Diuretics - Whole blood and components

Also known as: water tablets

Essential information

Obligatory

Must not donate if:

  1. Taken for heart failure
  2. Taken for kidney failure
Discretionary
  1. If taken for pre-menstrual syndrome, accept.
  2. If taken to treat hypertension as either the only drug or with other anti-hypertensive medication, accept.

Supporting information

See if relevant
Additional information

Diuretics (water tablets) are used for many different reasons. If they are taken for a serious condition (e.g. heart or kidney failure), the donor should not be accepted.

Reason for change:
Update of ‘See if relevant’ links due to the replacement of the ‘Kidney and bladder disease’ entry with separate entries for individual topics.
Version details:

WB-DSG Edition 203 Release 81 (11 August 2026)