Leah B. Foley United States Attorney for the District of Massachusetts | Department of Justice
A Quincy, Massachusetts man pleaded guilty on May 6 in federal court to injecting clients with unapproved prescription drugs at his business, Rodrigo Beauty Inc., resulting in several severe cases of botulism.
Rodrigo de Medeiros Siqueira, age 33, admitted to one count of misbranding a drug after shipment in interstate commerce with the intent to defraud or mislead. U.S. District Court Judge Richard G. Stearns scheduled sentencing for August 12, 2026. Medeiros Siqueira was arrested and charged by complaint in October 2025.
According to prosecutors, beginning around August 2022, Medeiros Siqueira offered cosmetic injection procedures involving botulinum toxin drugs despite not being licensed to prescribe or administer such medications. He falsely claimed he was a licensed medical professional and made misleading statements about the identity and source of the products used during these procedures. In late May 2025, numerous clients were diagnosed with botulism after receiving injections from him using unapproved substances.
Botulism is a rare but dangerous illness that can result from improper injection of botulinum toxin. Symptoms may include blurred vision, drooping eyelids, slurred speech, and difficulty swallowing or breathing. The risk increases when non-Food and Drug Administration-approved products are used or when injections are performed by individuals without proper training.
Authorities advise anyone who believes they received illegal injections or unapproved drugs from Medeiros Siqueira or Rodrigo Beauty to complete a questionnaire available on the Food and Drug Administration’s website. Information about the status of this case is also posted on the U.S. Attorney’s Office website.
The charge carries a maximum sentence of three years in prison, one year supervised release, and up to $250,000 in fines or twice the gross gain or loss from the offense—whichever is greater. Sentencing will be determined according to federal guidelines and statutes governing criminal cases.
United States Attorney Leah B. Foley said her office made this announcement together with Fernando McMillan of the Food and Drug Administration's Office of Criminal Investigations New York Field Office; she also acknowledged assistance from the Massachusetts Department of Public Health as well as Assistant U.S. Attorney Leslie A. Wright who is prosecuting this case.
The U.S. Attorney for the District of Massachusetts enforces federal laws through prosecutions including national security threats and civil rights violations; serves all residents statewide; advances community initiatives on civil rights; maintains facilities at multiple locations across Massachusetts; employs over 200 staff members; handles both criminal prosecutions and civil litigation for the United States; operates offices throughout Massachusetts for public safety engagement; and traces its origins back to its founding in 1789 as one of America’s earliest such entities according to the official website.
