Klismacort

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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 Klismacort

What Type of Medicine is Klismacort?

Klismacort is a prescription-only medication primarily defined by its active pharmaceutical ingredient, Prednisolone Acetate. This compound is classified within the pharmacological family of Glucocorticoids, which is a subset of corticosteroids. Glucocorticoids are synthetic agents structured similarly to the natural hormone cortisol, which the body produces to regulate inflammation. This classification establishes the drug's fundamental role as an agent designed to modulate immune and inflammatory responses locally. This type of formulation is utilized for its role in managing specific acute inflammatory episodes.


Klismacort's Formulation and Primary Component

Klismacort is produced as a sterile ophthalmic suspension, meaning it is formulated as eye drops intended strictly for topical ophthalmic administration—applied externally to the eye surface. The formulation ensures the active substance, Prednisolone Acetate, is finely dispersed within an aqueous suspension vehicle, giving it an opaque appearance. This suspension form is an approved delivery method for use on the eye. This delivery method facilitates the direct, localized application of the anti-inflammatory agent to the affected area. The suspension form, compared to clear solutions, is often used when a longer retention time on the ocular surface is desired, a characteristic that differentiates its therapeutic positioning.


What is the General Benefit of Klismacort?

The general benefit of Klismacort stems from its primary function as an anti-inflammatory agent and an immunosuppressive agent. It works by intervening in the body's inflammatory cascade, for instance, to calm the swelling that can follow ocular procedures. Corticosteroids, as a class, are used to suppress the manifestations of inflammation. The medication's purpose is to suppress the excessive inflammatory response, generally helping to reduce associated symptoms such as pronounced redness and swelling in the affected area.

Regulatory References

  1. NIH: Prednisolone Acetate Ophthalmic Suspension

What side effects are possible with Klismacort?

Possible Side Effects and Safety Information

Klismacort contains a corticosteroid and is administered as a retention enema, a route that primarily acts locally in the rectum and lower colon. However, some systemic absorption of the active ingredient is possible, particularly when the lining of the colon is inflamed or with prolonged use. The potential adverse reactions are therefore classified into those that are local at the site of administration and those that may be systemic.


Adverse Reactions

Common (Local) Reactions: The most frequently reported adverse effects include discomfort, irritation, burning, or pain in the rectal area. These symptoms are generally mild and temporary.

Systemic Reactions (Less Common): Because the medication is absorbed into the bloodstream, prolonged or high-dose use carries the risks associated with oral corticosteroids. These effects relate to the body's various organ systems and include:

  • Endocrine and Metabolic: Suppression of the hypothalamic-pituitary-adrenal (HPA) axis, fluid retention, weight gain, or alterations in blood sugar control.
  • Gastrointestinal: Abdominal discomfort or pain.
  • Nervous System and Psychiatric: Headaches, dizziness, insomnia, or mood changes, including anxiety or depression.
  • Dermatologic: Thinning, fragility, or bruising of the skin.

Safety Considerations and Restrictions

Contraindications: This type of medication should not be used in the presence of local infections (such as fungal or viral), specific rectal conditions like an abscess or impending perforation, or a known hypersensitivity to any of the ingredients.

Serious Adverse Reactions: Clinically significant reactions are rare but may include serious infections (as corticosteroids can mask symptoms), or in long-term use, the development of cataracts or glaucoma in the eyes, or osteoporosis (weakened bones). Infants born to mothers who received substantial doses during pregnancy should be monitored for hypoadrenalism.

Safety Monitoring: Patients using this treatment, especially for extended periods, should be monitored by their healthcare provider for signs of systemic effects, including blood pressure, blood glucose levels, and HPA axis function. Abrupt discontinuation after prolonged use is not recommended and a dose-tapering schedule is typically required to avoid withdrawal symptoms.

Overdose and Emergency Response

Klismacort Overdose and when to seek help

The official regulatory profile for Klismacort (Prednisolone Acetate Ophthalmic Suspension) provides information on the potential for acute overexposure and defines the conditions under which medical help is mandated. This profile is structured around the inherent low systemic risk associated with this topical glucocorticoid.


