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Synribo

Generic Name: omacetaxine (Subcutaneous route)

oh-ma-se-TAX-een

Commonly used brand name(s)

In the U.S.

  • Synribo

Available Dosage Forms:

  • Powder for Solution

Uses For Synribo

Omacetaxine injection is used to treat chronic or accelerated phase chronic myeloid leukemia (CML). It is used in patients who have already received medicines for CML that did not work well. Leukemia is a type of cancer where the body makes abnormal white blood cells.

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Omacetaxine is an antineoplastic (cancer) medicine. It interferes with the growth of cancer cells, which are eventually destroyed by the body. Since the growth of normal cells may also be affected by omacetaxine, other side effects can occur. Before you begin treatment, talk to your doctor about the benefits of this medicine as well as the possible risks of using it.

This medicine is to be given only by or under the direct supervision of a doctor.

Before Using Synribo

In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:

Allergies

Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.

Pediatric

Appropriate studies have not been performed on the relationship of age to the effects of omacetaxine injection in the pediatric population. Safety and efficacy have not been established.

Geriatric

Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of omacetaxine injection in the elderly.

Pregnancy

Pregnancy Category Explanation
All Trimesters D Studies in pregnant women have demonstrated a risk to the fetus. However, the benefits of therapy in a life threatening situation or a serious disease, may outweigh the potential risk.

Breast Feeding

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

Interactions with Medicines

Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. Tell your healthcare professional if you are taking any other prescription or nonprescription (over-the-counter [OTC]) medicine.

Interactions with Food/Tobacco/Alcohol

Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.

Other Medical Problems

The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:

  • Anemia (low red blood cells) or
  • Bleeding problems or
  • Diabetes or
  • Hyperglycemia (high blood sugar) or
  • Neutropenia (low white blood cells) or
  • Thrombocytopenia (low platelets in the blood)—Use with caution. May make these conditions worse.
  • Infection—May decrease your body's ability to fight infection.

Proper Use of Synribo

A doctor or other trained health professional will give you this medicine. This medicine is given as a shot under your skin.

This medicine is usually given 2 times per day for 14 days of every 28-day treatment cycle.

Missed Dose

This medicine needs to be given on a fixed schedule. If you miss a dose, call your doctor, home health caregiver, or treatment clinic for instructions.

Precautions While Using Synribo

It is very important that your doctor check your progress at regular visits. This will allow your doctor to see if the medicine is working properly and to decide if you should continue to receive it. Blood tests may be needed to check for unwanted effects.

Using this medicine while you are pregnant can harm your unborn baby. Use an effective form of birth control to keep from getting pregnant. If you think you have become pregnant while using this medicine, tell your doctor right away.

Omacetaxine can temporarily lower the number of white blood cells in your blood, increasing the chance of getting an infection. It can also lower the number of platelets, which are necessary for proper blood clotting. If this occurs, there are certain precautions you can take, especially when your blood count is low, to reduce the risk of infection or bleeding:

  • If you can, avoid people with infections. Check with your doctor immediately if you think you are getting an infection or if you get a fever or chills, cough or hoarseness, lower back or side pain, or painful or difficult urination.
  • Check with your doctor immediately if you notice any unusual bleeding or bruising, black, tarry stools, blood in the urine or stools, or pinpoint red spots on your skin.
  • Be careful when using a regular toothbrush, dental floss, or toothpick. Your medical doctor, dentist, or nurse may recommend other ways to clean your teeth and gums. Check with your medical doctor before having any dental work done.
  • Do not touch your eyes or the inside of your nose unless you have just washed your hands and have not touched anything else in the meantime.
  • Be careful not to cut yourself when you are using sharp objects such as a safety razor or fingernail or toenail cutters.
  • Avoid contact sports or other situations where bruising or injury could occur.

This medicine may affect blood sugar levels. Check with your doctor if you are diabetic and notice a change in the results of your blood or urine sugar tests.

Cancer medicines can cause abdominal pain, constipation, diarrhea, nausea, or vomiting, even after receiving medicines to prevent it. Ask your doctor or nurse about ways to control these side effects.

Synribo Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

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

More common
  • Black, tarry stools
  • bleeding gums
  • bloating or swelling of the face, arms, hands, lower legs, or feet
  • blood in the urine or stools
  • bloody nose
  • chills
  • cough
  • fever
  • lower back or side pain
  • painful or difficult urination
  • pale skin
  • pinpoint red spots on the skin
  • rapid weight gain
  • shortness of breath
  • sore throat
  • tingling of the hands or feet
  • troubled breathing with exertion
  • ulcers, sores, or white spots in the mouth
  • unusual bleeding or bruising
  • unusual tiredness or weakness
  • unusual weight gain or loss
Incidence not known
  • Arm, back, or jaw pain
  • blurred vision
  • burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
  • chest pain or discomfort
  • confusion
  • convulsions
  • decreased urination
  • deep, dark purple bruises
  • difficulty with speaking
  • dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
  • double vision
  • dry mouth
  • fainting
  • fast, shallow breathing
  • fast, slow, pounding, or irregular heartbeat or pulse
  • flushed, dry skin
  • fruit-like breath odor
  • headache
  • hives
  • hoarseness
  • inability to move the arms, legs, or facial muscles
  • inability to speak
  • increased hunger
  • increased thirst
  • increased urination
  • irritation
  • itching, pain, redness, or swelling of the skin
  • joint pain, stiffness, or swelling
  • loss of consciousness
  • muscle cramps
  • nausea
  • nervousness
  • pale, clammy skin
  • pounding in the ears
  • rapid breathing
  • rash
  • slow speech
  • stomachache
  • sunken eyes
  • sweating
  • swelling of the eyelids, face, lips, hands, or feet
  • thirst
  • troubled breathing or swallowing
  • unexplained weight loss
  • vomiting of blood or material that looks like coffee grounds
  • wrinkled skin

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 or are bothersome or if you have any questions about them:

More common
  • Abdominal or stomach pain
  • back pain
  • bleeding, blistering, burning, coldness, discoloration of the 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
  • diarrhea
  • difficulty having a bowel movement (stool)
  • difficulty with moving
  • hair loss or thinning of the hair
  • lack or loss of strength
  • loss of appetite
  • muscle pain or stiffness
  • pain in the arms or legs
  • trouble sleeping
  • upper abdominal or stomach pain
  • weight loss
Incidence not known
  • Acid or sour stomach
  • anxiety
  • belching
  • bleeding gums
  • bloody eye
  • bone pain
  • burning, dry, or itching eyes
  • continuous ringing or buzzing or other unexplained noise in the ears
  • darkening of the skin
  • decreased appetite
  • depression
  • double vision
  • dry skin
  • ear pain
  • eye discharge or excessive tearing
  • eye pain
  • general feeling of discomfort or illness
  • hearing loss
  • heartburn
  • increased sweating
  • indigestion
  • itching skin
  • muscle spasm, stiffness, or weakness
  • redness and swelling of the gums
  • redness, pain, swelling of the eye, eyelid, or inner lining of the eyelid
  • stomach discomfort or upset
  • stuffy nose

Other side effects not listed may also occur 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.

See also: Side effects (in more detail)

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