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Muscle spasms
Only 4 drugs may be compared at once

Generic Name and Formulations:

Rimabotulinumtoxin B 2500 Units/0.5mL, 5000 Units/1mL, 10000 Units/2mL; soln for IM inj; contains human albumin; preservative-free.

Select therapeutic use:

Indications for MYOBLOC:

Cervical dystonia, to reduce severity of abnormal head position and neck pain.


Should be administered and managed by experienced physicians. Individualize. Treatment-experienced: Initially 2500 to 5000 Units divided among affected muscles. Treatment-naïve: use lower initial dose. Adjust subsequent doses based on response.


Not recommended.


Infection at proposed inj site.


Not interchangeable with other botulinum toxin products. Spread of botulinum toxin effects my be observed beyond the local injection site. Pre-existing dysphagia. Respiratory disorders. Neuromuscular disorders (eg, myasthenia gravis, ALS, Lambert-Eaton syndrome); monitor closely. Contains human albumin; monitor for possible viral disease transmission. Pregnancy (Cat.C). Nursing mothers.


May be potentiated by aminoglycosides or other agents interfering with neuromuscular transmission (eg, curare-like compounds). Concomitant other botulinum toxin products may potentiate neuromuscular paralysis.

Pharmacological Class:

Neuromuscular blocker.

Adverse Reactions:

Inj site reactions, dry mouth, dysphagia (may be severe), dyspepsia, headache; respiratory difficulties, allergic reactions (discontinue if occurs).

Generic Availability:


How Supplied:

Single-use vial—1