Cilaxoral (Sodium Picosulfate)
Stimulant laxative for occasional constipation relief
Quick Facts About Cilaxoral
Key Takeaways About Cilaxoral
- Short-term use only: Cilaxoral should not be used for more than one week without consulting a healthcare provider, as prolonged use may cause electrolyte imbalances
- Take in the evening: The drops work within 6–12 hours, so taking them at bedtime produces a bowel movement the following morning
- Safe during breastfeeding: Sodium picosulfate does not pass into breast milk, making Cilaxoral safe for nursing mothers
- Does not affect nutrition: Cilaxoral acts only in the large intestine and does not interfere with nutrient absorption from the small intestine
- Not for children under 12: Unless specifically recommended by a healthcare provider, Cilaxoral should not be given to children under 12 years of age
What Is Cilaxoral and What Is It Used For?
Cilaxoral is an over-the-counter stimulant laxative containing sodium picosulfate (7.5 mg/ml oral drops). It is used for the short-term relief of occasional constipation and to facilitate bowel movements in patients with hemorrhoids or anal fissures where straining should be avoided.
Cilaxoral belongs to a class of medications known as stimulant (or contact) laxatives. The active ingredient, sodium picosulfate, is a prodrug that is converted by bacterial enzymes in the large intestine into its active metabolite, bis-(p-hydroxyphenyl)-pyridyl-2-methane (BHPM). This active form has a dual mechanism of action: it stimulates the smooth muscle of the colonic wall, increasing peristaltic contractions that propel the stool forward, and it simultaneously promotes the accumulation of water and electrolytes in the colonic lumen, resulting in softer and more easily passed stools.
Because sodium picosulfate acts exclusively in the large intestine, it does not interfere with the absorption of nutrients or calories from food in the small intestine. This means that Cilaxoral has no calorie-reducing effect and does not impair overall nutritional status. The drug is available worldwide under various brand names, including Laxoberal, CitraFleet, and Cilaxoral, and has been in clinical use for several decades with a well-established safety profile.
Cilaxoral is indicated for the treatment of occasional (situational) constipation in adults and adolescents aged 12 years and older. It is also commonly recommended to help ease bowel movements in patients suffering from hemorrhoids (piles) or anal fissures, where straining during defecation could worsen symptoms or delay healing. In clinical practice, sodium picosulfate is also sometimes used as part of bowel preparation regimens before colonoscopy or abdominal surgery, often in combination with magnesium citrate (as in the product CitraFleet/Prepopik).
After oral administration, sodium picosulfate passes through the stomach and small intestine unchanged. In the colon, bacterial sulfatase enzymes convert it to the active compound BHPM. This active metabolite stimulates the nerve endings in the colonic wall (myenteric plexus), triggering coordinated muscular contractions that move stool toward the rectum. Simultaneously, BHPM inhibits the reabsorption of water and sodium from the colon, keeping the stool soft. The effect typically occurs 6 to 12 hours after administration.
Conditions treated with Cilaxoral
Cilaxoral is primarily used for the following conditions:
- Occasional constipation: Short-term relief when dietary and lifestyle measures (increased fiber, fluid intake, exercise) have been insufficient
- Hemorrhoids: To soften stools and reduce straining during bowel movements, which can aggravate hemorrhoidal symptoms
- Anal fissures: To facilitate painless defecation and promote healing of tears in the anal lining
- Bowel preparation: In combination products (e.g., with magnesium citrate) for cleansing the bowel before diagnostic or surgical procedures
What Should You Know Before Taking Cilaxoral?
Before taking Cilaxoral, ensure you do not have intestinal obstruction, inflammatory bowel disease, severe abdominal pain with fever, or severe dehydration. Consult a healthcare provider if you need to use laxatives for more than one week. Cilaxoral is not recommended for children under 12 without medical advice.
While Cilaxoral is available without a prescription and is generally well tolerated, there are important precautions to consider before starting treatment. As with any medication, certain conditions may make Cilaxoral unsuitable or require special medical supervision. Understanding these precautions helps ensure safe and effective use of the product.
