Closol

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Medically reviewed

Rosario Oropesa

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 Closol

What is Closol? (Clobetasol Propionate Overview)

Property Description
Active ingredient Clobetasol Propionate
Form Cream, Ointment, Solution, Gel, Emulsion, Foam
Pharmacological class High-Potency Topical Corticosteroid
General purpose Alleviation of severe inflammatory skin symptoms
Origin Synthetic Fluorinated Adrenocortical Steroid

What Type of Medicine is Closol? (Identity and Classification)

Closol, which shares its composition with other widely recognized Clobetasol Propionate products, is a prescription-only medication (POM). It is classified as a super-high-potency agent within the corticosteroid pharmacological class. This specific classification and strength are intended to provide the necessary level of intensive anti-inflammatory action to address severe, refractory inflammatory episodes.

Composition and General Therapeutic Purpose of Closol

The core composition of Closol is the single-ingredient product Clobetasol Propionate (C25H32ClFO5), a potent synthetic compound with strong glucocorticoid activity. This structure enables the medicine to provide intensive anti-inflammatory and localized immunosuppressive effects, which are its primary mechanisms of relief. The general therapeutic purpose of this action is the rapid alleviation of symptoms such as intense pruritus (itching) and pronounced erythema (redness) that accompany severe inflammatory dermatological conditions, such as severe psoriasis flares.

Available Forms and Route of Administration

Closol is formulated exclusively for topical or cutaneous application, meaning it must be applied externally to the skin or scalp. It is supplied in several distinct dosage forms, including Cream, Ointment, Solution, Gel, Emulsion, and Foam. These variations allow the active ingredient to be delivered across different skin types and anatomical locations, utilizing a range of base/vehicle types from occlusive fatty bases to liquid carriers, which is a standard approach for super-high-potency topical agents.

What side effects are possible with Closol?

Possible side effects and safety information

Closol (Clobetasol Propionate) is a super-high-potency topical corticosteroid, and its safety profile is defined by both common local reactions and the potential for serious systemic effects due to absorption, as documented in official regulatory sources.

Adverse Reactions and Classification

Adverse effects are grouped by frequency and the body system affected. Common reactions often occur at the application site and may include a burning sensation, stinging, pruritus (itching), irritation, and erythema (redness). Effects such as skin atrophy (thinning), striae (stretch marks), and telangiectasia (visible small blood vessels) are also documented local adverse reactions.

System-Organ Class Examples of Documented Effects
Skin and Subcutaneous Tissue Burning, stinging, pruritus, atrophy, folliculitis, secondary infection
Endocrine Disorders HPA axis suppression, Cushing's syndrome, hyperglycemia
Eye Disorders Cataracts, glaucoma, blurred vision

Serious Safety Considerations

The most significant systemic safety consideration is the potential for Hypothalamic-Pituitary-Adrenal (HPA) axis suppression, a reversible serious adverse reaction resulting from systemic absorption. This can potentially lead to glucocorticosteroid insufficiency upon treatment withdrawal. Manifestations of Cushing's syndrome have also been reported.

Duration and Population Constraints

The risk of both systemic and local adverse reactions, particularly skin atrophy, increases with prolonged use. Official regulatory labels specify an increased risk of systemic toxicity, including linear growth retardation, for pediatric patients due to their greater skin surface-to-body mass ratio. Use is generally restricted or contraindicated in certain conditions, such as rosacea and acne vulgaris, and on sensitive areas like the face.

Overdose and Emergency Response

Overdose and When to Seek Help

Overdose with Closol (an agent similar to benzodiazepines) primarily affects the Central Nervous System (CNS) and can range from mild effects to life-threatening complications. In isolated overdose, classic presentations include CNS depression with symptoms such as slurred speech, ataxia (loss of full control of bodily movements), and altered mental status. Vital signs may initially be normal or near-normal.

