Регулакс

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Регулакс

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Treatment option: Constipation

Medically reviewed

Laura Arias

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Регулакс

Property Description
Active ingredient Sennosides (including Sennoside A and B)
Form Oral tablets, Chewable tablets, Oral liquid preparations
Pharmacological class Stimulant Laxative (Anthraquinone Derivative)
Common use Relief of temporary bowel sluggishness
Origin Natural (derived from the Senna plant)

What Type of Medicine is Регулакс (Sennoside A)?

Регулакс is a Laxative Preparation primarily classified as a Stimulant Laxative, a type of medication used for the relief of temporary difficulties in passing stool. This product belongs to the Anthraquinone Derivative group, which is a subtype of Contact Laxatives, and its function is to actively stimulate bowel activity, placing it in a category distinct from agents that only increase stool bulk. The primary utility of the preparation is to promote a bowel movement and re-establish regularity when the natural muscle contractions of the colon, known as peristalsis, have temporarily slowed. The active ingredient, Senna, is recognized for its role in treating constipation.

Composition and Natural Origin of Sennosides

The therapeutic effect of Регулакс is specifically linked to its active ingredient, Sennosides (Sennoside A and Sennoside B), which are naturally sourced from the leaves and fruit of the Senna plant (Cassia acutifolia or Cassia angustifolia). This botanical origin makes it an Herbal Laxative. It is administered via the oral route in several distinct dosage forms, including standard tablets, chewable formulations, and concentrated oral liquid preparations, offering flexibility to the user. Sennosides are used for improving intestinal transit time when necessary.

The Essential Action: Contact Stimulation and Peristalsis

The fundamental action of this product is direct contact stimulation of the large intestine's inner wall. This occurs after Sennosides are metabolized by colonic bacteria into the active substance Rheinanthrone, which triggers a localized response in the nerve and muscle tissue. The overall purpose of this stimulant mechanism is to accelerate the passage of contents and facilitate timely, complete bowel evacuation.

Regulatory References

  1. WHO Essential Medicines List

What side effects are possible with Регулакс?

The official safety profile for the active ingredient, Sennosides, is structured by government regulatory agencies to classify and communicate the possible reactions observed in clinical use. Adverse reactions are grouped by the specific body systems they affect, though the frequency for most events is formally classified as Not known in regulatory documents, meaning it cannot be estimated from available data.

Officially Documented Adverse Reactions

The most frequently reported effects, often classified under Gastrointestinal Disorders, include abdominal pain, abdominal spasm (griping), and diarrhoea (passage of liquid stools). Reactions affecting the Immune System and Skin (e.g., pruritus, urticaria, exanthema) have also been documented. A common but clinically insignificant finding is Chromaturia, a yellow or red-brown discoloration of urine.

Safety Patterns and Serious Consequences

Official labeling explicitly links certain safety consequences to chronic or prolonged use of the medication. Such long-term exposure may lead to Metabolism and Nutrition Disorders, including severe fluid and electrolyte imbalance and hypokalaemia (low potassium levels). This imbalance is the basis for the most serious documented risks, which can potentially lead to secondary cardiac disorders or muscular weakness. Chronic misuse can also result in pigmentation of the intestinal mucosa (pseudomelanosis coli) and, rarely, an atonic colon.

Regulatory Restrictions

The product should not be used in individuals with pre-existing severe conditions, including intestinal obstruction, inflammatory bowel diseases, severe dehydration, or abdominal pain of unknown origin. Safety considerations also apply to patients with kidney disorders due to the potential for electrolyte disturbances.

Overdose and Emergency Response

Overdose and When to Seek Help

Official regulatory documents strictly mandate that immediate medical attention must be sought or a Poison Control Center must be contacted right away in the event of a known or suspected overdose of Sennosides. This directive applies to both adults and children, even if physical symptoms are not yet noticeable.

Documented Manifestations and Serious Outcomes

An acute overdose is officially characterized by severe diarrhoea, abdominal griping pain, and subsequent excessive loss of fluid and electrolytes. This fluid loss can lead to disorders in water equilibrium and critical hypokalaemia (potassium depletion).

Regulatory warnings indicate that hypokalaemia carries a risk for serious complications, including potential cardiac disorders and muscular asthenia. Furthermore, chronic, prolonged excessive use is associated with potential systemic risks, such as toxic hepatitis and the development of an atonic, non-functioning colon.

