AIU bans 2:04 marathoner Kimaiyo two years for a diuretic
He told the AIU he took painkillers belonging to his wife and did not know what chlortalidone was.
The Athletics Integrity Unit has banned Kenya's Philemon Kiplimo Kimaiyo for two years after a urine sample came back positive for chlortalidone, a diuretic that can be used to mask the presence of other banned substances.
Kimaiyo is a 2:04:01 marathoner. The AIU says the ban runs for two years from 1 September 2026, and that his results are disqualified from 19 July 2026.
What he told the AIU
Per CITIUS MAG, Kimaiyo told the AIU he did not know what chlortalidone was. About a week before the out-of-competition test, he said he had taken painkillers belonging to his wife for soreness after a long run, but could not recall the name of them or what they looked like. He later provided a photograph of a box labeled "OLMECURE-CT 40", a product CITIUS MAG says lists Olmesartan Medoxomil with Chlortalidone Tablets.
The 1 September 2026 start date is the day he signed his admission of guilt.
What it costs him
The disqualification window starts 19 July 2026, so it takes out his third place at the Bogota Half Marathon in Colombia on 25 July. Everything before that stands.
That matters, because his best runs are older than the window. Last year he ran his marathon PB finishing second at the Hamburg Marathon, and that fall he was eighth at the Chicago Marathon in 2:06:14. Those results are untouched by this case.
Why a diuretic is a positive at all
Diuretics are not performance enhancers in the way a blood booster or a steroid is. They make you urinate more. The reason they sit on the banned list is the one CITIUS MAG spells out, they can be used to mask the presence of other banned substances in a sample. So a chlortalidone finding is treated as a doping violation on its own, without anyone needing to find a second drug.
The contamination-style defence Kimaiyo offered, a medicine belonging to a family member taken without checking the label, is a familiar one in AIU cases. It did not change the outcome here. He signed an admission of guilt and took the two years.
The AIU has posted the case details in its announcement. Kimaiyo is eligible again at the end of the two-year period that began on 1 September 2026.
Kiplimo told the AIU he didn't know what chlortalidone was.
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