Blessing Okagbare has been banned for 10 years for multiple breaches of the World Athletics Anti-Doping Rules.
The former African 100m champion got withdrawn from competing at the 2020 Tokyo Olympics after a result of her testing came out positive for a banned substance.
The AIU handed down a ban of five years for the presence and use of multiple prohibited substances.
Also, another five years for her refusal to co-operate with the AIU’s investigation into her case.
The AIU said it collected the sample from Okagbare during an out-of-competition test on July 19.
It further revealed the WADA-accredited laboratory that analysed the sample notified the AIU of the adverse analytical finding.
Earlier, a man linked with Okagbare became the first man to be charged to court for allegedly providing performance-enhancing drugs to athletes competing in last summer’s Tokyo Olympics.
The list of athletes includes Nigeria’s Blessing Okagbare.
Furthermore, Okagbare can appeal against the Disciplinary Tribunal’s decision at the Court of Arbitration for Sport (CAS) within 30-days.