Contraindications
You should not use Cilaxoral if you have any of the following conditions:
- Allergy to sodium picosulfate or any of the other ingredients in the formulation (sodium benzoate, sorbitol, sodium citrate, citric acid monohydrate, purified water)
- Intestinal obstruction (ileus) or suspected bowel blockage
- Inflammatory bowel disease such as Crohn's disease or ulcerative colitis in an active flare
- Severe abdominal pain accompanied by fever, nausea, or vomiting, which could indicate a surgical condition such as appendicitis
- Severe dehydration (significant fluid depletion)
Stop taking Cilaxoral and contact a healthcare provider immediately if you experience any of the following signs of angioedema: swelling of the face, tongue, or throat; difficulty swallowing; hives combined with breathing difficulties. These symptoms may indicate a serious allergic reaction requiring urgent medical attention.
Warnings and Precautions
Several important precautions should be observed when using Cilaxoral:
- Duration of use: If laxatives are needed regularly for more than one week, consult a healthcare provider. Prolonged and excessive use of stimulant laxatives can lead to fluid and electrolyte disturbances, particularly potassium depletion (hypokalemia), which can affect heart rhythm and muscle function.
- Dizziness and fainting: Some patients have reported dizziness and syncope (fainting) while using Cilaxoral. This is most likely caused by a vasovagal response during straining at stool or as a consequence of abdominal cramping associated with constipation, rather than a direct drug effect.
- Chronic constipation: Cilaxoral is intended for occasional use. Chronic or persistent constipation should be evaluated by a healthcare provider to rule out underlying conditions such as hypothyroidism, diabetes, neurological disorders, or colorectal pathology.
- Sorbitol content: Cilaxoral oral drops contain 650 mg of sorbitol per ml. Patients with hereditary fructose intolerance should not use this product, as sorbitol is a source of fructose.
- Sodium content: The product contains less than 1 mmol (23 mg) sodium per ml and is considered essentially sodium-free.
Pregnancy and Breastfeeding
The safety of Cilaxoral during pregnancy and breastfeeding is an important consideration for many patients:
Pregnancy: There are no adequate and well-controlled studies of sodium picosulfate in pregnant women. However, extensive clinical experience over several decades has not revealed any evidence of harmful or teratogenic effects during pregnancy. The European Medicines Agency (EMA) and the British National Formulary (BNF) classify sodium picosulfate as acceptable for short-term use in pregnancy when non-pharmacological measures have failed. Nevertheless, as with all medications during pregnancy, Cilaxoral should be used only when clearly needed and preferably under medical supervision. First-line approaches for constipation in pregnancy include increased dietary fiber, adequate fluid intake, and regular physical activity.
Breastfeeding: Pharmacokinetic studies have demonstrated that sodium picosulfate and its active metabolite do not pass into breast milk. Therefore, Cilaxoral can be used safely during breastfeeding without risk to the nursing infant. This makes it a preferred choice among stimulant laxatives for breastfeeding mothers experiencing constipation.
Children and adolescents
Cilaxoral should not be given to children under 12 years of age without a specific recommendation from a healthcare provider. In pediatric patients, constipation should first be managed with dietary modifications (increased fiber and fluid intake), behavioral strategies (regular toileting routines), and, if necessary, osmotic laxatives such as macrogol (polyethylene glycol) or lactulose, which are generally preferred in children due to their gentler mechanism of action.
Driving and operating machinery
Dizziness and fainting episodes have been reported in association with Cilaxoral use, most likely due to a vasovagal response during straining at stool or as a result of abdominal discomfort. Patients who experience abdominal cramping or discomfort should exercise caution when driving or operating machinery. Assess your own ability to perform these activities safely before engaging in them.
How Does Cilaxoral Interact with Other Drugs?
Cilaxoral may interact with diuretics, corticosteroids (increasing risk of potassium depletion), and antibiotics (which can reduce the laxative effect by disrupting colonic bacteria). Cardiac glycosides such as digoxin may have enhanced effects if potassium levels drop due to laxative overuse.
Drug interactions with Cilaxoral are generally limited because sodium picosulfate acts locally in the colon and has minimal systemic absorption. However, several clinically relevant interactions should be considered, particularly with medications that affect electrolyte balance or rely on the colonic bacterial flora for their own metabolism.