Overdose Scope

Category Official Regulatory Documentation
Documented overdose presentations Acute overdosage via the ophthalmic route is documented as unlikely to occur. Overdosage is officially stated not to ordinarily cause acute problems at the site of application or systemically.
Dose-related or exposure-related factors The only exposure factor explicitly addressed in the overdose section is accidental ingestion of the suspension.
Physiological systems affected No specific acute systemic manifestations are explicitly described in the context of acute overdosage.
Emergency-response statements Emergency supportive management for accidental ingestion is to drink fluids to dilute the product.
When immediate medical help is required Urgent attention is mandated for cases involving accidental ingestion; the label requires seeking medical attention immediately following this event.

Official Overdose Statements

  • Acute overdosage is documented as unlikely to occur via the intended route.
  • Overdosage is officially stated to not ordinarily cause acute problems.
  • In the event of accidental ingestion, the required procedural instruction is to drink fluids to dilute the product.
  • Medical attention is mandated to be sought when accidental ingestion of the suspension occurs.

Therapeutic Uses of Klismacort

What Klismacort Treats: Main Uses and Benefits

Klismacort (Prednisolone Acetate Ophthalmic Suspension) is commonly used to help with symptomatic relief by addressing symptoms related to inflammatory or irritative states and their associated manifestations. Its application is considered relevant in conditions involving inflammatory or irritative processes in the anterior part of the eye, applied in clinical settings that involve acute or unstable symptom patterns. This use is well-established for controlling inflammatory responses.


Therapeutic Focus and Relief

Klismacort plays a role in managing acute flare-ups of conditions presenting with acute episodes of inflammation, such as anterior uveitis, iritis, cyclitis, and specific, non-infectious forms of keratitis. It is also commonly used to manage the expected inflammatory response following specific ocular surgeries, like cataract extraction, and to address inflammation resulting from particular ocular injuries. By addressing symptom clusters that may become intense or disruptive, the medication contributes to easing the overall symptom load and supports the patient during difficult episodes by easing distress. It is commonly used when short-term symptomatic assistance is needed.

“The primary purpose is to provide support that helps ease the overall symptom burden by managing symptoms that interfere with daily comfort.”

Key Symptom Clusters Addressed

The medication is relevant for easing pronounced discomforts, including severe eye redness, significant tissue swelling, and symptoms that create noticeable physiological strain, like photophobia (light sensitivity) and pain. By offering symptomatic relief, Klismacort assists with maintaining functional stability when symptoms are more noticeable.


Quick Fact: Context of Use for Inflammation Klismacort is relevant for conditions requiring additional symptomatic support to manage heightened physiological activity that involves swelling, redness, and pain in the anterior part of the eye.

Eligibility and Restrictions for Use

Klismacort's population eligibility is formally defined by official government regulatory documentation, specifying absolute prohibitions and conditions for restricted use.

Contraindicated Populations (Absolute Non-Eligibility)

Klismacort is absolutely prohibited for use in individuals with known or suspected hypersensitivity to any of its components or to other corticosteroids. It is also contraindicated for patients with specific ocular infections:

  • Most viral diseases of the cornea and conjunctiva (e.g., epithelial herpes simplex keratitis, vaccinia, varicella).
  • Mycobacterial infection of the eye or fungal diseases of ocular structures.
  • Acute untreated purulent ocular infections.

Condition-Based and Physiological Restrictions

Classification Official Regulatory Rule
Conditional Use (Comorbidity) Use requires caution in patients with glaucoma or thinning of the cornea/sclera. Employment in patients with a history of Herpes Simplex requires great caution.
Age-Group Eligibility Use is established in Pediatric, Adult, and Geriatric populations (US FDA labeling).
Pregnancy/Lactation Status Use during pregnancy is permitted only if the potential benefit justifies the potential risk. Nursing mothers must make a decision to discontinue nursing or discontinue the drug.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official interaction profile for Klismacort (Prednisolone Acetate Ophthalmic Suspension) focuses primarily on the potential for systemic exposure to its active ingredient, a pharmacokinetic risk associated with the topical delivery route.

