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Lanadelumab-flyo (Subcutaneous)

Generic name: lanadelumab-flyo

Brand names: Takhzyro

Last updated November 8, 2025 0 views
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Uses for lanadelumab-flyo

Lanadelumab-flyo injection is used to prevent hereditary angioedema (HAE) attacks. HAE is a rare disease that causes swelling of the face, hands, feet, throat, stomach, bowels, or genitals.

This medicine is available only with your doctor's prescription.

This section was rewritten for readability and reviewed for meaning.

Precautions while using lanadelumab-flyo

It is very important for your doctor to check your or your child's progress during regular visits to ensure that the medicine is working well and to monitor for any unwanted effects.

Make sure to use this medicine regularly. HAE attacks are life-threatening and need immediate medical attention. Carefully follow all of your doctor's instructions.

This medicine may cause serious allergic reactions, which can be life-threatening and need immediate medical attention. Call your doctor or nurse right away if you or your child have a rash, itching, hives, hoarseness, chest tightness, lightheadedness, dizziness or fainting, trouble breathing, trouble swallowing, or any swelling of your hands, face, or mouth after using this medicine.

Make sure any doctor or dentist who treats you knows that you are using this medicine. This medicine may affect the results of certain medical tests.

This section was rewritten for readability and reviewed for meaning.

Before using lanadelumab-flyo

In deciding to use a medicine, you and your doctor must consider the risks of taking the medicine against its benefits. For this medicine, the following points should be considered:

Allergies

Inform your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also, let your healthcare professional know if you have other allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients closely.

Pediatric

Appropriate studies have not been done on how lanadelumab-flyo injection affects children younger than 2 years. Safety and effectiveness have not been proven.

Geriatric

Studies done so far have not found any specific problems in older adults that would limit the use of lanadelumab-flyo injection.

Breast Feeding

There are no adequate studies in women to determine the risk to infants when using this medication while breastfeeding. Weigh the potential benefits against the potential risks before taking this medication during breastfeeding.

Interactions with Medicines

Some medicines should not be used together at all, while in other cases, two different medicines may be used together even if an interaction could happen. In these situations, your doctor may adjust the dose or take other precautions. Tell your healthcare professional if you are taking any other prescription or nonprescription (over-the-counter [OTC]) medicine.

Interactions with Food/Tobacco/Alcohol

Some medicines should not be used while eating or around certain foods due to possible interactions. Using alcohol or tobacco with certain medicines may also lead to interactions. Talk to your healthcare professional about using your medicine with food, alcohol, or tobacco.

This section was rewritten for readability and reviewed for meaning.

Side Effects of lanadelumab-flyo

Along with its needed effects, a medicine may cause some unwanted effects. Not all of these side effects may happen, but if they do, they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

More common

  • Rash

Less common

  • Chest tightness
  • fast heartbeat
  • fever
  • hives, itching
  • hoarseness
  • irritation
  • joint pain, stiffness, or swelling
  • redness of the skin
  • swelling of the eyelids, face, lips, hands, or feet
  • trouble breathing or swallowing

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue, are bothersome, or if you have any questions about them:

More common

  • Bleeding, blistering, burning, coldness, discoloration of skin, feeling of pressure, hives, infection, inflammation, itching, lumps, numbness, pain, rash, redness, scarring, soreness, stinging, swelling, tenderness, tingling, ulceration, or warmth at the injection site
  • body aches or pain
  • chills
  • cough
  • difficulty in moving
  • dizziness
  • ear congestion
  • headache
  • loss of voice
  • muscle ache, cramps, pain, or stiffness
  • sneezing
  • stuffy or runny nose
  • sore throat
  • unusual tiredness or weakness

Less common

  • Diarrhea

Other side effects not listed may also happen in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

In the U.S.

  • Takhzyro

Available Dosage Forms:

  • Solution

Therapeutic Class: Immune Modulator

Pharmacologic Class: Lanadelumab

Find detailed information on biosimilars for this medication.

This section was rewritten for readability and reviewed for meaning.

Proper use of lanadelumab-flyo

This medicine is given as a shot under your skin in the stomach, thigh, or upper arm. It may sometimes be given at home to patients who do not need to be in the hospital or clinic. If you are using this medicine at home, your doctor or nurse will teach you how to prepare and inject the medicine. Be sure that you understand how to use this medicine.

If you use this medicine at home, you will be shown the body areas where this shot can be given. Use a different body area each time you give yourself or your child a shot. Keep track of where you give each shot to make sure you rotate body areas. This will help prevent skin problems. Do not inject into skin areas that are bruised, infected, irritated, red, tender, swollen, or painful.

This medicine comes with a patient information leaflet and patient instructions. Read and follow the instructions carefully. Ask your doctor if you have any questions about:

  • How to prepare the injection.
  • The proper use of disposable syringes.
  • How to give the injection.
  • How long the injection can be stored at home.

Allow the medicine to warm to room temperature for 15 minutes before using it. Do not warm it by using a heat source (eg, hot water or microwave) or in any other way. Do not shake.

Check the liquid in the vial. It should be colorless or slightly yellow. Do not use this medicine if it is cloudy, discolored, or if it has particles in it. Do not use the prefilled syringe if it has been damaged or cracked.

Use a new needle and syringe each time you inject your medicine.

Dosing

The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.

The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.

  • For injection dosage form (solution):For hereditary angioedema: Adults and children 12 years of age and older—At first, 300 milligrams (mg) injected under the skin every 2 weeks. 300 mg every 4 weeks may also be given if the patient is well controlled (attack free) for more than 6 months. Children 6 to less than 12 years of age—At first, 150 mg injected under the skin every 4 weeks. 150 mg every 4 weeks may also be given if the patient is well controlled (attack free) for more than 6 months. Children 2 to less than 6 years of age—150 mg injected under the skin every 4 weeks. Children younger than 2 years of age—Use and dose must be determined by your doctor.

Missed Dose

Call your doctor or pharmacist for instructions.

Storage

Keep out of the reach of children.

Do not keep outdated medicine or medicine no longer needed.

Ask your healthcare professional how you should dispose of any medicine you do not use.

Store in the refrigerator. Do not freeze.

Keep it in its original container. Protect from light. Do not use it if it has been frozen or thawed.

Use this medicine within 2 hours after preparing it at room temperature. You may also refrigerate the prepared dosing syringe and use it within 8 hours.

Throw away used syringes in a hard, closed container that the needles cannot poke through. Keep this container away from children and pets.

Frequently asked questions

  • What is Takhzyro used for and how does it work?
  • How is Takhzyro injected/administered?
  • What type of drug is Takhzyro?

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Before you take this medicine: the information on this page is general and may not cover your personal circumstances. Read the label supplied with your medicine and ask a pharmacist or doctor if you are unsure, especially if you are pregnant, breastfeeding, taking other medicines or managing a long-term condition.
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Content is provided for education and is not medical advice. See our medical disclaimer.