Major Interactions
The following interactions may require dose adjustment or additional monitoring:
| Interacting Drug | Effect | Clinical Significance | Recommendation |
|---|---|---|---|
| Diuretics (furosemide, hydrochlorothiazide) | Increased risk of electrolyte imbalance, especially hypokalemia | High – may cause cardiac arrhythmias and muscle weakness | Monitor potassium levels; avoid prolonged laxative use |
| Corticosteroids (prednisolone, dexamethasone) | Additive potassium depletion, especially at high doses | Moderate to high – increased risk of hypokalemia | Monitor electrolytes regularly during concurrent use |
| Cardiac glycosides (digoxin) | Hypokalemia from laxative overuse potentiates digoxin toxicity | High – risk of serious cardiac adverse effects | Monitor digoxin levels and potassium; limit laxative duration |
Minor Interactions
The following interactions are generally of lower clinical significance but should be noted:
| Interacting Drug | Effect | Recommendation |
|---|---|---|
| Broad-spectrum antibiotics | May reduce the laxative effect by disrupting colonic bacterial flora needed to convert sodium picosulfate to its active form | Consider alternative laxative if concurrent antibiotic use is prolonged |
| Other laxatives | Additive laxative effect; increased risk of diarrhea and dehydration | Avoid combining multiple laxatives unless directed by a healthcare provider |
| NSAIDs (ibuprofen, naproxen) | Theoretical increased risk of GI irritation with prolonged concurrent use | Use with caution; report any GI symptoms |
Cilaxoral oral drops can be mixed with food or drink for easier administration. There are no known food interactions that affect the efficacy or safety of the medication. However, maintaining adequate fluid intake while using any laxative is important to prevent dehydration. Drinking at least 6–8 glasses of water daily is recommended during treatment.
What Is the Correct Dosage of Cilaxoral?
The recommended adult dose of Cilaxoral is 10–20 drops (5–10 mg sodium picosulfate) once daily, taken in the evening. Start with 10 drops and adjust as needed. Do not exceed 20 drops per day. Take for no more than one week without medical advice.
Correct dosing of Cilaxoral is essential for achieving effective relief from constipation while minimizing the risk of adverse effects. The drops should be taken in the evening before bedtime, as the laxative effect typically occurs 6 to 12 hours later, resulting in a bowel movement the following morning. Each 10 drops of Cilaxoral oral solution contains 5 mg of sodium picosulfate.
Adults (12 years and older)
Standard Dosing
Starting dose: 10 drops (5 mg sodium picosulfate) once daily in the evening
Dose range: 10–20 drops (5–10 mg) once daily
Maximum dose: 20 drops (10 mg) per day
Administration: Can be taken directly or mixed with food or drink
Begin with 10 drops in the evening. The dose can then be decreased or increased within the 10–20 drop range to achieve a comfortable stool consistency. Do not exceed 20 drops in a 24-hour period. After a successful bowel movement, it is normal for the next bowel movement to take longer than usual to occur — this is because the colon has been thoroughly emptied.
Recommended Tapering Schedule
For over-the-counter use, daily treatment with Cilaxoral is recommended for no more than one week. After this initial period, the following tapering schedule can help prevent rebound constipation and laxative dependence:
| Week | Frequency | Notes |
|---|---|---|
| Week 1 | Daily (once per evening) | Start with 10 drops; adjust to 10–20 drops as needed |
| Week 2 | Every other day | Maintain effective dose from Week 1 |
| Week 3 | Every third day | Continue reducing frequency |
| Week 4 | Discontinue | Stop treatment; maintain dietary and lifestyle changes |
Your healthcare provider may recommend a different dosing schedule or treatment duration depending on your individual circumstances. Patients with chronic or recurrent constipation should receive a comprehensive evaluation to identify and address underlying causes.
Children
Cilaxoral should not be given to children under 12 years of age without the recommendation of a healthcare provider. The safety and efficacy of sodium picosulfate in younger children have not been adequately established in controlled clinical trials. Pediatric constipation is best managed by a healthcare provider who can recommend age-appropriate treatments. First-line options for childhood constipation typically include osmotic laxatives (e.g., macrogol/polyethylene glycol), dietary modifications, and behavioral interventions.
Elderly Patients
No specific dose adjustment is required for elderly patients. However, older adults may be more susceptible to fluid and electrolyte disturbances, particularly if they are also taking diuretics, cardiac glycosides, or corticosteroids. The lowest effective dose should be used, and prolonged treatment should be avoided. Adequate fluid intake is especially important in elderly patients to prevent dehydration during laxative use.
Missed Dose
If you forget to take a dose of Cilaxoral, simply take it as soon as you remember. If it is close to the time for your next scheduled dose, skip the missed dose and continue with your regular dosing schedule. Do not take a double dose to make up for a missed one. Since Cilaxoral is used on an as-needed basis for constipation, missing a single dose is unlikely to have clinical significance.
Overdose
If you have taken too much Cilaxoral, or if a child has accidentally ingested the medication, contact a healthcare provider, go to the nearest emergency department, or call your local poison control center immediately for risk assessment and guidance.