Documented Interaction Patterns

Classification Interacting Substances/Context
Metabolic Interaction CYP3A inhibitors (Substances that inhibit the Cytochrome P450 3A enzyme).
Formal Restriction Cobicistat-containing products and other potent CYP3A inhibitors.
Exposure Outcome Expected increase in the risk of systemic side-effects due to elevated prednisolone exposure.

Co-treatment with strong CYP3A inhibitors, including cobicistat-containing products, is a formally restricted combination that should be avoided unless the clinical benefit is judged to outweigh the documented risk of increased systemic side-effects. This restriction is detailed in regulatory documentation and requires patient monitoring if the co-administration cannot be excluded. The interaction is classified as a pharmacokinetic event that reduces the clearance of the corticosteroid.

Official labeling also includes specific population constraints: the risk of systemic adverse effects, such as adrenal suppression or Cushing's syndrome, is noted to be more relevant for very young children when the ophthalmic suspension is used very frequently. No mandatory timing-based separation rules or documented interactions with food, alcohol, or herbal products are present in the official regulatory prescribing information.

Mechanism of Action

Klismacort, which contains hydrocortisone acetate, functions as an agonist at intracellular Glucocorticoid Receptors (GR) within the rectal mucosal cells.


Molecular and Intracellular Pathways

Following passive diffusion across the cell membrane, the hydrocortisone moiety binds to the cytoplasmic GR. This ligand-receptor complex translocates into the nucleus, where it interacts with Glucocorticoid Response Elements (GREs) in the promoter regions of target genes. This binding event modulates gene transcription, primarily upregulating the expression of anti-inflammatory proteins, such as Annexin A1 (Lipocortin-1), and downregulating the expression of pro-inflammatory factors, including cyclooxygenase-2 (COX-2), cytokines (e.g., IL-6, TNF-alpha), and adhesion molecules.


Downstream Cascades and System-Level Effects

The increase in Annexin A1 expression inhibits cytosolic phospholipase A2 ( cPLA2) activity, preventing the release of arachidonic acid and thereby blocking the synthesis of potent pro-inflammatory eicosanoids (prostaglandins and leukotrienes). The decreased expression of pro-inflammatory cytokines and COX-2 further attenuates the local cellular immune response. This dual genomic and non-genomic modulation of cellular processes results in a localized reduction of capillary permeability and a suppression of leukocyte migration to the targeted colonic tissue, leading to a system-level physiological modulation of local tissue activation.

Dosage and Administration Information

Klismacort is a corticosteroid medication that is typically available as a rectal capsule or foam containing the active ingredient prednisolone or budesonide for local application within the rectum.

General Instructions for Rectal Application

Always follow the dosing instructions provided by your healthcare provider or as described in the official product leaflet. This medication is for rectal use only and must not be taken by mouth.

Step Action Key Detail
1. Preparation Wash your hands thoroughly. If using a foam, shake the canister vigorously for 10-15 seconds and prepare the applicator as instructed. If using a capsule, ensure you are ready for insertion. For foam, use at room temperature. For capsules, no prior shaking is needed.
2. Positioning For best administration, it is often recommended to lie on your left side with your left leg stretched out and your right knee bent toward your chest. Alternatively, you may stand with one foot raised on a chair. Lying on the left side helps the medication reach the intended area.
3. Insertion Gently insert the applicator tip or capsule into the rectum as far as is comfortable, following the direction of your navel. Do not force the applicator. If using foam, depress the pump fully for a single metered dose and hold for 10–15 seconds before removal. For a capsule, push it gently but firmly into the rectum. Use a lubricant (like petroleum jelly) on the tip if needed. Stop and contact a healthcare professional if you experience pain or bleeding.
4. Retention Remain in the same position for at least a few minutes, or as long as possible, to ensure the medicine is retained. If using an evening dose (for some formulations), try not to empty your bowels until the next morning. Retention allows the active ingredient to be properly absorbed by the rectal and lower colon tissue.
5. After Use Immediately remove and safely discard the used applicator (if applicable) and wash your hands. Do not reuse applicators.

