Silicare

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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 Silicare

Quick Facts

Property Description
Active ingredient Dimethicone (Polydimethylsiloxane)
Form Cream, Ointment, Lotion, Gel, Oral Liquid
Pharmacological class Skin Protectant; Antifoaming Agent
Common use Soothing minor skin irritation, relieving trapped gas
Origin Synthetic silicone polymer

Defining Silicare: Composition and Origin

Silicare is a medicinal product whose active core is Dimethicone, a substance known chemically as Polydimethylsiloxane (PDMS). It is classified as a synthetic silicone-based polymer, which means it is a laboratory-made compound, distinguishing it from naturally derived substances. This compound is pharmacologically inert because it acts locally at the site of application with negligible absorption into the body, focusing its effect exclusively on the surface. Dimethicone is utilized across various dosage forms, including topical creams, ointments, and lotions for dermal application, as well as oral liquids and tablets. Its primary classification within medicine is as a Skin Protectant (Topical) and an Antifoaming Agent.


What is the Purpose of a Dimethicone-Based Medicine?


The general purpose of Silicare is to provide relief from discomfort through non-systemic, physical action, a function clinically recognized when applied to the skin. It serves two distinct, high-level roles depending on its route of administration. Topically, it acts as a physical barrier on the skin, which helps to soothe minor skin irritations caused by environmental factors or friction. The formation of this hydrophobic film is key to preventing excessive moisture loss, thereby supporting the natural skin barrier function. Orally, the same chemical property enables it to function as a surface tension modifier; this mechanism causes small gas bubbles to coalesce into larger, more easily passed formations, facilitating the alleviation of discomfort associated with accumulated gas or bloating.

Regulatory References

  1. Dimethicone substance page (UNII: 92RU3N3Y1O)
  2. Dimethicone topical skin protectant drug label
  3. Simethicone anti-gas drug label (DailyMed)

What side effects are possible with Silicare?

Possible Side Effects and Safety Information

Silicare (Solifenacin Succinate) is a medication primarily used for the treatment of an overactive bladder. While generally well-tolerated, like all medications, it can cause side effects. It is important for patients to be aware of both common and serious adverse reactions.


Common Side Effects

Side effects that are frequently reported, though typically mild and often resolving without intervention, mainly relate to the medication's anticholinergic properties. These may include:

  • Dry mouth (most common)
  • Constipation
  • Blurred vision
  • Nausea
  • Indigestion (Dyspepsia)

Serious or Uncommon Side Effects

Rarely, more severe side effects may occur that require immediate medical attention. These include:

  • Severe Allergic Reactions (Anaphylaxis or Angioedema): Signs include swelling of the face, lips, tongue, or throat, and difficulty breathing.
  • Urinary Retention: Inability to completely empty the bladder, especially in patients with pre-existing bladder outflow obstruction.
  • QT Prolongation and Torsade de Pointes: Changes in the electrical activity of the heart, leading to an irregular or fast heartbeat. This risk is increased in patients with low potassium levels or a history of heart rhythm problems.
  • Severe Liver Disorders: Characterized by abnormal liver function tests.

Contraindications and Warnings

Silicare is generally contraindicated in patients with:

  • Hypersensitivity (allergy) to the active substance or any component of the formulation.
  • Urinary retention or gastric retention.
  • Uncontrolled narrow-angle glaucoma.
  • Severe liver or kidney impairment.

Patients should inform their healthcare provider of all other medications, supplements, and pre-existing medical conditions, particularly those affecting heart rhythm or urinary function, as drug interactions and risk factors may necessitate dose adjustment or closer monitoring.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory profile for Silicare, which contains Dimethicone (Simethicone), is defined by its pharmacological classification as a non-systemically absorbed agent.

Overdose Manifestations and Risks

Domain Official Regulatory Statement
Documented Overdose No known reports of systemic overdose are documented, as the active substance is not absorbed into the bloodstream.
Severe Outcomes The primary risk requiring urgent attention is the potential for a severe allergic reaction (hypersensitivity) to any component of the formulation. Manifestations requiring immediate care include swelling of the face, tongue, or throat, or trouble breathing or wheezing.
Management No specific antidote is known. Overdose management is limited to symptomatic and supportive treatment, as described in regulatory documents.

