RECRUITING Phase 4 ClinicalTrials.gov

BoTox Into the Sternocleidomastoid Muscles (SCM)

Sponsor: Boston Medical Center • ClinicalTrials.gov ID: NCT06903975

Registry updated: 2026-08-31

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Description

Botulinum toxin injections have been used both in the face and neck for many years. However, injection into the sternocleidomastoid muscle (SCM) has only been done to treat neck spasms. In this study botulinum toxin will be injected into the SCM to determine if this will result in a temporary slimming effect on the neck and produce a more feminine, youthful neck contour.

Interventions

prabotulinumtoxinA-xvfs (Drug)
Each participant will receive 60 units (U) of prabotulinumtoxinA-xvfs into each SCM for a total of 120 U. Participants will return in 2 weeks to determine if any touch-up injection is needed.

Eligibility criteria

Inclusion Criteria: * Age eligible individual seeking a more feminine neck appearance Exclusion Criteria: * Prior neuromodulator injections in the sternocleidomastoid muscles (SCM) within the past year * Current anticoagulant use * Body mass index (BMI) \>30 * Anticipation of significant weight gain or loss during the study period (e.g. patients taking or planning to take within the study period a semaglutide medication.) * Prior allergy to botulinum toxin A * Currently pregnant or breastfeeding

Conditions

Neck Muscle Issue

Locations

The Spiegel Center — Newton, Massachusetts, United States

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Official Source

Data sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.

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