OnabotulinumtoxinA
Botox (onabotulinumtoxinA) is a prescription neurotoxin medication used to temporarily improve the appearance of facial lines and treat various medical conditions involving muscle overactivity, excessive sweating, and certain neurological disorders. It is administered via injection by healthcare professionals and works by blocking nerve signals to targeted muscles or glands.
Botox is an injectable neurotoxin used for cosmetic wrinkle reduction and treatment of medical conditions involving muscle spasms, migraines, and excessive sweating.
Key facts at a glance
- RxNorm
- 203279
- Generic
- Botox
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Cosmetically used to improve appearance of moderate to severe glabellar lines, crow's feet, and forehead lines. Medically indicated for chronic migraine prevention, cervical dystonia, upper limb spasticity, blepharospasm, strabismus, hyperhidrosis (excessive underarm sweating), overactive bladder, and urinary incontinence from neurogenic detrusor overactivity.
Contains onabotulinumtoxinA, a purified neurotoxin from Clostridium botulinum bacteria. It works by blocking acetylcholine release at the neuromuscular junction, causing temporary muscle relaxation or by blocking eccrine sweat gland secretion, reducing sweat production. Effects are temporary and typically last 3-4 months.
Carries a black box warning for potential distant spread of toxin effects causing serious, potentially fatal reactions including breathing and swallowing difficulties. Must be administered only by qualified healthcare professionals. The effects of Botox are not interchangeable with other botulinum toxin products (Botox, Dysport, Xeomin, Jeuveau). Patients may develop neutralizing antibodies reducing effectiveness over time. Seek immediate medical attention if experiencing difficulty breathing, speaking, or swallowing after treatment.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed September 3, 2026. · Read our editorial policy