Maria Sharapova said on Wednesday she will appeal the two-year doping ban handed down to her by the International Tennis Federation (ITF) for doping and which threatens to end her career.

The 29-year-old tested positive for the controversial banned medication meldonium during January's Australian Open.

"While the tribunal concluded correctly that I did not intentionally violate the anti-doping rules, I cannot accept an unfairly harsh two-year suspension," Sharapova wrote on her Facebook page.

"The tribunal, whose members were selected by the ITF, agreed that I did not do anything intentionally wrong, yet they seek to keep me from playing tennis for two years. I will immediately appeal the suspension portion of this ruling to CAS, the Court of Arbitration for Sport."