OnabotulinumtoxinA is administered by which route for chronic migraine?

Prepare for the Pharmacology IV – Headache Therapeutics Test. Review the therapeutic approaches, tackle multiple-choice questions with explanations, and boost your test-taking confidence. Ace your exam with precision!

Multiple Choice

OnabotulinumtoxinA is administered by which route for chronic migraine?

Intramuscular injections into the head and neck muscles. OnabotulinumtoxinA works locally at the neuromuscular junction to reduce muscle activity, so it is delivered directly into muscle tissue rather than under the skin, into veins, or by mouth. Subcutaneous or oral routes would not provide the targeted, effective delivery, and IV administration isn’t used due to the need for localized action with minimal systemic spread. In chronic migraine, the toxin is given as multiple small IM injections across specific head/neck muscles to achieve the therapeutic effect.

Intramuscular injections into the head and neck muscles. OnabotulinumtoxinA works locally at the neuromuscular junction to reduce muscle activity, so it is delivered directly into muscle tissue rather than under the skin, into veins, or by mouth. Subcutaneous or oral routes would not provide the targeted, effective delivery, and IV administration isn’t used due to the need for localized action with minimal systemic spread. In chronic migraine, the toxin is given as multiple small IM injections across specific head/neck muscles to achieve the therapeutic effect.

More practice questions