Emergency Management and Monitoring

Management of an overdose is primarily supportive, as no specific antidote is documented in official labeling. Treatment procedures documented by regulators include the administration of generous amounts of fluid. Continuous monitoring of electrolyte levels, particularly potassium, is required, with official guidance noting that this monitoring is especially important for the elderly population.

Therapeutic Uses of Регулакс

What Регулакс Treats: Main Uses and Benefits

Регулакс is commonly used to provide symptomatic relief in situations involving temporary and sporadic constipation, which are conditions characterized by symptoms related to physical discomfort. This medication is applied across domains where short-term symptomatic assistance is needed. The main therapeutic goal is to address symptom clusters that may appear suddenly and interfere with daily comfort, namely infrequent stool passage, difficult evacuation, and associated feelings of sluggishness or fullness.

This medication is also relevant in clinical settings requiring supportive symptom management, for instance, when counteracting constipation caused by necessary medications or when used for pre-procedural bowel clearance. It provides support that helps ease the overall symptom burden and contributes to easing discomfort during periods of heightened symptoms.

“This medication is applied in situations where patients experience episodes of acute irregularity and require temporary assistance in symptom stabilization.”

Quick Fact: Relief for Episodic Irregularity Регулакс is generally relevant for easing symptoms associated with acute or episodic changes in bowel function, supporting patients during difficult episodes by easing distress and assisting with maintaining a sense of stability.

Regulatory References

  1. NIH MedlinePlus Drug Information

Eligibility and Restrictions for Use

Who Can and Cannot Use Регулакс? (Sennosides)

The official eligibility profile for Регулакс is strictly defined by regulatory authorities to govern authorized use and absolute prohibitions, focusing on patient age and pre-existing medical conditions.

Contraindicated Populations (Use is Prohibited)

Use of sennosides is absolutely prohibited in individuals with severe acute gastrointestinal conditions, including:

  • Intestinal obstruction (blockage) or narrowing (stenosis)
  • Acute inflammatory bowel diseases (such as Crohn’s disease or ulcerative colitis)
  • Appendicitis or any condition presenting as an acute surgical abdomen
  • Severe dehydration with water and electrolyte depletion
  • Abdominal pain of unknown origin.

Age-Related Eligibility Rules

The medicine is generally permitted for short-term use in adults and adolescents 12 years of age and over. Use in children 6 to under 12 years is permitted but requires adherence to the lower pediatric dosing established in Over-the-Counter (OTC) labeling. Use in children under 2 years of age must be determined by a doctor.

Conditional Use and Restrictions

Regulatory labeling requires consultation with a health professional before use in the following populations:

  • Pregnancy and Lactation: Use is generally not recommended; pregnant or breastfeeding women must seek medical advice before use.
  • Duration: Use must not exceed one week unless explicitly advised by a doctor.
  • Pre-Existing Symptoms: Individuals experiencing nausea, vomiting, or stomach pain before taking the medication must consult a doctor.

What should I know about interactions with other medicines?

The interaction profile for Регулакс (Sennosides) is primarily based on its ability to alter electrolytes and accelerate gastrointestinal transit time, according to regulatory documentation.

Pharmacodynamic and Electrolyte Risk

Co-administration with other medicines that deplete potassium is associated with a pharmacodynamic additive effect, which increases the risk of hypokalaemia (low potassium). This includes diuretic drugs (e.g., thiazides) and corticosteroids. The resulting hypokalaemia is documented to increase the patient's sensitivity and toxicity risk from cardiac glycosides like Digoxin.

Exposure Modification and Administration Timing

The acceleration of intestinal transit is a factor in exposure-modifying interactions. This effect can reduce the absorption and subsequent efficacy of co-administered oral medications. To mitigate this risk, official labeling mandates a timing separation rule: Регулакс must be administered at least 2 or more hours before or after other oral medicines. Additionally, the laxative effect may decrease the therapeutic efficacy of Estrogen products and can potentiate the anticoagulant effects of Warfarin.

Administration Restriction

A specific restriction in official documents prohibits the co-administration of Sennosides with Mineral Oil. This combination is formally classified as a contraindicated risk.

Mechanism of Action

How Регулакс Works

The mechanism of action begins with a mandatory bioactivation step. The parent molecule, Sennosides, is biologically inert and requires conversion into the active metabolite, Rheinanthrone. This transformation is exclusively catalyzed by beta-glucosidase and reductase enzymes produced by the colonic microflora in the large intestine. This necessary metabolic lag determines the drug's characteristic delay in physiological effect.

