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Myobloc

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Myobloc

Myobloc Patient Information Including Side Effects

Brand Names: Myobloc

Generic Name: rimabotulinumtoxinB (Myobloc) (Pronunciation: RYE ma BOT ue LYE num TOX in B)

What is rimabotulinumtoxinB (Myobloc) (Myobloc)?

RimabotulinumtoxinB (Myobloc), also called botulinum toxin type B, is made from the bacteria that causes botulism. Botulinum toxin blocks nerve activity in the muscles, causing a temporary reduction in muscle activity.

Myobloc is used to treat cervical dystonia (severe spasms in the neck muscles).

Myobloc may also be used for other purposes not listed in this medication guide.

What are the possible side effects of Myobloc (Myobloc)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

The botulinum toxin contained in this medication can spread to other body areas beyond where it was injected. This has caused serious life-threatening side effects in some people receiving botulism toxin injections, even for cosmetic purposes.

Call your doctor at once if you have any of these serious side effects, some of which can occur up to several weeks after an injection:

  • trouble breathing, talking, or swallowing;
  • hoarse voice, drooping eyelids;
  • unusual or severe muscle weakness (especially in a body area that was not injected with the medication);
  • loss of bladder control;
  • problems with vision; or
  • chest pain.

Less serious side effects may include:

  • pain or muscle weakness near where the medicine was injected;
  • headache, joint or back pain;
  • dry mouth, nausea, upset stomach;
  • fever, cough, sore throat, flu symptoms;
  • pain or stiffness in your neck; or
  • dizziness, drowsiness, anxiety.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Read the Myobloc (botulinum toxin type b) Side Effects Center for a complete guide to possible side effects

What is the most important information I should know about Myobloc (Myobloc)?

The botulinum toxin contained in this medication can spread to other body areas beyond where it was injected. This has caused serious life-threatening side effects in some people receiving botulism toxin injections, even for cosmetic purposes.

Call your doctor at once if you have drooping eyelids, vision problems, severe muscle weakness, loss of bladder control, or trouble breathing, talking, or swallowing. Some of these effects can occur up to several weeks after a botulinum toxin injection.

Do not seek botulinum toxin injections from more than one medical professional at a time. If you switch healthcare providers, be sure to tell your new provider how long it has been since your last botulinum toxin injection.

Using this medication more often than prescribed will not make it more effective and may result in serious side effects.

You should not receive this medication if you are allergic to botulinum toxin, or if you have a skin infection in the area where the medicine will be injected.

Before receiving a botulinum toxin injection, tell your doctor if you have ALS ( Lou Gehrig's disease), myasthenia gravis, or Lambert-Eaton syndrome.

The effects of a botulinum toxin injection are temporary. Your symptoms may return completely within 3 months after an injection. After repeat injections, it may take less and less time before your symptoms return, especially if your body develops antibodies to the botulinum toxin.

Side Effects Centers
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Report Problems to the Food and Drug Administration

 

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.


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