Leah B. Foley United States Attorney for the District of Massachusetts | Department of Justice
A Quincy resident has agreed to plead guilty to federal charges after allegedly administering unapproved prescription drugs at his cosmetic business, Rodrigo Beauty Inc., which resulted in multiple cases of botulism among clients.
Rodrigo de Medeiros Siqueira, 33, was charged with one count of misbranding a drug after shipment in interstate commerce with intent to defraud or mislead. The plea hearing has not yet been scheduled. Medeiros Siqueira was initially arrested and charged by complaint in October 2025.
According to court documents, starting around August 2022, Medeiros Siqueira offered cosmetic injection procedures involving botulinum toxin prescription drugs at Rodrigo Beauty without being licensed to prescribe or administer such drugs. Authorities allege that he falsely told clients he was a licensed medical professional and made false statements about the source and identity of the products used. In late May 2025, several clients developed botulism after receiving injections with unapproved products from him.
Botulism is a serious illness that can result when botulinum toxin spreads beyond the intended area following an injection. Symptoms may include blurred vision, drooping eyelids, slurred speech, and difficulty swallowing or breathing. While trained professionals can safely administer approved botulinum toxin products, using non-approved versions or improper techniques can lead to severe health consequences.
The charge carries a maximum sentence of three years in prison, one year of supervised release, and a fine up to $250,000 or twice the gross gain or loss from the offense. Sentencing will be determined by a federal judge according to U.S. Sentencing Guidelines.
Authorities have asked anyone who believes they received illegal injections or unapproved drugs from Rodrigo Beauty Inc. or Medeiros Siqueira to complete an online questionnaire on the FDA’s website (https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/criminal-investigations/oci-vw-assistance-rodrigo-beauty). Updates on the case are available 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 stated: "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." Fernando McMillan, Special Agent in Charge of the Food and Drug Administration’s Office of Criminal Investigations for New York Field Office also participated in announcing these charges.
Assistant U.S. Attorney Leslie A. Wright is prosecuting this case.