Important Note: It is generally best to empty your bowels before using a rectal corticosteroid. If you miss a dose, use it as soon as you remember, unless it is almost time for your next scheduled dose, in which case you should skip the missed dose and resume your regular schedule. Do not use a double dose to make up for a missed one.

Recent Clinical Evidence

Research Evidence: Overview of Studies

Efficacy Evaluations of Drug X and Compound Z Combination

Research has explored the potential for the combination of Drug X and Compound Z to be relevant to chronic inflammatory pain. This evaluation focused primarily on adults with osteoarthritis and rheumatoid arthritis.

  • Pain Score Reporting: Multiple cohort studies have examined changes in patient-reported pain scores within two weeks of initiating the combination therapy. These reports typically used the Visual Analog Scale (VAS) as the primary endpoint.
  • Tolerability and Adherence: Studies assessed patient adherence and the incidence of adverse events. Patient retention rates for the combination regimen were evaluated over a six-month period, which were often examined against Drug X monotherapy.
  • Onset of Action: In a large Randomized Controlled Trial (RCT), the combination therapy was evaluated for the time to onset of change in pain levels compared to Drug X monotherapy.

Pharmacological Studies

Studies have examined the pharmacological interaction between Drug X and Compound Z.

  • Enzyme Evaluation: In-vitro studies examined Compound Z's effects in relevant systems.
  • Pharmacokinetic Profiles: Research explored the pharmacokinetic profile of Drug X when administered with Compound Z.

Specific Population Research

Early-stage research is exploring the potential relevance of Compound Z to neuropathic pain, but further research is required.

  • Neuropathic Pain: Small Phase I/II trials have been initiated to explore the safety and preliminary signals of Compound Z alone or combined with Drug X in patients with diabetic peripheral neuropathy.
  • Tolerability in Adults: The tolerability profile was examined in most adult patients. Studies did not include individuals with severe hepatic impairment.
  • Regimen in Insufficient Responders: A study suggests this combined regimen was evaluated in patient groups that did not respond sufficiently to prior monotherapy.

Frequently Asked Questions (FAQ)

Common questions about Klismacort (FAQ)

Q: What is the main purpose of Klismacort?

According to official product information, Klismacort (prednisolone rectal foam) is indicated for the treatment of proctitis and ulcerative colitis. These are types of inflammation that specifically affect the rectum and the lower part of the colon.


Q: What are the official clinical indications for Klismacort?

The official clinical indications listed in regulatory documents for the rectal foam formulation are proctitis and ulcerative colitis limited to the rectum and sigmoid colon. This means the medication is specifically approved to treat those particular inflammatory conditions in the lower bowel.


Q: Is Klismacort used for any other condition besides its primary indication?

Official product information for the rectal formulation lists proctitis and ulcerative colitis as its specific approved uses. Regulatory documents restrict the described use to these specific clinical indications.


Q: Is Klismacort safe to use during pregnancy?

Regulatory documents state that there is inadequate evidence to establish the safety of the active ingredient in human pregnancy. For this reason, official labels indicate that the decision to use the product requires a medical judgment to ensure that the potential benefit is considered to outweigh the potential risks to the developing fetus.


Q: Can Klismacort be used during breastfeeding?

Due to the potential for serious adverse reactions in nursing infants if the active ingredient is absorbed, official patient labeling notes that a medical decision must be made to either discontinue nursing or discontinue the drug, considering the importance of the medication to the mother.


Q: Can I use Klismacort if I have diabetes?

Corticosteroids, the class of medicine Klismacort belongs to, are known to potentially increase the glucose (sugar) levels in the blood or urine. Because of this effect, official warnings note that existing diabetes may require monitoring or adjustments to diabetes medication while using the product.


Q: Do children or teenagers use Klismacort?

The rectal foam formulation of prednisolone is generally not recommended for use in children or adolescents (i.e., those under 18 years old). Official warnings also note that steroids as a class can potentially affect growth in children.


Q: Is Klismacort a short-term or long-term treatment option?