Overdose with Cilaxoral may cause severe diarrhea, abdominal cramps, and clinically significant loss of fluid and electrolytes. Acute overdose should be managed with supportive care, including fluid replacement and correction of electrolyte imbalances. Chronic overuse of stimulant laxatives can lead to persistent diarrhea, abdominal pain, hypokalemia, secondary hyperaldosteronism, and, in rare cases, renal calculi (kidney stones). If chronic misuse is suspected, a healthcare provider should be consulted for a comprehensive evaluation and treatment plan.
How to use the dropper bottle
To dispense the oral drops correctly, invert the bottle (turn it upside down) and gently tap the bottom to release the first drop. Count the drops carefully as they fall. The drops can be taken directly into the mouth or mixed with a small amount of water, juice, or food. Replace the cap tightly after each use.
What Are the Side Effects of Cilaxoral?
The most common side effect of Cilaxoral is diarrhea (occurring in more than 1 in 10 users). Common side effects include abdominal cramps, stomach pain, and gastrointestinal discomfort. Uncommon side effects include dizziness, nausea, and vomiting. Allergic reactions are rare but can occur.
Like all medications, Cilaxoral can cause side effects, although not everyone experiences them. Most side effects of sodium picosulfate are related to its mechanism of action in the gastrointestinal tract and are dose-dependent. By starting with the lowest effective dose and not exceeding the recommended maximum, you can minimize the likelihood and severity of adverse effects.
Side effects are classified below according to their frequency of occurrence, based on post-marketing surveillance data and clinical trials:
Very Common
- Diarrhea (the expected pharmacological effect when the dose is too high)
Common
- Abdominal cramps
- Abdominal pain
- Gastrointestinal discomfort
Uncommon
- Dizziness
- Nausea
- Vomiting
Rare / Frequency Not Known
- Hypersensitivity reactions
- Skin rash, itching (pruritus)
- Angioedema (swelling of the face, tongue, lips, or throat)
- Syncope (fainting)
Managing common side effects
Most side effects of Cilaxoral are mild, transient, and directly related to the dose taken. The following strategies can help manage common adverse effects:
- Diarrhea: Reduce the dose. If you are taking 20 drops, try reducing to 15 or 10 drops. Ensure adequate fluid intake to replace lost water and electrolytes.
- Abdominal cramps: Starting with a lower dose (10 drops) and gradually increasing may help prevent cramping. Taking the drops with a small amount of food or warm water may also reduce discomfort.
- Dizziness: This is more likely related to straining during bowel movements or abdominal discomfort than a direct drug effect. Sit down if you feel dizzy and avoid sudden movements.
Reporting suspected adverse reactions after a medicine has been authorized is important for ongoing safety monitoring. Healthcare professionals and patients are encouraged to report any suspected side effects to their national pharmacovigilance authority (e.g., the EMA in Europe, the FDA MedWatch program in the United States, or the MHRA Yellow Card Scheme in the United Kingdom).
How Should You Store Cilaxoral?
Store Cilaxoral out of the sight and reach of children. Use before the expiration date on the packaging. Once opened, the dropper bottle should be used within 6 months. Do not dispose of medications via the drain or in household waste.
Proper storage of Cilaxoral is important to maintain the effectiveness and safety of the medication throughout its shelf life. The following storage guidelines should be followed:
- Keep out of sight and reach of children — store in a location that is not accessible to young children to prevent accidental ingestion
- Expiration date — do not use Cilaxoral after the expiration date printed on the carton. The expiration date refers to the last day of the indicated month
- Shelf life after opening — once the dropper bottle has been opened, the solution should be used within 6 months. Write the date of opening on the carton to help you keep track
- Storage conditions — store at room temperature. No special temperature precautions are required for this product
- Disposal — do not throw away unused or expired medication via the drain or in household waste. Return unused medicines to your local pharmacy for safe disposal. This protects the environment and prevents accidental exposure
The oral drops solution is a colorless to slightly yellowish-brown liquid. If the solution has changed significantly in color or appearance, or if the dropper mechanism is damaged, do not use the product and consult your pharmacist.
What Does Cilaxoral Contain?
Cilaxoral oral drops contain 7.5 mg/ml of sodium picosulfate as the active ingredient. Inactive ingredients include sodium benzoate (E211), sorbitol 70% (E420), sodium citrate, citric acid monohydrate, and purified water. The solution has a neutral taste.