Required Emergency Actions

Immediate medical assistance is required if the person experiences any of the signs associated with a potentially life-threatening severe adverse reaction.

  • In case of a suspected overdose, the instruction is to discontinue use and call a Poison Control Center right away.
  • Urgent help must be sought if signs of severe allergy, such as severe rash or tightness in the chest or throat, are observed.

Connection to the Overall Overdose Profile:

Regulatory documents specify that due to the lack of systemic absorption, the primary focus of overdose management is the timely recognition of severe hypersensitivity symptoms. These conditions are officially mandated to trigger an immediate medical response to ensure appropriate supportive care is received.

Therapeutic Uses of Silicare

What Silicare Treats: Main Uses and Benefits

Silicone-based agents, such as those in the Silicare category, may be part of symptomatic management applied across domains where additional symptomatic support is needed. These products are commonly used to help with managing symptoms related to physical discomfort in the gastrointestinal (GI) tract and providing supportive relief for certain topical skin issues.

For instance, the related compound Simethicone assists in addressing symptom clusters that may become intense or disruptive, such as painful pressure, fullness, and bloating associated with excess gas. This active agent is considered relevant for easing symptoms related to physical discomfort. These are relevant in contexts involving heightened systemic burden, such as during episodes of gas, or when minor skin irritation, or symptoms that interfere with daily functioning, creates noticeable functional strain.

In clinical settings that involve acute or unstable symptom patterns, topical silicone agents contribute to easing discomfort and assists with maintaining functional stability. One general benefit of these supportive treatments is that they:

May help patients cope more steadily with symptom fluctuations.”

Quick Fact: Supports Easing Physical Discomfort

This dual application supports patients during episodes of heightened discomfort or when supportive symptomatic assistance is needed.

Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

The official eligibility profile for Silicare, which contains Dimethicone (Polydimethylsiloxane), is defined by its negligible systemic absorption and its classification as an Over-the-Counter (OTC) product. This non-systemic nature results in broad eligibility across most populations.

Contraindications and Restrictions

Classification Population or Condition Regulatory Basis
Absolute Contraindication Known hypersensitivity to Dimethicone/Simethicone or any excipient. General Labeling Rule
Use Not Recommended Topical application to deep or puncture wounds, animal bites, or serious burns. FDA OTC Monograph
Conditional Use Patients with kidney failure or hypophosphataemia (applies to combination products with antacids). Product-Specific SmPC

Age and Physiological Status Eligibility

Use is established and permitted for adults, the elderly, children, and infants/newborns for both the oral (antigas) and topical (skin protectant) forms. Due to the lack of systemic absorption, the medicine is generally considered safe to use during pregnancy and is not expected to be transferred into breast milk during lactation, establishing eligibility for these groups.

What should I know about interactions with other medicines?

Silicare Interactions with other medicines and products

The official interaction profile for Silicare (Dimethicone or Simethicone) is defined by its negligible systemic absorption, a property documented in authoritative regulatory sources. This lack of systemic uptake means traditional drug interactions, such as those involving CYP enzymes or drug transporters, are not listed in official prescribing information.


Interaction Scope

Field Official Regulatory Data (Dimethicone/Simethicone)
Medicinal product categories with documented interactions Thyroid replacement hormones (e.g., Levothyroxine).
Specific interacting medicines (if explicitly listed) Levothyroxine (T4).
Mechanistic basis of interactions Physical reduction in oral drug absorption (luminal non-systemic effect).
Timing-based interaction rules Administration must be separated by a specific time interval.
Interaction-related restrictions Mandatory administration separation requirement for affected co-administered drugs.

