S5. Diuretics and Other Masking Agents

If a Substance or Method is not defined in this list, please verify with your Anti-Doping Organization.

Masking agents are prohibited. They include:

  • diuretics
  • desmopressin
  • plasma expanders (e.g. glycerol; intravenous administration of albumin, dextran, hydroxyethyl starch and mannitol)
  • probenecid
  • and other substances with similar biological effect(s).

Local administration of felypressin in dental anaesthesia is not prohibited.

Diuretics include:

  • acetazolamide
  • amiloride
  • bumetanide
  • canrenone
  • chlortalidone
  • etacrynic acid
  • furosemide
  • indapamide
  • metolazone
  • spironolactone
  • thiazides (e.g. bendroflumethiazide, chlorothiazide, hydrochlorothiazide)
  • triamterene
  • vaptans (e.g. tolvaptan)
  • and other substances with a similar chemical structure or similar biological effect(s) (except drospirenone, pamabrom and topical dorzolamide and brinzolamide, which are not prohibited).

The use In- and Out-of-Competition, as applicable, of any quantity of a substance subject to threshold limits (i.e. formoterol, salbutamol, cathine, ephedrine, methylephedrine and pseudoephedrine) in conjunction with a diuretic or other masking agent requires the deliverance of a specific Therapeutic Use Exemption for that substance in addition to the one granted for the diuretic or other masking agent.

If a Substance or Method is not found, please verify with your Anti-Doping Organization to ensure that this Substance or Method is not prohibited as a related Substance or Method that falls under an existing category.