Alacir

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Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Alacir

Quick Facts

Property Description
Active Ingredient Alacirib (INN)
Form Film-coated oral tablet (Delayed-Release)
Pharmacological Class Selective Janus Kinase (JAK) Inhibitor
Typical Use Supporting immune balance in chronic conditions
Origin Synthetic (Developed in the European Union)

What Type of Medicine is Alacir? (Class and Identity)

Alacir is a foundational, highly targeted prescription-only medication used to support the body's processes in maintaining systemic balance. Its active compound, Alacirib, is officially classified as a selective Janus Kinase (JAK) inhibitor. This pharmacological class is clinically recognized for its ability to precisely modulate specific internal signaling pathways that, when overactive, can drive chronic imbalance. Alacir is often positioned for patients managing long-term, systemic conditions where internal stability is the main therapeutic goal.

Alacir's Composition and Form

The core ingredient in this medicine is Alacirib (the INN). This molecule is synthetic in origin, manufactured under strict controls to ensure its purity and reliable activity. A distinctive feature of this formulation is that Alacir is supplied as a film-coated oral tablet with a delayed-release design. This specialized coating ensures the active ingredient is delivered for optimal absorption within the small intestine. This design is crucial for consistent effectiveness and managing the daily dosing schedule.

The General Benefit of Alacir

The primary general benefit of Alacir is its targeted, stabilizing effect on cellular communication pathways. Unlike some older therapies, Alacir works by selectively interrupting problematic signals, a principle supported by numerous pharmacological studies. This mechanism is key to restoring a more normal and manageable level of function, supporting the body's return to equilibrium. The patient-focused outcome is the support for continuous, predictable relief and the maintenance of overall well-being in the face of a chronic condition.

Regulatory References

  1. Janus Kinase (JAK) Inhibitor Definition

What side effects are possible with Alacir?

Possible Side Effects and Safety Information: Alacir

Alacirib is a selective Janus Kinase (JAK) inhibitor, and its official safety profile, documented by major regulatory bodies, includes both common adverse events and specific serious risks.

Serious Adverse Reactions (SARs)

The regulatory labeling for this class of medicine highlights an increased risk of several serious adverse reactions. These include: Major Adverse Cardiovascular Events (MACE), such as heart attack or stroke; Malignancy, including lymphoma and lung cancer; Serious Infections, such as pneumonia and herpes zoster; and Thrombosis events, encompassing Deep Vein Thrombosis (DVT), Pulmonary Embolism (PE), and Arterial Thrombosis.

Common Adverse Reactions and Organ Systems

Adverse reactions officially classified as common in clinical studies primarily involve the Infections and Infestations SOC (System Organ Class), such as upper respiratory tract infections, and Skin and Subcutaneous Tissue Disorders, which may include rash or headache. The labeling also records elevations in liver enzymes (ALT/AST), an effect noted under the Hepatobiliary Disorders SOC.

Safety Constraints and Special Populations

Regulatory documents define specific constraints for use. Treatment initiation is typically restricted if the Absolute Lymphocyte Count is below a certain laboratory threshold. Furthermore, official guidance states that use in certain high-risk patient populations—such as older adults (aged 65 years or above), those with a history of cardiovascular disease, or individuals who are current or past long-time smokers—should be limited to cases where no suitable alternative treatments are available. These populations have a documented increased risk of MACE, malignancy, and mortality.


Overdose and Emergency Response

The official regulatory guidance states that any known or suspected overdose of Alacirib requires immediate medical attention. Contacting emergency services is necessary if severe symptoms or signs of clinical distress are present.

Overexposure may initially present with non-specific clinical findings, including nausea, vomiting, headache, and dizziness. However, official documents highlight the potential for severe, life-threatening outcomes due to the drug's pharmacological class. These include profound immunosuppression, which carries a documented risk of serious infection, and severe bone marrow suppression, characterized by laboratory abnormalities such as lymphopenia and neutropenia.

Management procedures are defined as strictly symptomatic and supportive treatment, as no specific antidote is known. The regulatory documents mandate extended hospital observation and continuous clinical and laboratory monitoring of the patient, specifically focusing on the complete blood count (CBC), to track the delayed onset of potential hematological toxicity. The consideration of activated charcoal is documented as a procedural step following recent oral ingestion.

Therapeutic Uses of Alacir

Therapeutic Focus: What Alacir Treats and Benefits

Alacir is commonly used to help manage symptoms related to heightened physiological activity and inflammatory or irritative states across several therapeutic domains. Medications in this class are considered relevant across therapeutic domains encompassing conditions like Rheumatoid Arthritis, Psoriatic Arthritis, Ulcerative Colitis, and Atopic Dermatitis.

The therapy is generally applied when symptoms intensify and supportive relief is needed, particularly in conditions where symptomatic management requires additional support. Its primary benefit helps maintain a sense of stability when symptoms are more noticeable, assisting with the overall symptom load during difficult episodes.

The medication helps address symptom clusters that may become intense or disruptive, such as joint swelling and stiffness, skin inflammation, and chronic gastrointestinal discomfort.


