Patient Leaflet Updated 20-May-2026 | SyriMed
Potassium Chloride 7.5% w/v Syrup
Potassium Chloride 7.5% w/v Syrup
Read all of this leaflet carefully before you start taking this medicine because it contains important information for you. Always take this medicine exactly as described in this leaflet or as your doctor, pharmacist or nurse have told you.
1. What Potassium Chloride 7.5% w/v Syrup is and what it is used for
2. What you need to know before you take Potassium Chloride 7.5% w/v Syrup
3. How to take Potassium Chloride 7.5% w/v Syrup
4. Possible side effects
5. How to store Potassium Chloride 7.5% w/v Syrup
6. Contents of the pack and other information
The name of your medicine is Potassium Chloride 7.5% w/v SyrupPotassium Chloride 7.5% w/v Syrup. In this leaflet your medicine will be referred to as Potassium Chloride 7.5% w/v Syrup.
Potassium Chloride 7.5% w/v Syrup contains a medicine called potassium chloride and is a potassium supplement. Potassium chloride is a type of salt which your body needs to be healthy.
Potassium Chloride 7.5% w/v Syrup is used to treat or to stop low levels of potassium in you body. If the level of potassium in your body is low, you will feel unwell.
Potassium Chloride 7.5% w/v Syrup works by increasing the store of potassium in you body to the right levels.
Do not take Potassium Chloride 7.5% w/v Syrup if any of the above apply to you. If you are not sure, talk to your doctor, pharmacist or nurse before taking Potassium Chloride 7.5% w/v Syrup.
Talk to your doctor, pharmacist or nurse before taking Potassium Chloride 7.5% w/v Syrup if:
This medicine contains 1mmol potassium per ml. This should be taken into consideration if you have reduced kidney function or on a controlled potassium diet.
If any of the above apply to you (or you are not sure), talk to your doctor, pharmacist or nurse before taking Potassium Chloride 7.5% w/v Syrup.
Periodic blood tests and electrocardiograph (ECG) should be performed while you are taking Potassium Chloride 7.5% w/v Syrup.
Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines. Some medicines can affect the levels of potassium in your blood stream. These include ACE inhibitors (such as enalapril), aldosterone antagonists (such as spironolactone), angiotensin II receptor antagonists (such as losartan), ciclosporin, potassium sparing diuretics (such as amiloride) and tacrolimus. The risk of developing high levels of potassium in your blood stream is increased if you are taking potassium supplements and a medicine called digoxin (particularly if you take too much digoxin) or if you have kidney problems.
If you are taking any of these medicines (or you are not sure) talk to your doctor, pharmacist or nurse before taking Potassium Chloride 7.5% w/v Syrup.
Do not take this medicine if you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby unless your doctor advises it is essential.
Potassium Chloride 7.5% w/v Syrup is not likely to affect you being able to drive or use tools or machines. However, if you feel unwell do not drive or use any tools or machines.
Potassium Chloride 7.5% w/v Syrup contains less than 1 mmol sodium (23 mg) per dose. This means that it is essentially ‘sodium free’
This medicine contains 400 mg sorbitol in each ml of syrup.
Sorbitol is a source of fructose. If your doctor has told you that you (or your child) have an intolerance to some sugars or if you have been diagnosed with hereditary fructose intolerance (HFI), a rare genetic disorder in which a person cannot break down fructose, talk to your doctor before you (or your child) take or receive this medicine. Sorbitol may cause gastrointestinal discomfort and mild laxative effect. This medicine contains carmoisine (E122) which may cause allergic reactions. This medicine contains methyl parahydroxybenzoate (E218), ethyl parahydroxybenzoate (E214) and propyl parahydroxybenzoate (E216) which may cause allergic reactions (possibly delayed).
This medicine contains 1 mg benzoate salt in each ml of syrup. Benzoate salt may increase jaundice (yellowing of the skin and eyes) in newborn babies (up to 4 weeks old).
This medicine contains 10 mg propylene glycol in each ml of syrup.
If your baby is less than 4 weeks old, talk to your doctor or pharmacist before giving them this medicine, in particular if the baby is given other medicines that contain propylene glycol or alcohol.
A doctor or nurse may give you this medicine or you may take it yourself. Always take this medicine exactly as described in this leaflet or as your doctor, pharmacist or nurse have told you. Check with your doctor, pharmacist or nurse if you are not sure.
Your doctor will decide how much medicine you should take and for how long you should take it.
This will depend on a number of things such as:
Adults, the elderly (over 65 years) and children aged 12 years and over
Use in babies (up to 1 year of age), infants and children (age 1 to 12 years)
Spread this out during the day as instructed by your doctor. Use the syringe or spoon supplied by your pharmacist to help you give the right dose.
If you or someone else takes more Potassium Chloride 7.5% w/v Syrup than you should, talk to a doctor or nurse or go to a hospital straight away. Take the medicine pack with you. You may:
If you forget a dose, do not worry. Do not take a double dose to make up for a forgotten dose. Take your next dose as usual.
Talk to your doctor before you stop taking Potassium Chloride 7.5% w/v Syrup. If you stop taking Potassium Chloride 7.5% w/v Syrup before you have finished your course of treatment, your symptoms may return.
If you have any further questions on the use of this medicine, ask your doctor, pharmacist or nurse.
Like all medicines, this medicine can cause side effects, although not everybody gets them.
If these side effects trouble you, your doctor may lower your dose or tell you to stop taking Potassium Chloride 7.5% w/v Syrup.
If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects directly (see below). By reporting side effects you can help provide more information on the safety of this medicine.
United Kingdom
or search for MHRA Yellow Card in the Google Play or Apple App Store
Keep this medicine out of the sight and reach of children.
Do not use this medicine after the expiry date which is stated on the carton and the label on the glass bottle after EXP. The expiry date refers to the last day of that month.
Store below 25°C.
Do not use Potassium Chloride 7.5% w/v Syrup if the appearance of the medicine has changed in any way.
Do not use this medicine after 8 weeks of first opening.
Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.
Potassium Chloride 7.5% w/v Syrup contains 7.5% w/v potassium chloride as the active ingredient, equivalent to 1 mmol of potassium per ml.
Potassium Chloride 7.5% w/v Syrup is a clear, red, slightly sticky and thick liquid which comes in 150ml or 500ml bottle.
PL 39307/0145
This leaflet was last revised in February 2026.
VAR/IB-004
Unit 4, Bradfield Road, Ruislip, Middlesex, HA4 0NU
0330 1359 422
+44 (0)208 515 3700
https://syrimed.uk/
+44 (0)208 515 3700
+44 (0)208 515 3700