Immediate Medical Attention Required

Life-threatening respiratory depression is the most important adverse effect and requires immediate intervention. Patients or caregivers must seek medical attention immediately if they experience or observe any of the following signs, as these may indicate severe toxicity:

  • Unusual dizziness or lightheadedness
  • Extreme sleepiness or stupor
  • Slowed or difficult breathing
  • Unresponsiveness or comatose state

Overdose Risks

The risk of severe toxicity and death is substantially increased when Closol is taken with co-ingestants, such as ethanol (alcohol) or other medications that depress the CNS, including opioids. This combination significantly heightens the danger of serious complications like respiratory arrest.

Treatment Overview

Treatment for an acute overdose focuses on supportive care, which may include immediate airway management and mechanical ventilation for severe cases. Specific antidotal therapy, such as flumazenil, may be considered in limited situations as part of medical management. The priority is to address any respiratory compromise or abnormal vital signs first.

Therapeutic Uses of Closol

What Closol Treats: Main Uses and Benefits

Closol (Clobetasol Propionate) is a high-potency topical agent generally reserved for the management of severe inflammatory skin conditions and conditions where functional stability becomes affected. In clinical practice, this agent is used to address swelling, itching, and irritation associated with these conditions. It is applied in settings that involve acute or unstable symptom patterns where additional symptomatic support is needed.


Therapeutic Domains and Patient Support

Closol is commonly used to help manage conditions involving inflammatory or irritative processes, including severe plaque psoriasis, lichen planus, and discoid lupus erythematosus. It is considered relevant in clinical environments marked by heightened inflammation, where it can assist with maintaining functional stability and contributes to easing the overall symptom load during periods of heightened activity.

The medicine is applied to address symptom clusters that may become intense or disruptive, specifically symptoms related to heightened physiological activity, such as pruritus (itching) and erythema (redness). By assisting with the easing of symptoms related to inflammatory or irritative states, Closol contributes to easing the overall symptom load. This supports the management of episodes of heightened discomfort.

Quick Fact: Relief for Inflammatory Symptoms
Closol is applied when symptoms create noticeable physiological strain, primarily targeting severe redness and intense itching associated with chronic inflammatory skin diseases.

Eligibility and Restrictions for Use

Who can and cannot use Closol?

The population eligibility for Closol (Clobetasol Propionate) is strictly defined by regulatory documents, distinguishing between permitted use, restrictions, and absolute contraindications.

Contraindicated and Restricted Populations

Closol is contraindicated and must not be used by individuals with a known hypersensitivity to the active ingredient or any excipients. Use is also prohibited in patients with certain co-existing conditions, including untreated cutaneous infections (viral, fungal, or bacterial), rosacea, perioral dermatitis, or acne vulgaris.

Use is not recommended in pediatric patients under 12 years of age, as safety and efficacy are not established in this group, and there is a higher risk of systemic absorption. Adults are eligible for use, typically limited to short-term treatment (usually not exceeding two consecutive weeks).

Application and Physiological Restrictions

Application is strictly restricted for certain body regions; Closol must not be used on the face, axillae (underarms), or groin due to the increased risk of systemic effects like HPA axis suppression and localized skin atrophy. Use during pregnancy or lactation is also restricted and generally considered only when the potential benefit outweighs the documented potential risk.

What should I know about interactions with other medicines?

Closol Interactions with other medicines and products

Closol (clobetasol propionate) is a highly potent topical corticosteroid, and its interactions are primarily centered on the risk of increased systemic exposure, which can lead to clinically significant effects.

Pharmacokinetic and Pharmacodynamic Interactions

Mechanism / Interacting Agent Interaction Summary
Other Corticosteroids (topical or systemic) Concomitant use should be avoided. The primary concern is an additive effect that increases the risk of systemic corticosteroid adverse effects, such as Hypothalamic-Pituitary-Adrenal (HPA) axis suppression and Cushing's syndrome manifestations.
Strong CYP3A4 Inhibitors (e.g., ritonavir, itraconazole) These medicines can inhibit the metabolism of clobetasol propionate. This may increase the concentration of clobetasol in the body, raising the potential for systemic exposure and its associated adverse effects.
Latex-Containing Products Direct contact with the medication may damage and reduce the effectiveness of certain latex products, such as condoms and diaphragms. Physical contact between the drug and these products should be avoided.