Once activated, Rheinanthrone initiates a coordinated dual-action mechanism on the colon wall. First, it actively modulates water dynamics by reducing water reabsorption. This occurs primarily through the downregulation of Aquaporin 3 (AQP3) water channels and the promotion of electrolyte secretion via Prostaglandin E2 synthesis. This results in an increase in the luminal fluid volume.

Second, the active metabolite acts as a direct contact stimulant to the enteric neurons and smooth muscle. This action intensifies and increases the frequency of propulsive contractions (peristalsis). The resultant physiological change involves the combined effect of altered water content and accelerated propulsive contractions.

Dosage and Administration Information

The administration of Регулакс (Sennosides) is governed by instructions that define its short-term, oral usage protocol. The medicine is available in several dosage forms, including oral tablets and liquid solutions, and must always be administered via the oral route. The specific time of day for administration is a critical element of its usage schedule, as guidelines advise taking the dose at bedtime to ensure the desired effect occurs within the 6 to 12 hour timeframe, allowing for overnight action.

Dosing regimens differ by region and formulation strength. The starting dose for adults typically falls within the range of 7.5 mg to 17.2 mg sennosides once daily. A core principle is the necessity of titrating to the lowest effective dose required to achieve a comfortable bowel movement, rather than the highest permitted dose. Maximum daily doses are dependent on the product label, with limits varying by jurisdiction.

Administration Requirements

The course of treatment is defined as short-term use only. Instructions uniformly constrain the medication's use to a maximum duration of seven consecutive days. Procedurally, tablets must be swallowed whole and should not be crushed or chewed, and users are instructed to separate the intake of this medication by two or more hours from other oral drugs to avoid compromising their absorption. Age-specific rules also vary; while some guidelines permit use in children as young as six with specific dosing, other product labeling restricts use to individuals 18 years of age and older.

Recent Clinical Evidence

Research evidence / Overview of studies for Регулакс

Evidence for Relief of Occasional Bowel Irregularity

Research exploring the use of Sennosides for temporary difficulties in passing stool includes numerous evaluations of Well-Established Medicinal Use by regulatory authorities, alongside short-term Randomized Controlled Trials (RCTs). This body of evidence was used in research exploring how symptoms change over time and assessed short-term outcomes in the general adult population. Regulatory findings describe group patterns related to its long history of use for acute irregularity.

However, the certainty of evidence for this specific application is largely based on extensive clinical experience and historical use rather than dedicated RCTs of the single active ingredient. The evidence base often includes studies that examined Sennosides in combination with other substances. Follow-up durations were limited, and long-term effects are not fully established beyond a few weeks.

Research on Management in Complex or Chronic Constipation

Research has explored the use of Sennosides in specific clinical contexts, such as in patients with chronic constipation or when irregularity is associated with other necessary medications. This work primarily relies on Randomized Controlled Trials (RCTs) and Systematic Reviews that compare Sennosides to other agents. Studies focused on outcomes related to systemic or functional imbalance, tracking changes in constipation severity scores and the frequency of spontaneous bowel movements over defined time intervals.

Research has examined older adults (geriatric patients) and those in palliative care settings experiencing constipation linked to opioid use. Findings indicate patterns related to how symptoms evolved in the observed populations. Despite these studies, the evidence quality varies across studies, particularly in highly specialized cohorts where sample sizes were modest. Systematic reviews have indicated that data for certain groups remain insufficient to draw broad conclusions.

Evidence for Use in Bowel Cleansing Regimens

Sennosides was evaluated in research exploring its utility as part of the regimen for preparing the colon prior to diagnostic procedures. Studies primarily consisted of acute, high-dose Randomized Controlled Trials (RCTs) that compared Sennosides against other standard preparation solutions. The data on the overall adequacy of cleansing has been noted by regulatory bodies as inconsistent across the body of evidence. Certainty remains low when comparing results against all non-Sennoside regimens.

Key Studies & References Laxatives - World Health Organization (WHO) Essential Medicines List

Frequently Asked Questions (FAQ)

Common questions about Регулакс (FAQ)


Q: Is there a risk of dependence or 'withdrawal syndrome' when using Регулакс?

Official information indicates that taking stimulant laxatives for longer than a brief period of treatment may lead to impaired function of the intestine and dependence on laxatives. This risk is the basis for the regulatory constraint defining the duration of use as strictly short-term.


Q: Is Регулакс allowed for use during pregnancy?

Regulatory documents state that use during pregnancy is generally not recommended and should be avoided. Consultation with a health professional is advised to determine if use is appropriate in individual circumstances.