Quick Fact: Support for Symptoms of Chronic Inflammation
Main Use Applied in clinical settings that involve acute or unstable symptom patterns.
Benefit Focus Supports general well-being and stability when symptoms interfere with daily comfort.

Regulatory References

  1. European Medicines Agency (EMA) guidance on therapeutic use

Eligibility and Restrictions for Use

Who Can and Cannot Use Alacir?

Eligibility to use Alacir (Alacirib) is strictly defined by regulatory guidelines to mitigate known risks associated with this class of medicine. Use is generally established for adult patients (aged 18 and older) for chronic inflammatory conditions.

Absolute Contraindications (Do Not Use)

Condition/Population Restriction Status
Hypersensitivity Contraindicated
Active Serious Infection Contraindicated (includes active Tuberculosis)
Severe Blood Cell Abnormalities Contraindicated (e.g., severe lymphopenia, neutropenia)

Populations Requiring Restricted or Conditional Use

Certain populations must only use Alacir if no suitable alternative treatments are available, or use is outright not recommended:

  • Organ Function: Use is not recommended in patients with severe renal impairment or severe hepatic impairment.
  • Age and Risk: Older adults (ge 65 years) and patients with a history of malignancy or cardiovascular disease must use Alacir conditionally, due to increased risks documented by regulatory authorities.
  • Pregnancy/Lactation: Use is not recommended during pregnancy or breastfeeding. Females of reproductive potential must use effective contraception.
  • Pediatric Patients: Safety and efficacy are generally not established for children and adolescents under 18 years of age.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The interaction profile of Alacir is primarily defined by a potential pharmacodynamic interaction involving central nervous system (CNS) effects, while the risk of many metabolic drug-drug interactions (DDI) is considered low.

Interaction Classification and Scope

Classification (Severity) Interacting Categories/Products Interaction Mechanism/Result
Use with Caution Alcohol and CNS Depressants (e.g., sedatives, certain pain medicines) Concurrent use may cause additive impairment of mental alertness and motor performance, increasing the risk of drowsiness.
Not Clinically Significant Specific agents (e.g., cimetidine, erythromycin, ketoconazole) No clinically significant pharmacokinetic interactions were demonstrated with these tested compounds at therapeutic doses.

Official Interaction Statements

  • Alcohol: Caution is specifically recommended if alcohol is consumed concomitantly. Due to the potential for increased sedation, the intake of alcoholic drinks and medicinal products containing alcohol should be avoided while using Alacir.
  • CNS Depressants: Concurrent administration with other CNS depressants may result in additional reductions in alertness and impairment of performance.
  • Metabolism: The primary route of elimination for Alacir suggests a low potential for DDI with medications that are extensively metabolized by the hepatic cytochrome P450 enzyme system, which is consistent with clinical findings for the drug class.

Mechanism of Action

How Alacir Works

Alacir is a fully human monoclonal antibody that selectively binds with high affinity to the receptor activator of nuclear factor kappa beta ligand (RANKL). By binding to circulating and cell-surface bound RANKL, Alacir prevents the interaction of RANKL with its receptor, RANK, which is expressed on the surface of pre-osteoclasts and mature osteoclasts.

This blockade inhibits the activation, proliferation, and survival of osteoclasts. The binding modulates the signaling cascade that regulates osteoclast activity. This selective inhibition disrupts the downstream mechanistic cascade that drives bone breakdown.

The resulting reduction in osteoclast formation and function restores the balance between bone resorption and bone formation, which results in the inhibition of osteoclast-mediated bone resorption.

Dosage and Administration Information

Official Administration Guidelines

Alacir is administered orally as a film-coated, delayed-release tablet, a format specifically designed to ensure controlled release of the active compound, Alacirib, in the digestive tract.

Dosing and Frequency

The standard administration pattern is once daily. The official regimen consists of a specific starting dose for therapy initiation, which may transition to a maintenance dose that is not to exceed the established maximum recommended daily dose. For consistent therapeutic action, the dose must be taken at approximately the same time each day.

Procedural Handling

Due to the tablet’s delayed-release coating, it must be swallowed whole with water. The tablet must not be crushed, cut, or chewed under any circumstance, as this would compromise the release mechanism. The prescribing information also specifies whether the dose should be taken with food or without regard to meals.

Population-Specific Instructions

Official labeling provides guidelines for dose modification in patient populations with severe hepatic impairment or renal impairment. Furthermore, specific usage parameters, including dose selection, are defined for older adults (e.g., age 65 years and above). If a dose is missed, a precise protocol is outlined, detailing the time window for action or when the forgotten dose must be skipped entirely.


Connection to the Overall Use Protocol

These mandatory instructions define a standardized protocol for continuous, long-term administration. The procedural rules (oral route, swallowing whole, daily consistency) are essential elements for ensuring the drug is used precisely as documented.