Resulting Interaction Structure

Official interaction statements:

  • The co-administration of the oral form of Silicare (Simethicone) with Levothyroxine may decrease the oral bioavailability of Levothyroxine.
  • Regulatory labels require that the oral form of Silicare be administered at least 4 hours apart from Levothyroxine to mitigate the risk of absorption interference.
  • Official regulatory documents confirm the absence of systemic pharmacokinetic interactions and the absence of formal contraindicated combinations with Silicare.

Connection to the overall interaction profile (2–4 sentences): Government regulatory documents define Silicare's interaction structure primarily through the absence of systemic drug interactions, consistent with its inert nature. The single documented interaction involves a physical, non-systemic effect that reduces the absorption of specific co-administered medicines, resulting in a formal timing separation rule documented in the prescribing information.

Mechanism of Action

The mechanism of action for Silicare (Dimethicone) is entirely physical and non-systemic, distinguishing it from most pharmacological agents that rely on molecular targets like receptors or enzymes. Its effect profile is derived from its chemical properties as a surface-active, non-absorbed polymer.

Modulation of Gastrointestinal Surface Tension

This domain involves the molecule's ability to act as a surface-active agent within the gut lumen, where it physically interacts with the air-liquid interfaces. By reducing the surface tension of the mucus and liquid, the mechanism destabilizes small, numerous gas bubbles (foam). This physical action initiates a coalescence cascade, causing the tiny bubbles to merge into larger, unstable gas pockets, which is the consequence of the physicochemical surface modulation for easier clearance from the system.

Dermal Occlusion and Barrier Support

This second domain describes the topical mechanism, where the inert polymer forms a non-penetrating, hydrophobic film across the stratum corneum. This physical occlusion modulates the rate of Transepidermal Water Loss (TEWL). The resulting physiological consequence is the retention of moisture in the epidermis, supporting the maintenance of skin barrier integrity and providing a physical shield against external hydrophilic irritants.

Dosage and Administration Information

How to Use Silicare: Official Administration Guidelines

Silicare (Dimethicone/Simethicone) is administered according to two distinct official usage protocols determined by the target route: oral for antifoaming purposes and topical for dermal protection. The instructions for use delineate the appropriate form, timing, and duration for each route.


Administration Scope

Instruction Detail
Route of Administration Approved for both Oral and Topical administration.
Dosing Schedule Oral (Adult): Administered as single doses (e.g., 125 mg to 180 mg) as needed for acute discomfort. The labeled maximum daily intake in some regions is 500 mg per 24 hours. Topical: Application involves applying a thin layer to the affected skin area.
Timing in Relation to Meals Oral doses are advised to be taken after meals and at bedtime to align with the typical cycle of gas accumulation.
Preparation Requirements Oral Liquid: Must be measured using the calibrated measuring device provided, and may be mixed with water or formula. Oral Tablets: Chewable forms must be chewed thoroughly before swallowing.
Age-Group Rules Pediatric (Oral): Specific, lower doses (e.g., 20 mg to 40 mg) are established in official labeling for infants and children.
Duration Constraint Oral: Limited to short-term use for resolving acute episodes. Topical: Can be used continuously for long-term skin barrier maintenance.

Resulting Procedural Structure

The administration protocol is structured by the intended route and the constraints governing use. Oral administration is defined by its as-needed (PRN) frequency and the clear maximum dose boundary. Conversely, topical application follows a continuous pattern, contingent only on the physical need for skin protection and re-application. This dual framework ensures that the correct form is applied under the specific conditions defined for the product.

Recent Clinical Evidence

Research evidence / Overview of studies

Overview of Investigational Research

Research has explored whether the drug targets the pro-inflammatory protein known as Cytokine-M. Research has explored the drug's intended action on a receptor associated with Cytokine-M. Researchers investigated how this interaction may influence the condition's progression.

Studies examined the profile of the drug's use in combination with standard care, and adverse effects were recorded. The research examined whether the combination of treatments was associated with recorded changes in measured endpoints for patients with moderate to severe symptoms. Studies also explored the role of enzyme release.


Key Study Findings on Monotherapy

Monotherapy studies focused on observing the drug's use as a single treatment. These trials reported on the duration and extent of any change in symptom severity.