Q: What are the restrictions on using Регулакс during breastfeeding (lactation)?

Official information indicates that small amounts of the medicine’s metabolites may pass into breast milk. Use during lactation is generally not recommended or should be avoided unless a doctor has advised its use.


Q: Can Регулакс disturb the water and electrolyte balance in the body?

Prolonged use or misuse of the medication may lead to disturbances in fluid and electrolyte balance, specifically hypokalaemia (low potassium levels). This risk is the basis for the regulatory constraint defining the duration of use as strictly short-term.


Q: Is it true that Регулакс can be taken for diabetes?

The specific composition of the product, including non-active ingredients (excipients), must be checked against the official product label. Some liquid formulations of Regulax contain sorbitol, and this requires confirmation against the specific patient’s condition and the product label. The exact composition details are found in the official documents.


Q: Is it true that long-term use of Регулакс can cause atony of the intestine?

Long-term use of stimulant laxatives may be associated with impaired function of the intestine, sometimes resulting in a loss of normal muscle tone, known as an atonic colon. This adverse outcome is documented in regulatory safety profiles.


Q: Can adrenal cortex hormones increase the risk of hypokalaemia when taking Регулакс?

Yes, regulatory documents list corticosteroids (a type of adrenal cortex hormone) as a medicine that interacts with sennosides. Taking this combination may increase the risk of hypokalaemia, which is an electrolyte imbalance.


Q: Is the effectiveness of Регулакс related to the level of the active metabolite in the blood?

Official pharmacological information indicates that the therapeutic action of sennosides is specific to the colon (large intestine). The product’s effect is independent of systemic absorption into the bloodstream.


Q: What should I do if Регулакс has not started working after 12 hours?

Regulatory instructions define the expected effect to occur within 6 to 12 hours. If no bowel action has occurred after a set period, or if symptoms persist, official guidance advises seeking professional medical advice.


Q: Can Регулакс be used for preparation for medical procedures?

Research has examined the use of sennosides as part of a regimen for preparing the colon before certain diagnostic procedures. However, this specific use may not be listed as an authorized indication on all official product labels.


Q: Do I need to drink water with Регулакс drops, or can I take them as is?

Specific instructions for the liquid drop formulation, such as taking them with or without water, are detailed in the product’s Patient Information Leaflet. The precise method of administration is detailed in the official instructions and should be respected.


Q: Why is sorbitol included in the composition of Регулакс drops?

Sorbitol is listed as an excipient (a non-active ingredient) in some liquid formulations of Regulax. In pharmaceutical preparations, such components are often included to act as a sweetener, solvent, or stabilizer, as detailed in the official composition documents.


Q: Can Регулакс cause an allergic reaction?

Hypersensitivity (allergy) to the active substance or any non-active ingredients is listed as a contraindication in official documents. Hypersensitivity reactions affecting the skin have also been reported as possible undesirable effects.


Q: Is Регулакс allowed for patients with hemorrhoids or anal fissures?

Sennosides are used in clinical practice to soften stool and reduce straining during defecation in patients with these conditions. However, this specific usage may not be listed as an official indication on all product labels.


Q: Does Регулакс have side effects related to the nervous system?

While the main side effects are gastrointestinal, regulatory listings mention that nervous system effects, such as confusion or dizziness, may occur. These are usually documented in cases associated with severe fluid and electrolyte imbalance caused by misuse.


Q: Does Регулакс help with constipation caused by taking other medications?

Research has explored the use of sennosides in specific contexts, such as when temporary bowel irregularity is associated with taking other necessary medications. For example, studies have examined its use in patients experiencing constipation related to opioid medication use.


Q: Can Регулакс drops be added to food or drinks?

The official product instructions for the method of administration are provided for the liquid solution. Altering the administration by adding the drops to food or unauthorized liquids is not described in the regulatory guidance.


Q: Is there a risk of Регулакс overdose and what are its symptoms?

Yes, an overdose is possible. Official regulatory information documents the major symptoms of overdose as severe cramping pain and intense diarrhea, which can lead to significant loss of fluid and electrolytes, specifically potassium depletion.


Q: Does Регулакс contain gluten?

Information regarding the presence of gluten must be determined by reviewing the excipients (non-active ingredients) listed in the specific product’s Summary of Product Characteristics or Patient Information Leaflet. This detail is found in the official composition documents.


Q: Can Регулакс be taken if there is already severe dehydration?

No, regulatory documents strictly state that the use of sennosides is absolutely prohibited in individuals who already have a severe dehydration state involving water and electrolyte depletion.


