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Fleet Enema

Last updated on 03/08/2021.

Overview   |   Dosage   |    Side Effects   |   Precautions  |   Tips  |   Where To Buy  

GENERIC NAME: Sodium biphosphate + Sodium phosphate


DRUG CLASS: Laxatives

SUB CLASS: Stimulant laxatives

USED FOR: Constipation, Bowel cleansing prior to colonoscopy


What is Fleet Enema for?

Fleet Enema is a brand of laxative used for constipation or to prepare the bowels before colonoscopy or other bowel procedures.

How to use it?

Fleet Enema is administered into the rectum to stimulate bowel movement. Shake well before opening the protective shield. If you are right-handed, lie on your left side and pull your right knee up to your chest. Lie on your right side if you are left-handed. Gently insert the tip into the rectum with slight side to side movement. Squeeze the bottle until almost all liquid is expelled. Remain lying in this position for a couple of minutes before sitting or standing. Gently remove the unit and a small amount of liquid will remain in the container. Discard the container after use. You may feel the urge to go to the toilet within 1 to 5 minutes.

What are the side effects of Fleet Enema?

Common side effects of Fleet Enema include dehydration, burning sensation or discomfort in anus or rectum.

Who should not take Fleet Enema?

People allergic to any component of the formulation.

Pharmacist Tips:

– Drink more water, increase fiber intake and exercise regularly to ensure soft bowel movement and reduce straining.
– If you find dark-colour blood in your stool, along with abdominal pain, vomiting, or diarrhoea, please seek medical attention immediately.
– If you are using Fleet Enema before medical examinations, you may also need to follow a fasting schedule as suggested by your doctor.

Common dosing schedule:
Use no more than 1 bottle in 24 hours.

This schedule is for reference only, adjustments may be made according to individual needs.

Some common medications Fleet Enema may interact with:
– Diuretics, e.g. Furosemide, Hydrochlorothiazide
– Other laxatives, e.g. Glycerol, Senna, Bisacodyl

Please notify your doctor or pharmacist if you are taking the above medication, dosage adjustments might be needed.

Where to buy Fleet Enema in Hong Kong?

In Hong Kong, Fleet Enema is an over-the-counter medicine and can be purchased without a prescription from any retail outlet in Hong Kong. This includes grocery stores, convenience stores, medicine shops, and pharmacies. It can also be obtained from doctors. To find a pharmacy near you, refer to the list of pharmacies (“Authorized Sellers of Poisons”) from the Hong Kong Department of Health.

For more information about drug names and ingredients, you can visit Hong Kong’s Drug Office at

Need more information?

For detailed information about the use of Fleet Enema in children, pregnancy and breastfeeding, and for questions about drug interactions, please check with your pharmacist or doctor.

Disclaimer: our goal is to provide you with the most relevant drug information and common dosage for Hong Kong. This information does not constitute medical advice. For specific treatment recommendations and advice, always discuss with your doctor or pharmacist, and follow the instructions included with your specific medicine.