Regulatory documents advise that prolonged continuous use is undesirable for rectal corticosteroids. The duration of treatment is typically limited and determined by the prescribing physician based on the patient's condition and response.


Q: How long can I continue to use Klismacort before needing a break?

The initial recommended treatment duration for the rectal foam is typically two weeks. While this period may be extended for a short time depending on the patient’s response, official product information indicates that prolonged continuous use is generally not recommended.


Q: Are there common signs that Klismacort is not working for me?

For the ophthalmic (eye drop) formulation, official patient information states that consultation with a physician is advised if inflammation or pain persists longer than 48 hours or becomes aggravated. This indicates conditions under which medical guidance is necessary.


Q: Does Klismacort interact with common pain relievers like ibuprofen?

The official drug interaction profile focuses on CYP3A inhibitors, but notes that some NSAIDs (Nonsteroidal Anti-Inflammatory Drugs), like Aspirin, have documented interactions with systemically absorbed corticosteroids. If systemic absorption occurs, such a combination may require patient monitoring.


Q: What should I do if I experience an unexpected reaction to Klismacort?

Official patient information for the ophthalmic formulation indicates that discontinuation and consultation with a physician are necessary if inflammation or pain persists or becomes aggravated, or if new or worsening side effects occur.


Q: What information should I provide to my doctor before starting Klismacort?

Regulatory warnings indicate that a healthcare provider should be informed of pre-existing conditions that are relevant to corticosteroid use. This includes conditions like fungal infections, diabetes, and certain bowel conditions such as an obstruction.


Q: Can I use Klismacort if I have other pre-existing conditions (e.g., kidney disease)?

The label for the rectal foam formulation advises caution in patients with scleroderma (systemic sclerosis). This is due to the potential risk of scleroderma renal crisis, which is why official safety measures require routine checking of blood pressure and kidney function.


Q: How is the safety profile of Klismacort described in official documents?

Official documents describe the safety profile by classifying adverse effects into two main types. These are local side effects at the application site and the possibility of systemic effects—such as HPA axis suppression—which may occur with prolonged or extensive use.


Q: What happens if Klismacort gets on my skin or clothing?

The rectal foam contains specific inactive ingredients, such as cetostearyl alcohol and sorbic acid. Official warnings note that these excipients may cause local skin reactions, such as contact dermatitis, if they come into contact with the skin.


Q: Can I drive or operate machinery while using Klismacort?

Official adverse reaction reports for the ophthalmic formulation note that visual disturbances, such as blurred vision, have been reported as a potential side effect. Patients experiencing such effects are advised to exercise caution.


Q: Are there different strengths or formulations of Klismacort?

Yes, regulatory approvals confirm that the active ingredient in Klismacort is available in different strengths and in different administration types. These include different formulations such as rectal foam, ophthalmic suspension, enemas, or tablets.


Q: Does Klismacort have a black box warning in the US?

The specific prednisolone acetate ophthalmic suspensions, which share the same active ingredient, do not carry a Black Box Warning in US FDA regulatory labeling. A Black Box Warning is the strongest warning that the FDA requires.


Q: What should be done if too much Klismacort is accidentally used?

For the ophthalmic suspension, regulatory documentation states that accidental overdosage will not ordinarily cause acute problems. If the product is accidentally ingested, official documentation notes that drinking fluids to dilute the product is typically described as a general measure.

How should Klismacort be stored and disposed of?

Storage and Disposal of Klismacort (Prednisolone Acetate Ophthalmic Suspension)

The official storage and disposal guidelines for Klismacort are based on maintaining the product's stability and ensuring proper handling.


️ Storage Requirements

Klismacort must be stored at controlled room temperature, specifically between 20 C and 25 C (68 F and 77 F). It is essential to not freeze the ophthalmic suspension. The container must be kept tightly closed in the original container and must be shaken well before use.

As a mandatory safety measure, the medicine must be kept out of the reach of children.


️ Disposal Instructions

Unused or expired Klismacort must not be poured down the drain or disposed of in household trash. Disposal must be managed through an approved pharmaceutical take-back program or by following the instructions of a local waste disposal company, adhering to local regulations for pharmaceutical waste.

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

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