastfeeding.
• Previous blood transfusions.
• Other significant medical conditions.

Daratumumab can interfere with certain blood compatibility tests, so healthcare professionals and blood banks should know that a patient is receiving or has received the medicine.

Product Authenticity

When purchasing Darzalex 400mg Injection (Daratumumab), customers should check the product packaging, batch number, expiry date, manufacturer details, and source of supply. Because Darzalex is a specialized oncology medicine, it is important to obtain it through a reliable and properly licensed medicine supplier. Customers should also avoid products with damaged packaging or questionable labeling and consult a healthcare professional if they have concerns about a product’s authenticity.

Darzalex 400mg Injection Dosage and Treatment Schedule

The dosage of Darzalex 400mg Injection (Daratumumab) is determined by the patient’s treatment regimen and actual body weight. For applicable intravenous regimens, the recommended dose is generally 16 mg/kg, so the 400 mg vial strength does not necessarily represent the complete dose a patient will receive.

The treatment schedule can change during therapy. Depending on the prescribed regimen, infusions may initially be given more frequently and later at longer intervals.

The exact dose and schedule should always be decided by the treating oncologist. Patients should not calculate or change their Darzalex dose themselves.

How Is Darzalex 400mg Injection Administered?

Darzalex 400mg Injection (Daratumumab) is an intravenous medicine. The solution is prepared and diluted by healthcare professionals before being administered through an IV infusion.

The patient is monitored during treatment because infusion-related reactions can occur. Healthcare professionals may check breathing, blood pressure, heart rate, oxygen levels, and other symptoms during the infusion.

The first infusion may take longer than subsequent infusions because the administration rate is adjusted according to the patient’s tolerance.

Medicines Given Before Darzalex Infusion

Doctors commonly use pre-infusion medicines to reduce the risk and severity of infusion-related reactions.

Depending on the treatment regimen, these may include:

• A corticosteroid
• An antihistamine
• Acetaminophen or another appropriate antipyretic

Additional medicines may be prescribed according to the patient’s medical history and treatment plan.

Patients should not take additional premedication without discussing it with their healthcare professional.

Darzalex 400mg Injection Side Effects

Like other prescription cancer medicines, Darzalex 400mg Injection can cause side effects. The type and severity can vary between patients and may also depend on other medicines used in the treatment combination.

Commonly reported reactions can include:

• Fatigue
• Nausea
• Cough
• Fever
• Upper respiratory infections
• Shortness of breath
• Diarrhea or constipation
• Reduced blood-cell counts
• Infusion-related reactions

Daratumumab treatment can also cause neutropenia, anemia, and thrombocytopenia, which is why regular blood-count monitoring may be required.

Not every patient will experience these effects, and the presence of a side effect does not necessarily mean treatment must be stopped.

Infusion-Related Reactions

Infusion-related reactions are one of the important precautions associated with intravenous daratumumab.

Symptoms may include:

• Nasal congestion
• Cough
• Chills
• Fever
• Wheezing
• Shortness of breath
• Nausea
• Chest discomfort
• Changes in blood pressure

These reactions can occur during the infusion or within the period following administration.

If symptoms develop, the healthcare professional may slow or temporarily stop the infusion and provide appropriate treatment. This is one reason Daratumumab 400mg Injection should only be administered in an appropriate healthcare setting.

Darzalex and Blood Tests

Daratumumab can affect certain laboratory tests used for blood compatibility.

It may interfere with antibody screening and crossmatching, which can make it more difficult for a blood bank to identify compatible blood using standard procedures.

Patients receiving Darzalex 400mg Injection (Daratumumab) should inform their doctor and blood bank that they are receiving or have previously received daratumumab before a blood transfusion.

This information is important even if the patient has completed treatment.

Darzalex 400mg and Hepatitis B

Hepatitis B virus reactivation is an important safety consideration with daratumumab treatment.

Patients should tell their healthcare provider if they have:

• Current hepatitis B infection
• A previous hepatitis B infection
• Known hepatitis B exposure
• Any relevant liver condition

Healthcare professionals may perform appropriate testing before treatment and monitor patients when necessary.

Contact your healthcare provider if you develop symptoms such as unusual tiredness, dark urine, yellowing of the eyes or skin, or other signs that may indicate a liver problem.

Darzalex 400mg Drug Interactions

Before starting treatment, tell your oncologist about all medicines and supplements you currently use.

This includes:

• Prescription medicines
• Over-the-counter medicines
• Vitamins
• Herbal supplements
• Other cancer medicines
• Medicines for infections or chronic conditions

There may not always be a direct drug interaction, but your healthcare team needs a complete medication history to manage your treatment safely.

Do not start, stop, or change another medicine without discussing it with your doctor.

Darzalex 400mg During Pregnancy

Pregnancy should be discussed with the treating healthcare professional before starting Darzalex 400mg Injection (Daratumumab).