Conditions Affecting Interaction Risk

Systemic absorption, and therefore the risk of drug interaction and HPA axis suppression, is increased when the medication is applied to a large body surface area, used for prolonged periods, or utilized with occlusive dressings. Patients with pre-existing conditions like diabetes mellitus may also face an elevated risk of high blood sugar due to systemic corticosteroid effects, requiring careful monitoring.

Mechanism of Action

How Closol Works: Mechanism of Action

Modulating Gene Expression via the Glucocorticoid Receptor

Closol acts primarily as an agonist for the Glucocorticoid Receptor (GR), a protein located inside target cells. By binding to and activating the GR, the drug complex enters the cell's nucleus and modulates specific genes. This action suppresses the production of pro-inflammatory messengers and boosts the synthesis of natural anti-inflammatory proteins, thereby modulating the cell's inflammatory response.


Downstream Suppression of Inflammatory Cascades

The resulting increase in anti-inflammatory proteins, such as Annexin A1, leads to the inhibition of the enzyme Phospholipase A2 (PLA2). Blocking PLA2 prevents the release of Arachidonic Acid, which is the critical precursor for inflammatory agents like prostaglandins and leukotrienes. This mechanistic cascade limits precursor availability for key inflammatory pathways, which results in an anti-inflammatory effect that contributes to decreased localized edema and immune-driven irritation.


Regulating Vascular and Cell Proliferation Dynamics

The drug’s mechanism directly influences the local environment by promoting vasoconstriction (narrowing of local blood vessels) and mediating an anti-proliferative effect. Vasoconstriction reduces blood flow and vascular permeability, resulting in a decrease in erythema (redness) and fluid accumulation. The anti-proliferative action suppresses the rapid cell division of keratinocytes, which results in the decreased formation of excessive epidermal layers and thickened tissue.

Dosage and Administration Information

Closol (Clobetasol Propionate) is classified as a super-high-potency topical agent. The medicine is formulated exclusively for cutaneous (topical) application to the skin or scalp and is supplied in multiple forms, including creams, ointments, solutions, and foams.


Administration Protocol

The general principle of use involves applying a thin layer of the preparation gently rubbed into the affected skin area, typically once or twice daily. Established quantitative limits indicate that the total amount applied must not exceed 50 grams (or 50 mL) over one week, irrespective of the specific formulation used. This maximum limit applies to adult regimens.


Duration and Contextual Restrictions

Use of Closol is limited to short courses due to its potency. The maximum duration for continuous application is typically two consecutive weeks for most conditions. For severe plaque psoriasis, application may be extended up to four consecutive weeks, but continuous therapy does not exceed this limit. Discontinuation of therapy follows the achievement of adequate symptom control.

To ensure proper administration, specific procedural conditions apply. The medicine is not used beneath occlusive dressings, such as bandages or wraps, unless specifically indicated. Furthermore, application to sensitive areas like the face, groin, or axillae (underarms) is routinely avoided. For the majority of its forms, the use of Closol is not recommended in children under 12 years of age, establishing an age-based constraint on its administration.

Recent Clinical Evidence

Research evidence / Overview of studies

Evidence in Episodic Migraine Prevention

The drug was examined in trials focused on the frequency and severity of migraine attacks in several phase 3 trials focusing on individuals with episodic migraine (experiencing fewer than 15 headache days per month).


Findings from trials have explored outcomes in a range of patient populations. Primary evidence on the drug's effects was gathered through several large-scale, double-blind, placebo-controlled trials. Across these studies, the drug was typically administered as an injection once every four weeks.


The main findings reported that individuals receiving the drug compared to placebo measured differences in monthly migraine days (MMD) over a 12-week treatment period. Further analysis explored the percentage of patients achieving at least a 50% reduction in MMD.

