Myobloc (Injection)

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Myobloc (Injection) Drug and Prescription Information

Myobloc (Injection)

Myobloc (Injection) Medication Classification


Myobloc (Injection) Brandname


Myobloc (Injection) is used for the Treatment

Botulinum Toxin Type B (BOT-yoo-li-num TOX-in type B) Treats symptoms of stiffness or uncontrolled muscle movements in the neck that are caused by a condition called cervical dystonia.

When To Not Use Myobloc (Injection)

You should not use this medicine if you have had an allergic reaction to any type of botulinum toxin.

How Should You Use Myobloc (Injection)


  • Your doctor will prescribe your exact dose and tell you how often it should be given. This medicine is given as a shot into one of your muscles.
  • A nurse or other trained health professional will give you this medicine. It may also be given by a home health caregiver.
  • Never share your medicine with anyone.
  • If a dose is missed:
  • Call your doctor or home health caregiver for instructions.

Proper Myobloc (Injection) Storage

Store Myobloc (Injection) at room temperature away from sunlight and moisture unless otherwise stated by manufacturer's instructions or labelling. Keep Myobloc (Injection) and all medications out of the reach of children.

What To Avoid While Using Myobloc (Injection)

Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.

  • Make sure your doctor knows if you are also using amikacin, atracurium (Tracrium®), gallamine (Flaxedil®), gentamicin (Garamycin®), kanamycin (Kantrex®), neomycin, netilmicin (Netromycin®), pancuronium (Pavulon®), streptomycin, tobramycin, tubocurarine (Tubarine®), or vecuronium (Norcuron®).
  • If you need to receive an injection of any other type of botulinum toxin within 4 months after receiving this medicine, tell your doctor when you last received a dose of botulinum toxin type B.

Myobloc (Injection) Warnings

  • Make sure your doctor knows if you are pregnant or breastfeeding, or if you have trouble swallowing, or have any type of nerve or muscle disorder such as ALS (Lou Gehrig's disease), myasthenia gravis, or Lambert-Eaton syndrome.

Myobloc (Injection) Side Effects

Call your doctor right away if you notice any of these side effects:

  • Muscle weakness or paralysis that occurs several weeks after you receive this medicine
  • Sudden vision changes, trouble speaking, muscle weakness, or inability to move
  • Trouble swallowing
  • If you notice these less serious side effects, talk with your doctor:
  • Dry mouth
  • Pain where the shot is given
  • Stomach upset

Myobloc (Injection) Ratings

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