Daratumumab may cause fetal harm based on its mechanism and available nonclinical information. The prescribing information recommends appropriate contraception for women who can become pregnant during treatment and for 3 months after the final dose.

If pregnancy occurs or is suspected during treatment, contact the treating healthcare professional promptly.

When daratumumab is prescribed with other medicines, those medicines may have their own pregnancy precautions that must also be followed.

Darzalex and Breastfeeding

It is not known whether daratumumab passes into human milk.

Because of the potential for serious adverse reactions in a breastfed child, women should discuss breastfeeding with their healthcare professional before and during treatment. The official prescribing information advises against breastfeeding during treatment.

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Darzalex 400mg Storage

Proper storage is particularly important for a biological medicine.

The intravenous Darzalex product should generally be kept refrigerated at 2°C to 8°C (36°F to 46°F) and protected from light. It should not be frozen or shaken.

If you are buying an imported product in Pakistan, pay attention to the condition of the packaging and the required cold-chain handling.

Do not use a vial if:

• The packaging is damaged.
• The vial appears abnormal.
• The product has been frozen.
• The expiry date has passed.
• The product’s authenticity is uncertain.

Storage and handling should follow the instructions supplied with the actual product.

Daratumumab 400mg Injection Manufacturer

Darzalex is a daratumumab product developed and marketed by Janssen. The official prescribing information identifies Janssen Biotech, Inc. in the U.S. product information.

The intravenous 400 mg presentation is supplied as a 400 mg/20 mL single-dose vial.

When purchasing an imported medicine, customers should check the physical packaging for:

• Manufacturer
• Product strength
• Batch number
• Expiry date
• Country/market information
• Packaging details

The exact regulatory and manufacturer information can vary according to the country in which a particular presentation is marketed.

Darzalex 400mg Price in Pakistan

The Darzalex 400mg Price in Pakistan can vary because this is an imported specialty oncology medicine.

Factors that can influence the price include:

• Import costs
• Exchange-rate changes
• Supplier availability
• Product origin
• Current stock
• Distribution costs

For the latest price, customers should confirm the current availability and quotation before placing an order.

Price should not be the only factor when purchasing a high-value oncology medicine. Product authenticity, storage conditions, expiry, and reliable supply are equally important.

Darzalex 400mg Injection Online Pakistan

People searching for Darzalex 400mg Injection Online Pakistan should verify the seller and product details before making a purchase.

Before ordering, confirm:

1. The exact medicine and strength.
2. The active ingredient.
3. Manufacturer details.
4. Batch number and expiry.
5. Packaging condition.
6. Storage requirements.
7. Prescription requirements.
8. Current availability and price.

For an imported oncology medicine, avoid purchasing from an unknown source simply because the advertised price is unusually low.

Darzalex Product Authenticity

Authenticity is especially important when purchasing Daratumumab 400mg Injection.

In July 2026, WHO issued a medical product alert concerning falsified Darzalex products detected in the WHO Regions of the Americas and South-East Asia. WHO reported two falsified batches, MYS7381 and STV1K01, and stated that Janssen had confirmed these batch numbers were not valid genuine Darzalex batches. Visible particulate matter was also reported in at least one falsified batch.

This does not mean that every Darzalex product available in Pakistan is affected. It means buyers should take reasonable precautions when purchasing this specialized medicine.

Always check the product packaging, batch information, expiry date, manufacturer details, and supply source.

If a product appears suspicious or matches a batch specifically identified by a regulatory authority as falsified, do not use it and seek professional guidance.

Why Product Verification Matters

A falsified medicine may contain the wrong ingredients, incorrect amounts of active substance, or potentially harmful contaminants. WHO notes that patients receiving falsified Darzalex may not receive appropriate treatment and could face serious health consequences.

For this reason, Darzalex 400mg Injection Online Pakistan should be purchased through a reliable and properly regulated supply channel rather than an unknown seller.

This is particularly important for oncology medicines where treatment decisions depend on receiving the correct medicine and dose.

Before Ordering Darzalex From ImpoMedic

If you are looking to buy Darzalex 400mg Injection in Pakistan, contact ImpoMedic to confirm the latest product information before placing an order.

You can ask about:

• Current price
• Product availability
• Manufacturer
• Pack size
• Expiry information
• Ordering process
• Delivery arrangements

Customers should keep their prescription available because Darzalex is a prescription oncology medicine and its administration requires qualified healthcare professionals.

Why Choose ImpoMedic for Darzalex 400mg?

Choosing a reliable source is important when purchasing a specialized oncology medicine such as Darzalex 400mg Injection (Daratumumab). ImpoMedic provides product information to help customers check availability, pricing, manufacturer details, and ordering requirements before purchasing.

Customers can contact ImpoMedic to confirm the current product details and availability in Pakistan.