Evidence in Chronic Migraine Management

Research has also examined the drug in patients diagnosed with chronic migraine (experiencing 15 or more headache days per month). A separate set of studies evaluated the drug's administration at a higher, less frequent dose over a 6-month period.


Trials also included administration at the onset of an attack.

Tolerability and Safety Profile

Safety and tolerability were areas of investigation in the clinical trials. The most commonly reported adverse events consisted of mild injection-site reactions, fatigue, and constipation. The drug’s tolerability profile was also characterized in trials.


Exclusion criteria in the studies often included patients with a history of severe cardiovascular events, and these trials did not provide data on the drug's safety in pregnant women.

Combination Therapy Research

Research evaluated whether the combination is associated with changes in patient compliance and overall quality of life in studies where this drug was added to a patient’s existing preventative regimen.

Frequently Asked Questions (FAQ)

Common questions about Closol (FAQ)


Q: Is Closol the same kind of medicine as [similar drug name]?

Closol contains Clobetasol Propionate, which is consistently classified by regulatory bodies as a super-high-potency topical corticosteroid. This classification defines the pharmacological class and relative strength of the medicine. Its potency is a key factor in how it is used compared to other medicines in the same class.


Q: Why do some people say Closol is better than other medicines for the same condition?

Official information indicates that Closol is classified as one of the most potent topical corticosteroids available. It is specifically indicated for the short-term relief of severe inflammatory skin symptoms. This high-potency status explains why it may be selected over less potent options for more difficult skin conditions.


Q: Does Closol affect your mood or mental state?

According to the official product information, Closol can be absorbed into the body and may cause systemic effects such as HPA axis suppression or Cushing's syndrome. These endocrine conditions can involve a wide range of body system effects. Additionally, mental disorders are listed as conditions that may be aggravated by exposure to corticosteroids.


Q: Can young adults or teenagers use Closol?

Regulatory documents define age constraints for this product. The use of most Closol products is not recommended in children under 12 years of age due to an increased risk of systemic toxicity. For patients in the 12 and above age group, the regulatory constraints shift from a strict recommendation against use to short-term treatment under professional supervision. Some specific formulations have an age limit of 16 or 18 years.


Q: Is the evidence for Closol use considered strong by regulators?

The fact that Closol is classified as a prescription-only medication (POM) by regulatory bodies indicates that sufficient evidence of safety and effectiveness was found for its approved indications. This status indicates that the medicine has met the required standards for safety and effectiveness for its approved indications.


Q: Does Closol contain any ingredients that cause allergic reactions?

Official product information states that Closol is contraindicated (must not be used) in anyone with a known hypersensitivity or allergy to the active ingredient, Clobetasol Propionate, or any of the inactive ingredients (known as excipients) in the product formulation.


Q: Why do official documents emphasize talking to a doctor about Closol's risks?

Official documents advise consulting a doctor because Closol is a potent medicine that can cause serious, reversible adverse effects like HPA axis suppression due to systemic absorption. This condition requires periodic evaluation and monitoring by a healthcare professional.


Q: Is it true that Closol is sometimes used for things not listed in its main purpose?

Regulatory information advises patients to use Closol only for the specific condition and time period for which it was prescribed. The official label only details the approved uses of the medicine.


Q: How do I know if Closol is actually working for me?

The medicine is officially indicated for the relief of inflammatory and pruritic manifestations of severe skin conditions. A patient may notice that symptoms like intense itching (pruritus) and pronounced redness (erythema) begin to subside if the treatment is having the intended effect.


Q: What official warnings or black box warnings are associated with Closol?

The most significant official warnings relate to the potential for Hypothalamic-Pituitary-Adrenal (HPA) axis suppression and the development of Cushing's syndrome due to systemic absorption. These are the most serious systemic safety considerations outlined in official documents.


Q: What is the experience of people who have been on Closol for over a year?

