In a statement the International Tennis Integrity Agency, which governs the sport's anti-doping programme, ruled that Swiatek's anti-doping rule violation (ADRV) was not intentional and that she bore no significant fault or negligence for the positive test on "the lowest end of the range".
The ITIA accepted that Swiatek's positive doping test had been caused by her contaminated medication, melatonin, which she had taken for jet lag and sleep issues.
Swiatek wrote on Instagram: "I'm finally allowed... so I instantly want to share with you something that became the worst experience of my life. In the last 2.5 months I was subject to strict ITIA proceedings, which confirmed my innocence. The only positive doping test in my career, showing unbelievably low level of a banned substance I've never heard about before, put everything I've worked so hard for my entire life into question.
"Both me and my team had to deal with tremendous stress and anxiety. Now everything has been carefully explained, and with a clean slate I can go back to what I love most. I know I will be stronger than ever.
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