Med Spa Owner Agrees to Plead Guilty to Performing Illegal Injections Using Unapproved Prescription Drugs

BOSTON – A Quincy man has been charged and has agreed to plead guilty to allegedly injecting clients of his business, Rodrigo Beauty Inc., with unapproved botulinum toxin obtained from illegitimate sources outside the United States, resulting in numerous severe cases of botulism.

Rodrigo de Medeiros Siqueira, 33, was charged and agreed to plead guilty to one count of misbranding of a drug after shipment in interstate commerce with the intent to defraud or mislead. A plea hearing has not yet been scheduled by the Court. Medeiros Siqueira was arrested and charged by complaint in October 2025.

According to the charging documents, beginning in or around August 2022, Medeiros Siqueira offered various cosmetic injection procedures, including the injection of botulinum toxin prescription drugs, to clients of Rodrigo Beauty, despite not being licensed to prescribe, dispense, or administer prescription drugs or perform injections. It is alleged that Medeiros Siqueira falsely represented to clients that he was a licensed medical professional authorized to perform injections and made false statements to clients regarding the identity and source of the botulinum toxin products he was using for their injection procedures. Beginning in or around late May 2025, numerous Rodrigo Beauty clients were diagnosed with botulism, allegedly as a result of injections Medeiros Siqueira performed using unapproved botulinum toxin.

Botulism is a rare and dangerous illness that can result from, among other things, the injection of botulinum toxin. Iatrogenic botulism is caused by botulinum toxin circulating in the blood and spreading beyond the injection site, potentially resulting in life-threatening symptoms, including blurred or double vision, drooping eyelids, slurred speech, and/or difficulty swallowing or breathing. While botulinum toxin is generally safe when administered by trained medical professionals, improper dosing, administration technique, or use of non-FDA-approved products can result in severe cases of botulism.

The charge of misbranding of a drug after shipment in interstate commerce with the intent to defraud or mislead provides for a sentence of up to three years in prison, one year of supervised release and a fine of $250,000 or twice the gross gain or loss from the offense, whichever is greater. Sentences are imposed by a federal district court judge based upon the U.S. Sentencing Guidelines and statutes which govern the determination of a sentence in a criminal case.

If you or a family member believe you received services involving illegal injections and/or unapproved drugs or devices from Medeiros Siqueira or Rodrigo Beauty, please complete the questionnaire located on the FDA’s website at: https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/criminal-investigations/oci-vw-assistance-rodrigo-beauty. Information about the status of the case is located on the U.S. Attorney’s Office website: https://www.justice.gov/usao-ma/victim-and-witness-assistance-program/united-states-v-rodrigo-de-medeiros-siqueira.

United States Attorney Leah B. Foley and Fernando McMillan, Special Agent in Charge of the Food and Drug Administration, Office of Criminal Investigations, New York Field Office made the announcement today. Assistant U.S. Attorney Leslie A. Wright of the Health Care Fraud Unit is prosecuting the case.

The details contained in the charging documents are allegations. The defendant is presumed innocent unless and until proven guilty beyond a reasonable doubt in a court of law.