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Botulinum Toxin Type B: uses, dosing, side effects & brands

Botulinum Toxin Type B is a medicine sold in the U.S. under one brand. Below: what the FDA label says, every product that contains it, what the pills look like, and its recall record.

By the pharmaranks editorial teamReviewed against the FDA (openFDA label, NDC Directory & Enforcement) sourcesUpdated Jul 24, 2026How we research

Key facts

Available as
Injectable
Sold as
Myobloc
Prescription?
Prescription only
Generic available?
Not in our catalog

Every botulinum toxin type b product we track (1)

Same active ingredient — different manufacturer, form, price and FDA recall record. That last one is what our independent score measures.

Only one: Myobloc.

What people report to the FDA about botulinum toxin type b

The FDA Adverse Event Reporting System (FAERS) collects reports from patients and clinicians. It holds 37 reports naming botulinum toxin type b, and the FDA flagged 86% of those reports as serious. The effects reported most often — leaving out reports about overdose, misuse or the condition being treated, which dominate the raw list for common medicines:

  • constipation3 reports
  • dry mouth3 reports
  • dysphagia3 reports
  • hypoaesthesia3 reports
  • abortion spontaneous2 reports
  • accommodation disorder2 reports
  • facial spasm2 reports
  • feeling abnormal2 reports

Read these as a signal, not a rate. A report does not mean botulinum toxin type b caused the effect — anyone can file one, and many describe people taking several medicines for several conditions. Crucially there is no denominator: FAERS does not record how many people took the drug, so these counts cannot be turned into “X% of patients” — a bigger number often just means a more widely used or more talked-about drug. Duplicates exist, and publicity drives reporting. For what is actually established, read the FDA label.

Source: openFDA drug/event (FAERS), retrieved September 25, 2026.

Related calculators

How long it stays in your system →

Frequently asked questions

Can you take botulinum toxin type b with other medicines?

It depends on the medicine. We check it against the FDA labels rather than guessing: our interaction checker searches each drug's own label for the other and quotes what it says, naming the section it came from. Run botulinum toxin type b against whatever else you take — and remember that a label not naming a drug is not the same as that combination being safe.

What forms does botulinum toxin type b come in?

Across the brands we track, botulinum toxin type b is currently marketed as injectable, per the FDA's National Drug Code Directory. Each form is dosed differently — follow the label for the exact product you were prescribed.

Is there a generic botulinum toxin type b?

We do not currently list a generic-labelled botulinum toxin type b product. That does not always mean none exists — it means none appears under a generic name in the FDA data we track. Ask your pharmacist.

Cite this page
APA
pharmaranks. (2026, July 24). Botulinum Toxin Type B: uses, dosing, side effects & brands. https://pharmaranks.com/drugs/botulinum-toxin-type-b
MLA
“Botulinum Toxin Type B: uses, dosing, side effects & brands.” pharmaranks, 24 July 2026, https://pharmaranks.com/drugs/botulinum-toxin-type-b.

We summarise public FDA and NIH sources — for a clinical claim, cite the primary source we link to as well.

Sources: FDA openFDA drug label, National Drug Code Directory, and Enforcement (recall) database. This page reproduces public FDA data and is not medical advice. Dosing is set by your prescriber.

Read the full FDA label for botulinum toxin type b on DailyMed (NIH) ↗.