Q: Can Регулакс be taken if the cause of constipation is unknown?

Official product information contraindicates (prohibits) the product’s use in cases of undiagnosed acute or persistent gastrointestinal complaints, particularly abdominal pain of unknown origin.


Q: Does Регулакс affect the ability to drive a car or operate machinery?

The Summary of Product Characteristics (SmPC) for senna-containing products generally states that there is no known effect on the ability to drive or use heavy machinery.


Q: Does Регулакс affect the intestinal microflora?

The product’s mechanism of action is dependent on the colonic microflora (bacteria in the large intestine), which is necessary to metabolize the parent molecule into its active substance. The effect on the microflora is not typically detailed in regulatory documents.


Q: How often can the course of Регулакс be repeated?

The course of treatment is strictly defined as short-term, typically not to exceed one week. While the frequency for repeating short-term courses is not explicitly defined in the general regulatory text, using the product for more than 1–2 weeks requires medical supervision.


Q: Can Регулакс be used for irritable bowel syndrome (IBS) with predominant constipation?

Official warnings prohibit the use of the medicine in patients with acute inflammatory bowel diseases. Irritable Bowel Syndrome (IBS) is a separate condition that has been the subject of some research regarding senna use, but it is not listed as an official indication.


Q: Are there storage restrictions for Регулакс after opening the bottle?

The general regulatory text covers storage conditions for the unopened product. The stability or post-opening shelf life of the liquid formulation, if applicable, would be specifically detailed in the product's full Patient Information Leaflet.


Q: Can Регулакс cause a rash or skin itching?

Yes, adverse reactions affecting the skin have been documented in official safety profiles. These include pruritus (itching), urticaria (hives), and exanthema (a rash).


Q: Is it true that Регулакс helps with postpartum constipation?

Clinical practice summaries suggest that senna may be used to manage constipation in the puerperium (postpartum period), though medical advice is required if breastfeeding. This is based on general clinical patterns rather than a specific official postpartum indication.


Q: What is the mechanism of action of the sennosides contained in Регулакс fruit cubes?

The product's function begins when sennosides are converted by colonic bacteria into the active substance, which then stimulates the muscle contractions of the colon and helps reduce water reabsorption to facilitate bowel movements.


Q: Does Регулакс affect the absorption of nutrients from food?

The acceleration of intestinal transit is documented to reduce the absorption of co-administered oral medications. Regulatory documents do not generally contain specific data on the absorption of general food nutrients.


Q: Can Регулакс be used for chronic constipation?

The medicine is officially indicated for the short-term relief of occasional constipation. Its use is limited to a maximum of one week unless there is medical supervision, and it is not intended for the management of chronic conditions.


Q: What will happen if I take Регулакс in the morning instead of the evening?

Official regulatory documents advise taking the dose at bedtime to ensure the expected effect occurs within the 6 to 12 hour timeframe. Taking the medicine at a time other than bedtime is expected to shift the 6 to 12 hour timeframe for the desired effect, which may then occur during the day.


Q: What other components besides senna are included in Регулакс fruit cubes?

The specific components (excipients) of the fruit cube formulation are listed in the product’s Summary of Product Characteristics (SmPC) or Patient Information Leaflet, which are the official regulatory sources for ingredient information.


Q: Why do Регулакс fruit cubes have a dark brown color?

Official regulatory documents describe the appearance of the dosage form. The dark brown color is a result of the formulation process and the natural, botanical origin of the active ingredient, Senna.


Q: How quickly should natural bowel functions return to normal after stopping Регулакс?

Official information indicates that once regularity has been regained, the dosage should be reduced and the medication can usually be stopped. The documentation does not specify a precise timeframe for a complete return to natural function after cessation.

How should Регулакс be stored and disposed of?

How to Store and Dispose of Регулакс

Storage Conditions

Регулакс must be stored at room temperature, generally between 20 C and 25 C (68 F and 77 F), with a mandatory maximum of 30 C. To maintain product stability, the medication must be stored in the container it came in, kept tightly closed, and protected from excessive heat, moisture, and direct light. The product must not be refrigerated or allowed to freeze.

All forms of this medication must be stored out of the reach and sight of children to prevent accidental ingestion.

Disposal Requirements

Unused or expired Регулакс should be disposed of according to local pharmaceutical waste regulations. Regulatory bodies encourage the use of an official medicine take-back program when available. The product should not be flushed down the toilet or poured into a drain unless specific instructions permit this.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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