What Customers Can Check

• Current Darzalex 400mg Price in Pakistan
• Product availability
• Manufacturer and product details
• Pack size and strength
• Expiry information
• Ordering requirements
• Delivery information

For prescription oncology medicines, customers should have a valid prescription and arrange administration through a qualified healthcare professional.

Important Advice Before Buying Darzalex

If you are searching for Darzalex 400mg Injection Online Pakistan, do not choose a seller based only on price.

Before purchasing, check the:

• Product name and strength
• Active ingredient
• Manufacturer
• Batch number
• Expiry date
• Packaging
• Storage requirements
• Source of supply

A very low price from an unknown source should be treated with caution, particularly for an imported biologic medicine.

Darzalex 400mg Injection Availability in Pakistan

Availability of imported oncology medicines can change according to supplier stock, import conditions, exchange rates, and distribution.

For current availability of Darzalex 400mg Injection (Daratumumab), customers can contact ImpoMedic and confirm the product before placing an order.

Because Darzalex requires specific storage and professional administration, buyers should also consider product handling and authenticity rather than price alone.

Summary

Darzalex 400mg Injection (Daratumumab) is a specialized prescription medicine used in specific oncology treatment regimens. It should be used only under the supervision of an appropriate healthcare professional.

If you are checking the Darzalex 400mg Price in Pakistan or looking for Darzalex 400mg Injection Online Pakistan, verify the product details, manufacturer, batch information, expiry, and supply source before ordering.

For current product information and availability, contact ImpoMedic.

Medical disclaimer: This information is for educational and product-information purposes only. It does not replace advice from an oncologist, pharmacist, or other qualified healthcare professional. Do not start, stop, or change cancer treatment without professional medical advice.

Frequently Asked Questions (FAQs)

1. What is Darzalex 400mg Injection (Daratumumab) used for?

Darzalex 400mg Injection (Daratumumab) is a prescription oncology medicine used in specific treatment regimens for multiple myeloma and, in applicable regimens, light-chain (AL) amyloidosis. The exact treatment combination is determined by the patient’s healthcare professional.

2. How does Darzalex 400mg work?

Darzalex contains daratumumab, a monoclonal antibody that targets CD38, a protein found on multiple myeloma cells. This helps the immune system recognize and destroy abnormal cells.

3. What are the Darzalex 400mg Injection Uses?

The main Darzalex 400mg Injection Uses are associated with specific treatment regimens for multiple myeloma. Daratumumab may also be used for certain patients with AL amyloidosis according to the applicable treatment regimen.

4. What is the usual dose of Daratumumab 400mg Injection?

The prescribed dose depends on the patient’s body weight and treatment regimen. For applicable intravenous regimens, daratumumab is commonly dosed at 16 mg/kg. The 400 mg vial is a product strength and does not necessarily represent the patient’s complete treatment dose.

5. How is Darzalex 400mg Injection administered?

Darzalex 400mg is administered as an intravenous infusion by qualified healthcare professionals. It should not be injected or administered by the patient at home.

6. What are the common side effects of Darzalex?

Possible side effects include fatigue, nausea, cough, fever, respiratory infections, shortness of breath, diarrhea, constipation, reduced blood-cell counts, and infusion-related reactions. The actual risk can vary depending on the treatment regimen.

7. Can Darzalex cause an infusion reaction?

Yes. Infusion-related reactions can occur with intravenous daratumumab. Symptoms may include cough, chills, fever, nasal congestion, wheezing, shortness of breath, nausea, or changes in blood pressure. Patients are monitored during treatment.

8. What is the Darzalex 400mg Price in Pakistan?

The Darzalex 400mg Price in Pakistan can vary according to availability, import costs, supplier stock, exchange rates, and distribution. Contact ImpoMedic for the latest price and availability.

9. Can I buy Darzalex 400mg Injection Online Pakistan?

If you have a valid prescription, you can contact ImpoMedic to check Darzalex 400mg Injection Online Pakistan availability, current pricing, and ordering information. Always verify the product, manufacturer, batch, expiry, and storage conditions before purchase.

10. Who manufactures Darzalex 400mg Injection?

Darzalex is a daratumumab product developed and marketed by Janssen. U.S. prescribing information identifies Janssen Biotech, Inc. in the product information. Manufacturer details should also be checked on the actual packaging supplied with the medicine.

11. How should Darzalex 400mg be stored?

The intravenous product should generally be stored at 2°C to 8°C (36°F to 46°F) and protected from light. It should not be frozen or shaken. Proper storage and cold-chain handling are important for this biological medicine.

12. What should I check before buying Darzalex?

Before purchasing Darzalex 400mg Injection (Daratumumab), check the product strength, manufacturer, batch number, expiry date, packaging, storage requirements, and source of supply. Because falsified Darzalex products have been reported, buyers should obtain the medicine through a reliable and properly regulated supply channel.