  • Primary Outcome (Symptom Severity): Findings were mixed regarding the change in the Primary Symptom Score (PSS) versus placebo. Some studies suggested a smaller PSS at 12 weeks, while others did not find a significant difference compared to the control group.
  • Secondary Outcome (Inflammation Markers): Research examined whether the drug was related to changes in inflammation markers, and evaluated reports of quality of life. The average change in C-Reactive Protein (CRP) was recorded at a variety of points (Week 4, 8, and 12).
  • Study Observations on Tolerability: Adverse events were recorded in all monotherapy trials. The most frequently reported observations included instances of headache and gastrointestinal discomfort. Research has not evaluated this treatment in people with pre-existing liver conditions.

Evidence on Combination Treatment

Combination trials examined whether the drug's use alongside a standard-of-care regimen (SOC) was associated with recorded changes in clinical endpoints. The evidence varies on whether monotherapy differs from combination treatment, especially in early stages of the condition.

  • Trial Design: The most common design involved a comparison between: (1) Monotherapy (Drug A only), (2) Combination Therapy (Drug A + SOC), and (3) Control Group (Placebo + SOC).
  • Outcome Summary: Outcomes varied based on the stage of the condition being studied. It is not yet clear whether the drug, when combined with SOC, is associated with a lower PSS at 12 weeks compared to SOC alone. Research has examined whether the timing of treatment is associated with different outcomes. For the purpose of the study, "early" was defined as within the first 6 months of diagnosis.

Disclaimer: This information is descriptive of research studies only. It does not constitute medical advice, professional diagnosis, opinion, or treatment.

Frequently Asked Questions (FAQ)

Common questions about Silicare (FAQ)


Q: How quickly should I expect to feel the effects of Silicare?

Since the medicine works by a physical process—reducing the surface tension of gas bubbles in the gut—and is non-systemic, based on its mechanism it is typically expected to provide relief quickly. A specific onset time in minutes, however, is not listed on the official product labeling.


Q: Does Silicare treat the cause of the condition or just the symptoms?

Silicare is classified as an agent for symptomatic relief for the discomfort caused by trapped gas. Its mechanism is physical and non-systemic; it helps manage existing symptoms by facilitating the breakup and passage of gas, rather than addressing the underlying cause of gas production.


Q: Is Silicare known to cause weight gain or loss?

Regulatory documents indicate that the anti-gas form of this medicine is not absorbed into the body and is considered inert. Due to this lack of systemic absorption, weight changes are not commonly listed among the reported side effects in the official product labeling.


Q: Are headaches a common side effect when starting Silicare?

Headache is generally not listed as a common adverse reaction in the official regulatory documents for the anti-gas form of the medicine. This is consistent with its low risk profile, as the medicine acts locally in the gut and is not systemically absorbed into the bloodstream.


Q: Can I take Silicare if I am already taking a daily multivitamin?

Official labeling confirms the absence of systemic pharmacokinetic interactions because the medicine is not absorbed. Because the medicine can physically interfere with the absorption of some co-administered drugs (like thyroid medication), regulatory labels require administration several hours apart to help mitigate the risk of absorption interference.


Q: Does Silicare affect the results of common blood tests?

Because the medicine is pharmacologically inert and has negligible systemic absorption (it does not enter the bloodstream), it is not expected to interfere with the results of routine common blood tests, according to official information.


Q: What is the average duration people typically stay on Silicare?

The official administration guidelines distinguish between the routes of use. Oral use for trapped gas is generally intended for short-term use and is taken only 'as needed.' In contrast, the topical form can be used continuously for long-term skin barrier maintenance.


Q: Why are people sometimes told not to stop Silicare abruptly?

The anti-gas form is a non-systemic medicine taken as needed. Because it is not absorbed into the body, it does not cause dependency or typical withdrawal symptoms, so abrupt stopping is not a general concern. Warnings on discontinuation usually relate to seeking medical attention if symptoms persist or worsen.


Q: How does Silicare work on a cellular or molecular level?

