Nuceiva

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Nuceiva is a brand of botulinum toxin type A used to soften frown lines—the vertical creases that form between the eyebrows. Its active ingredient is prabotulinumtoxinA, and it works the same way as other neuromodulators: by temporarily relaxing the small muscles that fold the skin during expression. Nuceiva is a relatively recent arrival to the Canadian market and is the same product sold in the United States under the name Jeuveau.

At a glance

  • Brand of: Botulinum toxin type A (active ingredient prabotulinumtoxinA)
  • Made by: Evolus (originating with South Korean manufacturer Daewoong); distributed in Canada by Clarion Medical Technologies
  • Also known as: Jeuveau in the United States—the same molecule under a different brand name
  • Type: Prescription injectable neuromodulator
  • Cosmetic use (Canada): Authorized specifically for moderate-to-severe frown lines—a narrower on-label scope than some older brands
  • Key point: Nuceiva’s units are specific to it and not interchangeable with Botox or other products

What is Nuceiva?

Nuceiva is a botulinum toxin type A preparation whose active ingredient is prabotulinumtoxinA.[1] Like other neuromodulators, it is a prescription medicine used to temporarily reduce the lines caused by facial movement. It was authorized for sale in Canada by Health Canada in 2019 and brought to the Canadian market by Clarion Medical Technologies; the same molecule is marketed in the United States as Jeuveau.[3] Because it is a newer entrant to a field long dominated by established brands, it is sometimes informally called a “newtox.”

How Nuceiva relates to botulinum toxin type A

Nuceiva belongs to the same botulinum toxin type A family as Botox, Dysport, Xeomin and Daxxify. They share the same core action: the toxin temporarily blocks the release of acetylcholine, the chemical signal that tells a muscle to contract, so the treated muscle relaxes and the overlying skin creases less.[2] For the full science of how this works at the neuromuscular junction, see our entry on botulinum toxin type A.

What makes Nuceiva different

Nuceiva’s distinguishing features are more about its place in the market than its underlying chemistry. It is a comparatively new brand of botulinum toxin type A, positioned as a modern, cosmetically focused option, and is the Canadian counterpart to the United States’ Jeuveau.[3] A notable, and often overlooked, point is the scope of its Canadian authorization: Nuceiva is authorized by Health Canada specifically for frown lines, a narrower on-label cosmetic indication than the broader authorizations some older toxins carry.[1] As with every brand in this category, its dosing units are unique to it, so it is best thought of as another well-established member of the toxin family rather than a fundamentally different kind of product.

What Nuceiva is used for

In Canada, Nuceiva is authorized for the temporary improvement in the appearance of moderate-to-severe glabellar (frown) lines in adults—the vertical creases between the brows.[1] These are a classic example of dynamic wrinkles, the lines produced by repeated expression, and neuromodulators work best on lines that appear with movement rather than those already etched into the skin at rest. It is worth noting that some other neuromodulators also carry Canadian authorization for additional areas such as forehead lines or crow’s feet, whereas Nuceiva’s Canadian cosmetic authorization is focused on the frown-line area.[1]

Onset, duration and what to expect

Like other botulinum toxin treatments, Nuceiva’s effect is not instant; it develops over the days following treatment as the muscle gradually relaxes, with the cosmetic result building over roughly two weeks.[2] Results are temporary—commonly lasting on the order of three to four months, though this varies from person to person—after which movement gradually returns and maintaining a smooth result means repeating treatment periodically.[3] As with every botulinum toxin brand, Nuceiva’s dosing units are specific to it and are not interchangeable with those of Botox, Dysport or any other product, which is why dosing must be handled by an experienced injector.[2]

Safety, and Nuceiva in Canada

Nuceiva is a prescription medicine that should be administered only by a qualified, trained healthcare professional after an individual assessment.[1] Common, temporary side effects reported with botulinum toxin treatments can include mild bruising, headache or—if the toxin affects nearby muscles—a temporary drooping of the brow or eyelid.[2] Because dose and injection points must be tailored to the individual, and units differ between products, treatment should be planned carefully. Nuceiva is authorized by Health Canada, and as with all prescription drugs in Canada there are restrictions on how such products may be advertised to the public.[1] Nuceiva™ is a trademark of its respective owner. This entry is educational and does not replace a consultation with a licensed clinician.

Related glossary terms

Clinical & editorial sources

  1. Health Canada. Regulatory Decision Summary — Nuceiva (prabotulinumtoxinA). Drug and Health Products Portal. dhpp.hpfb-dgpsa.ca
  2. Padda IS, Tadi P. Botulinum Toxin. StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; updated 2023 Nov 6. NBK557387
  3. Nakatsui Dermatology (Edmonton, AB). Nuceiva — the Newest Botulinum Toxin on the Market. nakatsuiderm.com

This glossary entry provides general educational information and does not replace an individual clinical assessment or medical advice.

Clinically reviewed by: Leah Zawawi, RPN | Medical Aesthetics & Injectables.

Last reviewed: August 2026.

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