In April, Chepngetich withdrew from the London Marathon, saying she was "not in the right place mentally or physically to race my best".

Hydrochlorothiazide is used to treat fluid retention and hypertension.

Ruth Chepngetich, world record holder in women's marathon, suspended for doping

Tobi Amusan, world record holder in the women's 100 metres hurdles, has had her provisional doping suspension lifted with immediate effect, the Athletics Integrity Unit (AIU) said on Thursday.

World hurdles champion Amusan's doping suspension lifted

Russian race walker Yelena Lashmanova has been banned for two years for the use of prohibited substances and will be stripped of her 2012 Olympics gold medal in the 20-km race, the Athletics Integrity Unit (AIU) said on Monday.

AIU bans Russian race walker Yelena Lashmanova for doping, to be stripped of 2012 Olympics gold

Nigerian sprinter Blessing Okagbare has been banned for 10 years for doping and refusing to co-operate with the investigation, the Athletics Integrity Unit (AIU) said on Friday.