Myobloc

Generic Name: Botulinum Toxin Type B (BOT-ue-li-num)
Brand Name: Myobloc

Myobloc is used for:

Reducing the severity of abnormal head position and neck pain associated with neck problems. It may also be used for other conditions as determined by your doctor.

Myobloc is a neurotoxin. It works by blocking nerve impulses to the muscles, temporarily paralyzing the muscle.

Do NOT use Myobloc if:

• you are allergic to any ingredient in Myobloc or other botulinum product
• you have an infection at the injection site

Contact your doctor or health care provider right away if any of these apply to you.

Before using Myobloc :

Some medical conditions may interact with Myobloc . Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:

• if you are pregnant, planning to become pregnant, or are breast-feeding
• if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
• if you have allergies to medicines, foods, or other substances
• if you have nerve problems or diseases (eg, amyotrophic lateral sclerosis, motor neuropathy), muscle problems or diseases (eg, myasthenia gravis, Lambert-Eaton syndrome), bleeding disorders, seizures, or severe weakness or wasting of the muscles at the injection site
• if you have a history of heart problems (eg, irregular heartbeat, recent heart attack); swallowing or breathing problems (eg, asthma); eye problems (eg, glaucoma); or an overactive thyroid
• if you have a skin infection; or inflammation, scarring, or other skin disorders at the injection site
• if you plan to have surgery or you have received Myobloc or any other botulinum toxin in the past 4 months
• if you have recently received an antibiotic by injection, or you also take muscle relaxants, allergy or cold medicine, or sleep medicine

Some MEDICINES MAY INTERACT with Myobloc . Tell your health care provider if you are taking any other medicines, especially any of the following:

• Aminoglycosides (eg, gentamicin), anticholinesterase medicines (eg, neostigmine), lincosamides (eg, clindamycin), magnesium, neuromuscular blockers (eg, atracurium), polymyxin, or quinidine because the risk of toxic effects may be increased
• Anticoagulants (eg, warfarin) because the risk of bleeding at the injection site may be increased

This may not be a complete list of all interactions that may occur. Ask your health care provider if Myobloc may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.

How to use Myobloc :

Use Myobloc as directed by your doctor. Check the label on the medicine for exact dosing instructions.

• Myobloc comes with an extra patient information sheet called a Medication Guide. Read it carefully. Read it again each time you get Myobloc refilled.
• Myobloc is usually given as an injection at your doctor's office, hospital, or clinic.
• If you miss a dose of Myobloc , contact your doctor right away.

Ask your health care provider any questions you may have about how to use Myobloc .

Important safety information:

• Myobloc may cause dizziness or drowsiness. These effects may be worse if you take it with alcohol or certain medicines. Use Myobloc with caution. Do not drive or perform other possibly unsafe tasks until you know how you react to it.
• Do NOT take more than the recommended dose or use for longer than prescribed without checking with your doctor.
• Do not switch brands of Myobloc . Contact your doctor if you have any questions.
• Myobloc contains albumin, which comes from human blood. There is a very rare risk of getting a viral disease or a central nervous system disease called Creutzfeldt-Jakob disease from products with albumin. No cases of these problems have been found in patients who have used Myobloc .
• To prevent injury, resume normal activities gradually after using Myobloc .
• Myobloc should not be used in CHILDREN; safety and effectiveness in children have not been confirmed.
• PREGNANCY and BREAST-FEEDING: It is not known if Myobloc can cause harm to the fetus. If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using Myobloc while you are pregnant. It is not known if Myobloc is found in breast milk. If you are or will be breast-feeding while you use Myobloc , check with your doctor. Discuss any possible risks to your baby.

Possible side effects of Myobloc :

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome:

Anxiety; back pain; dizziness; drowsiness; dry eyes; dry mouth; flu-like symptoms; headache; increased cough; indigestion; nausea; neck pain; pain, redness, swelling, or tenderness at the injection site; runny nose; sensitivity to light; sweating; upset stomach; weakness of the muscles at or near the injection site.

Seek medical attention right away if any of these SEVERE side effects occur:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); bleeding at the injection site; chest pain; difficulty swallowing or breathing; double or blurred vision, or other vision changes; fever, chills, or persistent sore throat; irregular heartbeat; loss of bladder control; loss of strength; paralysis; pneumonia; seizures; severe or persistent muscle weakness or dizziness; shortness or breath; speech changes or problems; swelling of the hands or feet; vaginal irritation, odor, or discharge; wheezing.

This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. You may also report side effects at http://www.fda.gov/medwatch.

If OVERDOSE is suspected:

Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center (http://www.aapcc.org), or emergency room immediately. Symptoms may include body weakness; paralysis.

Proper storage of Myobloc :

Myobloc is usually handled and stored by a health care provider. If you are using Myobloc at home, store Myobloc as directed by your pharmacist or health care provider. Keep Myobloc out of the reach of children and away from pets.

General information:

• If you have any questions about Myobloc , please talk with your doctor, pharmacist, or other health care provider.
• Myobloc is to be used only by the patient for whom it is prescribed. Do not share it with other people.
• If your symptoms do not improve or if they become worse, check with your doctor.

This information is a summary only. It does not contain all information about Myobloc . If you have questions about the medicine you are taking or would like more information, check with your doctor, pharmacist, or other health care provider.