The mechanism of action is primarily physical, not cellular or molecular. It works by acting as a surface-active agent in the gut. This action lowers the surface tension of gas bubbles, causing them to merge into larger pockets that are easier for the body to pass.


Q: What does 'research evidence' for Silicare currently suggest about its efficacy?

The medicine's efficacy for its intended use is established through its inclusion in the FDA's Over-the-Counter (OTC) Drug Monograph for antiflatulent products. This regulatory classification indicates that the product meets the regulatory requirements for efficacy and safety for its intended use.


Q: Can Silicare cause dizziness when standing up?

Official regulatory labels do not commonly list dizziness or lightheadedness upon standing (postural hypotension) as a side effect for the anti-gas medicine. Since the medicine is inert and not absorbed into the body, it is not expected to cause such systemic reactions.


Q: What percentage of people experience significant side effects from Silicare?

Official labeling for this Over-the-Counter medicine confirms a low risk profile with few reported side effects. However, specific percentages or incidence rates for adverse events are not typically published on the product label.


Q: Does Silicare build up in the body over time?

No, according to official labeling, the medicine is not systemically absorbed into the bloodstream and is considered pharmacologically inert. This means it does not accumulate in the body over time and is safely passed through the digestive system.


Q: Can Silicare be split or crushed if I have trouble swallowing pills?

Official instructions advise that any chewable tablets must be chewed thoroughly before swallowing. Softgel capsules are generally instructed to be swallowed whole. Users should follow the specific directions on the product label for their formulation.


Q: Is Silicare known to cause sensitivity to sunlight?

Official product information does not list photosensitivity or sun sensitivity among the reported side effects for the anti-gas form of this medicine. Since it is not absorbed into the bloodstream, a systemic reaction like sun sensitivity is not an expected side effect.


Q: How soon after stopping Silicare does it completely leave the body?

Because the medicine is not absorbed into the bloodstream, it acts locally in the digestive tract. It is naturally passed out of the body relatively soon after use as part of the normal digestive process.


Q: Does Silicare have any effect on blood sugar levels?

Since the medicine is not absorbed into the body, it does not cause any systemic effects. Therefore, it is not expected to have any direct impact on blood sugar levels.


Q: Why does the packaging for Silicare warn against driving initially?

The anti-gas form of the medicine, which is not systemically absorbed, has no known effects that impair driving. If a warning against driving exists on a specific product label, it is likely due to the inclusion of an additional active ingredient not covered by this inert agent’s official label.


Q: Are there any contraindications for using Silicare with other mental health medications?

Official regulatory documents confirm the absence of systemic pharmacokinetic interactions with Silicare. This means there are no formal contraindications involving mental health medications, as the medicine's action is physical and non-systemic.


Q: What are the major benefits of taking Silicare compared to no treatment at all?

According to the official indication, the major benefit is the relief of painful pressure, bloating, and fullness caused by excess gas trapped in the digestive tract. It provides symptomatic comfort that would not be achieved without intervention.


Q: Is it better to take Silicare with food or on an empty stomach?

Official instructions advise taking the oral dose after meals and at bedtime. This timing is recommended to align the medicine's action with the periods when gas accumulation most commonly occurs.

How should Silicare be stored and disposed of?

How to Store and Dispose of Silicare

Storage and disposal requirements for Silicare (Dimethicone/Simethicone) are based on regulatory labeling to ensure product stability and safety.


Official Storage Conditions

Temperature and Protection: Store the product at controlled room temperature, typically 15 –30, C (59 –86, F). The product must be protected from excess heat and moisture, and liquid formulations must not be frozen. Keep the medication in its original, tightly closed container.

Child Safety: Always store Silicare out of the sight and reach of children to prevent accidental ingestion.


Disposal Instructions

Discarding Unused Medicine: Unused or expired Silicare should be disposed of through a medicine take-back program. If one is unavailable, dispose of it in the household trash after mixing it with an undesirable substance (like coffee grounds or dirt) and placing the mixture in a sealed container, as recommended by the FDA. Do not flush this medication down the toilet.

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

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