Medicines & Supplements A to Z > Picoprep


Last updated on 03/08/2021.

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

GENERIC NAME: Citric acid + Magnesium oxide + Sodium picosulfate


DRUG CLASS: Laxatives

SUB CLASS: Stimulant laxatives

USED FOR: Bowel cleansing prior to colonoscopy

– (oral powder)

What is Picoprep for?

Picoprep is a brand of laxative commonly used to prepare the bowels before X-ray examination, bowel examination or surgical procedures.

How to use it?

Picoprep is available as powders which are taken orally to stimulate bowel movement. The powder should be dissolved in one full glass of water (around 250 ml). Drink the solution within 30 minutes. It usually takes 30 minutes to 5 hours to trigger bowel movements.

The first sachet should be taken the evening before the procedure. Approximately 5 hours after the procedure, the second sachet is administered. Food intake in these two days should be limited to clear liquids only.

What are the side effects of Picoprep?

Common side effects of Picoprep include nausea, abdominal fullness, and gastrointestinal discomfort.

Who should not take Picoprep?

– People allergic to any component of the formulation.

Pharmacist Tips:

– 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 Picoprep before medical examinations, you may also need to follow a fasting schedule as suggested by your doctor.

Common dosing schedule:
Take the first sachet in the evening prior to medical procedure. Take the second sachet 5 hours before the procedure.

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

Some common medications Picoprep 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 Picoprep in Hong Kong?

In Hong Kong, Picoprep 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 Picoprep 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.