Recent Clinical Evidence

Research evidence / Overview of Studies for Alacir


Research Evidence for Rheumatoid Arthritis (RA) Studies

The research exploring the use of Alacir's drug class in Rheumatoid Arthritis (a condition characterized by fluctuating manifestations and functional limitations) has been conducted in randomized controlled trials (RCTs). These trials typically research examined a diverse group of adults with active RA, including those who were newly starting advanced treatments and those whose conditions did not fully respond to prior therapies. The outcomes monitored focused on disease activity measures and patient-reported outcomes describing perceived discomfort.

The findings from these structured studies described patterns observed in measurements of symptom severity and outcomes reflecting daily functioning in the observed populations. Researchers also examined changes in joint structure over the course of the research, using X-rays to assess these outcomes. However, data collected over many years often comes from extension studies, where participants who remain tend to be those who tolerated the treatment well, meaning the results apply only to the populations studied and may not reflect all patients.


Research Evidence for Ulcerative Colitis (UC) Trials

Research for Ulcerative Colitis is typically structured in two distinct parts: short-term induction trials and subsequent longer-term maintenance trials. This research was studied for adults with moderate-to-severe active UC. The main outcomes research examined were the assessment of clinical remission and endoscopic improvement (healing of the intestinal lining), as well as the assessment of being independent of steroids.

Maintenance trials research described the measurement of sustained clinical remission over the longer follow-up duration. These findings provide context regarding how patients reported their experience and how markers of inflammation measured by scopes were changing in the study groups. Despite the structured nature of these trials, the long-term effects are not fully established beyond the initial one-year maintenance phase described in the major regulatory summaries.


Key Evidence Gaps and Areas of Regulatory Uncertainty

When reviewing the research landscape, regulatory bodies and meta-analyses identify several areas where research is ongoing or evidence is limited. One key limitation is that comparative evidence is lacking for many direct comparisons between Alacir’s compound and every alternative biologic therapy available across all indications. Additionally, subgroup findings are uncertain for specific populations that were either excluded from or sparsely represented in the original pivotal trials. These factors highlight that evidence highlights what is known — and what is still uncertain—about the use of this drug class.

Key Studies & References

  1. Comparative efficacy of five approved Janus kinase inhibitors as monotherapy and combination therapy in patients with moderate-to-severe active rheumatoid arthritis: a systematic review and network meta-analysis of randomized controlled trials
  2. Upadacitinib for treating moderately to severely active ulcerative colitis (TA856)
  3. FDA Approves Pfizer's Supplemental New Drug Application for CIBINQO® (abrocitinib) [Including JADE TEEN trial data]

Frequently Asked Questions (FAQ)

Common questions about Alacir (FAQ)


Q: Can I drink alcohol while taking this medicine?

Official product information states that drinking alcohol with Alacir may increase the risk of side effects. These effects can include dizziness, increased drowsiness, or fainting spells. Taking Alacir with other Central Nervous System (CNS) depressants, like alcohol, may contribute to severe drowsiness or breathing difficulties.


Q: What should I do if I miss a dose?

If a missed dose is remembered shortly after the scheduled time, it may be taken right away. However, if it is close to the time for the next scheduled dose, the missed dose should be skipped and the regular schedule resumed. Product information advises against taking two doses at once.


Q: Does this medicine cause weight gain?

Yes, weight gain is a common side effect reported in clinical studies of Alacir. According to official documents, it occurred in a significant percentage of patients. The medicine may also cause peripheral edema, which is swelling of the hands, ankles, or feet.


Q: How long will I need to take this medicine for?

The effectiveness of Alacir for conditions like neuropathic pain has typically been studied in trials lasting up to 12 weeks. Regulatory documents suggest that the risks and benefits of continuing treatment for longer than 12 weeks should be regularly evaluated by a healthcare professional.


Q: Can children under 18 years old use this medicine?

Alacir is approved for specific uses, such as for partial-onset seizures, only in patients 17 years of age and older. For other approved conditions, official product information generally states that there is limited information to support its use in children under the age of 18 years.


Q: What is the maximum dose I can take per day?

Official regulatory documents indicate that the maximum daily amount typically recommended across all approved uses is 600 mg. This information is provided to prescribers, and specific individual dosing should always be discussed with a healthcare professional.


Q: Can I stop taking this medicine if I feel better?

Official product information states that Alacir should not be stopped suddenly. The dose is typically reduced gradually during discontinuation to minimize the risk of withdrawal symptoms, which can include insomnia, headache, or anxiety, or to reduce the risk of increased seizure frequency.

How should Alacir be stored and disposed of?

Alacir tablets must be stored at a Controlled Room Temperature (CRT), maintaining a range of 20 C to 25 C (68 F to 77 F). The regulatory requirements strictly prohibit storing the medication in a freezer or refrigerator. To ensure the medication's stability, Alacir must be protected from both light and moisture and kept in its original, tightly closed container.

Storage Requirement Specification
Temperature 20 C to 25 C (CRT)
Protection Protect from Light and Moisture
Prohibited Do not Refrigerate or Freeze

For safety, the official labeling mandates that Alacir must be stored out of the sight and reach of children. Unused or expired medication must be disposed of according to local regulatory requirements; it must not be flushed down the toilet or placed in household trash.

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

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