Understanding the full composition of your medication is important, particularly if you have known allergies or intolerances to specific ingredients. Below is a complete breakdown of the ingredients in Cilaxoral oral drops:
Active ingredient
Each milliliter (ml) of Cilaxoral oral drops contains 7.5 mg sodium picosulfate (also known as sodium 4,4'-(pyridin-2-ylmethylene)bis(phenyl sulfate)). Sodium picosulfate is a triarylmethane compound that functions as a prodrug, requiring activation by colonic bacterial enzymes to exert its laxative effect.
Inactive ingredients (excipients)
- Sodium benzoate (E211) — preservative
- Sorbitol 70% (E420) — sweetening agent. Important: patients with hereditary fructose intolerance should not use this product, as sorbitol is a source of fructose. The product contains 650 mg sorbitol per ml
- Sodium citrate — buffering agent
- Citric acid monohydrate — pH adjuster
- Purified water — solvent
The product has a neutral taste and is supplied in a 30 ml dropper bottle. The solution is colorless to slightly yellowish-brown in appearance. The sodium content is less than 1 mmol (23 mg) per ml, making it essentially sodium-free — an important consideration for patients on sodium-restricted diets.
What Happens When You Stop Taking Cilaxoral?
After Cilaxoral produces a bowel movement, the colon is thoroughly emptied. It is normal for the next bowel movement to take several days to occur. This is not a sign of worsening constipation but simply reflects the time needed for the colon to refill.
An important aspect of using Cilaxoral that many patients find concerning is the delay in bowel movements after discontinuation. When Cilaxoral produces a bowel movement, it effectively empties the entire large intestine. As a result, it can take 2 to 3 days (or sometimes longer) before sufficient stool has accumulated in the colon to trigger the next natural bowel movement. This should not be misinterpreted as a return of constipation or a need to resume laxative use.
To maintain regular bowel function after stopping Cilaxoral, the following measures are recommended:
- Increase dietary fiber — aim for 25–30 grams per day from sources such as whole grains, fruits, vegetables, and legumes
- Stay well hydrated — drink at least 1.5–2 liters of water daily
- Regular physical activity — even moderate exercise such as walking for 30 minutes daily can stimulate bowel motility
- Establish a regular routine — try to have a bowel movement at the same time each day, ideally after a meal when the gastrocolic reflex is strongest
- Do not ignore the urge — delaying bowel movements when you feel the urge can worsen constipation over time
If constipation persists or recurs frequently despite these lifestyle measures, consult a healthcare provider. Chronic constipation may require further investigation to rule out underlying medical conditions and may benefit from different treatment approaches, including osmotic laxatives, bulk-forming agents, or prescription medications such as prucalopride or linaclotide.
Frequently Asked Questions About Cilaxoral
References
This article is based on the following evidence-based sources and international medical guidelines:
- European Medicines Agency (EMA). Sodium picosulfate – Summary of Product Characteristics. Available at: www.ema.europa.eu
- British National Formulary (BNF). Sodium picosulfate monograph. National Institute for Health and Care Excellence (NICE). Available at: bnf.nice.org.uk
- World Health Organization (WHO). WHO Model Formulary 2023. Geneva: World Health Organization.
- American College of Gastroenterology (ACG). Bharucha AE, et al. American Gastroenterological Association Medical Position Statement on Constipation. Gastroenterology. 2013;144(1):211–217. doi:10.1053/j.gastro.2012.10.029
- Kamm MA, Mueller-Lissner S, Wald A, et al. Oral bisacodyl is effective and well-tolerated in patients with chronic constipation. Clin Gastroenterol Hepatol. 2011;9(7):577–583. doi:10.1016/j.cgh.2011.03.026
- Mueller-Lissner S, Kamm MA, Wald A, et al. Multicenter, 4-week, double-blind, randomized, placebo-controlled trial of sodium picosulfate in patients with chronic constipation. Am J Gastroenterol. 2010;105(4):897–903. doi:10.1038/ajg.2010.41
- Ford AC, Suares NC. Effect of laxatives and pharmacological therapies in chronic idiopathic constipation: systematic review and meta-analysis. Gut. 2011;60(2):209–218. doi:10.1136/gut.2010.227132
- National Institute for Health and Care Excellence (NICE). Constipation in adults: diagnosis and management. Clinical guideline [CG171]. 2023.
- World Gastroenterology Organisation (WGO). Global Guidelines: Constipation. 2023. Available at: www.worldgastroenterology.org
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