The International Tennis Integrity Agency [ITIA] have banned Goncalo Oliveira for four years due to a positive drugs test.
Oliveira was given a provisional suspension in January after he tested positive for methamphetamine from a sample two months prior.
He had an in-competition doping control test taken at the Manzanillo Open in Mexico.
Oliveira claimed that 'contamination via kissing or environmental contamination' caused his positive test of the banned substance.
But an independent tribunal did not receive 'clear, cogent, persuasive or concrete evidence' of either from the 30-year-old.
As per the ITIA, the Portuguese-born Venezuelan has suspended for four years under the Tennis Anti-Doping Programme [TADP].
Oliveira was sent a pre-charge notice of his anti-doping rule violation