Sick day rules

Your pharmacist, doctor or nurse can tick your medicines from this list on the ‘Medicine Sick Day
Rules’ card.

Other medicine you take may also result in a more serious illness when you are dehydrated. Your health
professional will discuss these with you and write them on the card.
Which illnesses cause dehydration?
Dehydration is the loss of fluid from your body.
Vomiting, diarrhoea and fever (high temperature, sweats, shaking) can make you dehydrated.
If you are sick once or have diarrhoea once, then you are unlikely to become dehydrated. Having two or
more episodes of vomiting or diarrhoea can lead to dehydration: in these cases, you should follow the
advice in this leaflet.
What actions should I take?
If you develop a dehydrating illness, you should temporarily stop taking any medicine listed here
and any other medicine identified by your health professional. It is very important that you
restart your medicine once you have recovered from the illness. This would normally be after 24 to 48
hours of eating and drinking normally. When you restart your medicine, just take them as normal.
Do not take extra for the doses you have missed.

ACE inhibitors:
a medicine for high blood pressure and heart
conditions. If you are dehydrated, these medicines can stop your kidneys working properly.
Examples: names ending in ‘pril’ such as lisinopril, perindopril, ramipril
ARBs:
a medicine for high blood pressure and heart conditions. If you are dehydrated, these medicines can stop your
kidneys working properly. Examples: names ending in ‘sartan’ such as losartan, candesartan, valsartan
Diuretics: sometimes called ‘water pills’ for excess fluid and high blood pressure.
These medicines can make dehydration more likely.
Examples: furosemide, bendroflumethiazide, indapamide, spironolactone
Metformin: a medicine for diabetes. Dehydration can make it more likely that you will develop
a serious side effect called lactic acidosis.
NSAIDs:
anti-inflammatory pain killers. If you are dehydrated, these medicines can stop your kidneys working properly.
Examples: ibuprofen, naproxen, diclofenac