Official administration protocols state that continuous use of Closol is typically limited to two consecutive weeks (or up to four weeks for severe psoriasis). It is not intended for use over extended periods like a year due to the risk of systemic and local adverse effects.


Q: What is the official recommended method for safely stopping Closol?

Due to the risk of glucocorticosteroid insufficiency (a condition related to HPA axis suppression) upon withdrawal, regulatory information indicates that the product must be discontinued as directed by a physician. Discontinuation may involve a gradual reduction or monitoring measures due to the potential for HPA axis suppression upon cessation.


Q: What should I do if the side effects of Closol become bothersome?

Official regulatory information advises patients to report any signs of local adverse reactions, such as burning, stinging, or irritation, to their physician. Severe or life-threatening symptoms are considered a medical emergency and should be addressed immediately by a healthcare professional.


Q: What evidence supports the use of Closol for mild versus severe cases of the condition it treats?

Closol is classified as a super-high-potency agent and is indicated for the moderate to severe manifestations of corticosteroid-responsive dermatoses. This classification confirms that the medicine is typically reserved for more serious inflammatory episodes, not mild cases.


Q: Can Closol cause people to feel tired or sleepy?

Official safety information indicates that certain serious side effects related to systemic absorption, such as Adrenal Insufficiency, may include symptoms like tiredness (fatigue) and dizziness. These symptoms are not typically listed as common local adverse reactions, but rather as signs of potential systemic effects.


Q: Are headaches a common side effect of Closol?

Headache is listed as a potential adverse reaction for some specific Closol formulations, such as the topical solution when it is applied to the scalp. However, this symptom is not uniformly listed as a common adverse reaction across all formulations and application sites.


Q: What happens if I forget to take Closol for one day?

Regulatory safety information addresses missed doses by generally advising against applying two doses at once, with guidance focusing on timing relative to the next scheduled dose. Patients are advised to follow the specific instructions provided by their healthcare professional.


Q: How long does it usually take to feel a difference after starting Closol?

The drug's anti-inflammatory mechanism involves the modulation of gene expression, which leads to downstream effects. Therefore, the onset of clinical relief may occur over a period of hours to days after starting the application.


Q: Will Closol interact with common pain relievers like ibuprofen or acetaminophen?

Official drug interaction databases generally show no interaction between topical clobetasol and common over-the-counter pain relievers such as acetaminophen. Patients are still advised to inform their physician about all medicines and products they are using.


Q: Are there any foods or drinks I need to avoid while taking Closol?

Regulatory labels for topical clobetasol do not list any specific food or drink interactions. Since the medicine is applied topically to the skin, food and drink interactions are generally not a concern.


Q: Is Closol generally considered appropriate for elderly patients?

Official regulatory documents note that the bodies of older adults may process medicines more slowly than younger adults. This reduced metabolic clearance may increase the risk of systemic side effects, suggesting that careful monitoring may be warranted during use.


Q: What is the difference between Closol and its generic version?

The generic product, Clobetasol Propionate, is required by regulatory bodies to meet the same quality and performance standards as the original brand-name drug. This includes the same potency and ensuring that it is bioequivalent to the original formulation.


Q: Is it normal to feel a little dizzy when first starting Closol?

Dizziness is not listed among the common local side effects that occur at the application site. However, it is a potential symptom of the serious systemic side effect Adrenal Insufficiency, which is associated with systemic absorption.


Q: Can Closol be taken if someone has a history of liver problems?

Patients with liver problems may be at an elevated risk of systemic side effects because the drug may not be metabolized (broken down) as effectively by the body. This is a pre-existing condition that warrants a regulatory caution due to the increased risk of systemic absorption.


Q: Does Closol have any known interactions with birth control pills?

Regulatory documents for topical clobetasol do not list any known interactions with oral contraceptive pills. However, patients should always inform their prescribing physician about all medications and supplements being used.


Q: How quickly does Closol leave the body after you stop taking it?

Studies on the drug’s metabolic properties show that its effect on the endocrine system, measured by cortisol suppression, can still be apparent up to 96 hours after use. This indicates that the medicine may remain active in the system for several days after discontinuation.


