Meldonium burst to the fore in 2016 when Maria Sharapova announced that she had failed a drugs test. Although she was banned for 15 months, more than 170 athletes have since tested positive for the substance, Olympians included.

The International Olympic Committee suspended Russia in December after revelations of a widespread and highly orchestrated doping conspiracy, which first emerged before the Rio 2016 Summer Games.
The International Olympic Committee suspended Russia in December after revelations of a widespread and highly orchestrated doping conspiracy, which first emerged before the Rio 2016 Summer Games. (AP Archive)

Russian curler Alexander Krushelnitsky has been charged with a doping offence at the PyeongChang Olympics.

Krushelnitsky, who won bronze in mixed doubles with his wife Anastasia Bryzgalova, tested positive for Meldonium, Russian officials said on Monday.

Here are some of the key issues surrounding the drug:

What is Meldonium?

A Latvian-made drug available over the counter in Russia and other Eastern European and former Soviet countries, often without a prescription. The drug's manufacturer, Grindeks, says it is mostly aimed at people with heart conditions, though it can also be used for "physical and psycho-emotional overload" in otherwise healthy people. 

Meldonium's inventor, chemist Ivars Kalvins, has said it was given to Soviet soldiers fighting in Afghanistan to boost their stamina. 

However, Grindeks and Kalvins have argued it shouldn't be banned in sports, with the manufacturer saying that it "cannot improve athletic performance, but it can stop tissue damage" during intense exercise. 

Meldonium is usually known by the brand name Mildronate, though other names have been used.

According to the US Anti-Doping Agency, Mildronate is available in oral capsules or solution for injection.
According to the US Anti-Doping Agency, Mildronate is available in oral capsules or solution for injection. (AP Archive)

Why was it banned?

In September 2015, The World Anti-Doping Agency said that Meldonium would be banned as of January 1, 2016. 

A study conducted at the European Games in June 2015 and later published by the British Journal of Sports Medicine found 66 of 762 athletes taking Meldonium, which the authors called "excessive and inappropriate use ... in a generally healthy athlete population." 

It was offered to Russian national teams in numerous sports and was believed to help athletes tolerate tough training.

Maria Sharapova, the five-time Grand Slam tennis champion was banned for two years, later reduced to 15 months.
Maria Sharapova, the five-time Grand Slam tennis champion was banned for two years, later reduced to 15 months. (AP Archive)

Who else tested positive?

Tennis player Maria Sharapova is the most famous person to be banned for Meldonium, serving a 15-month sanction after testing positive at the 2016 Australian Open. 

Shortly after Meldonium was banned, more than 170 athletes failed tests, almost all from Eastern European countries, including Olympic medalists in sports ranging from figure skating to wrestling. 

Heavyweight boxer Alexander Povetkin had a title fight called off for a positive test. There have been few cases since 2016, though the Russian national junior women's handball team was disqualified from last year's European championships when three players tested positive.

Russia could lose its chance to be reinstated before the end of the Winter Olympics because of a doping charge against curling bronze medalist Alexander Krushelnitsky. February 13, 2018.
Russia could lose its chance to be reinstated before the end of the Winter Olympics because of a doping charge against curling bronze medalist Alexander Krushelnitsky. February 13, 2018. (Reuters)

What has happened to athletes who tested positive?

Almost all of the early cases were dropped when athletes insisted they had stopped taking Meldonium in 2015, before it was banned. The usually low concentrations of the drug in their samples backed up those arguments, and WADA accepted findings of "no fault or negligence" in those cases. 

However, anyone taking Meldonium after the January 2016 cutoff date faces the same potential penalty – a ban of up to four years – as for any other banned substance. Sharapova's 15-month sanction was lower than the maximum, partly because the Court of Arbitration for Sport accepted she hadn't known Meldonium was banned.

Russia were banned as a team from the Olympics in December after investigations revealed an extensive doping plot culminating at the Sochi 2014 Winter Games, where the hosts topped the medals table. February 9, 2018
Russia were banned as a team from the Olympics in December after investigations revealed an extensive doping plot culminating at the Sochi 2014 Winter Games, where the hosts topped the medals table. February 9, 2018 (AFP)

What next for Krushelnitsky and Russia?

The Court of Arbitration for Sport has yet to set a date to hear his case. If he is found guilty, he could be banned and forced to return his Olympic bronze medal. 

The International Olympic Committee could decide against formally reinstating Russia for the PyeongChang closing ceremony, meaning its athletes would not be allowed to march under the Russian flag.

Source: AP