Q: Do men and women experience different side effects from Closol?

The adverse reactions and safety warnings listed in regulatory labels are not differentiated by sex. They are grouped by the body system affected (e.g., skin, endocrine) and the frequency of occurrence, applying to all users.


Q: Is Closol considered a controlled substance or addictive?

Closol (Clobetasol Propionate) is classified by regulatory agencies as a non-controlled substance. It is not considered a controlled substance and is not classified as addictive.


Q: Can Closol be used by people with high blood pressure?

Official information indicates that high blood pressure is listed as both a potential symptom of the serious side effect Cushing's syndrome and as a pre-existing medical condition that may be aggravated by corticosteroid exposure.


Q: Does Closol affect fertility or reproductive health?

Regulatory documents indicate there is no evidence that Clobetasol affects fertility in men or women. Use is generally restricted during pregnancy or lactation due to potential risks to the fetus.


Q: Will taking Closol affect my ability to drive or operate machinery?

Regulatory safety information indicates that certain serious systemic side effects, such as dizziness and blurred vision, can potentially occur. The presence of these symptoms is a factor that could potentially compromise the ability to drive or operate machinery.


Q: What happens if Closol is taken with alcohol?

Regulatory labels for topical clobetasol do not list a direct contraindication regarding the consumption of alcohol. This is generally because the absorption into the bloodstream is limited when applied topically.


Q: Can I take other supplements or vitamins while using Closol?

Patients are officially advised to inform their physician about all other medicines, supplements, and vitamins they are taking. This is necessary to check for any potential interactions that could increase the risk of side effects.


Q: Does Closol have a history of being recalled or having safety issues?

Regulatory safety websites document that specific lots of Clobetasol Propionate Ointment have been the subject of voluntary recalls by the manufacturer. These recalls are often issued for quality control reasons, such as foreign particulate matter.


Q: Why is the official use condition described as 'adjunctive' or 'monotherapy'?

The drug is indicated for short-term relief (which implies monotherapy for flares) but can also be utilized for intermittent maintenance therapy over a longer total period. This intermittent use may be considered a part of a patient's overall treatment regimen.


Q: Can a person become 'resistant' to Closol over time?

Clinical literature has documented the phenomenon of tachyphylaxis (reduced response) to the anti-inflammatory action of topical clobetasol over the course of treatment. This is one reason official use is limited to short durations.


Q: Is it necessary to have regular blood tests while taking Closol?

Regulatory documents recommend that patients receiving potent topical steroids over large body areas should be evaluated periodically for HPA axis suppression. This monitoring may be performed using laboratory tests such as the urinary free cortisol test or the ACTH stimulation test.


Q: Does Closol affect kidney function?

Official safety information lists Impaired kidney function as one of the pre-existing medical conditions that may be aggravated by exposure to corticosteroids. Patients with this condition may require closer supervision.


Q: Are there any contraindications related to mental health conditions and Closol use?

Official information lists mental disorders as one of the pre-existing medical conditions that may be aggravated by exposure to corticosteroids. Use in patients with these conditions may require special consideration.

How should Closol be stored and disposed of?

Storage and Disposal of Closol

Official regulatory documentation for Closol (Clobetasol Propionate) defines specific conditions for storage and disposal to maintain its stability and ensure public safety.


Required Storage Conditions

Closol must be stored at controlled room temperature, typically between 15°C and 30°C (59°F and 86°F), and away from excess heat and moisture. The product must not be frozen or refrigerated as this can compromise its potency. It is a mandatory requirement to keep the medicine in its original, tightly closed container and out of the reach and sight of children.


Disposal Instructions

Unused or expired Closol must be disposed of according to local pharmaceutical waste regulations. The medicine should not be flushed down the toilet or poured down a sink. Where drug take-back programs are unavailable, the product may be discarded in the household trash after mixing it with an undesirable substance, such as used coffee grounds, and placing the mixture in a sealed container.

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

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