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Яквинус

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Яквинус

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Medically reviewed

Marina Burgos

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.

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Overview of Яквинус

What is Яквинус? (Tofacitinib)

Property Description
Active Ingredient Tofacitinib
Form Oral Tablet (Immediate and Extended-Release) / Oral Solution
Pharmacological Class Janus Kinase (JAK) Inhibitor
General Purpose Disease Modification / Anti-inflammatory
Origin Targeted Synthetic Small Molecule

What is the Core Identity of Яквинус?

Яквинус is the brand name for a prescription-only medication containing the active ingredient Tofacitinib. This medicine is classified as a targeted synthetic small molecule, a type of drug that has been clinically recognized for its ability to modify the course of chronic inflammatory diseases. Tofacitinib is often formulated as Tofacitinib citrate, which provides the active compound for oral delivery.

Its key differentiating feature is its oral form, available as immediate-release and extended-release tablets, and a solution for adult and pediatric use. This contrasts with large, protein-based biologic drugs, which typically require injection or infusion, offering a flexible route of administration.

What Type of Medicine is Яквинус?

Яквинус belongs to the class of drugs known as Janus Kinase (JAK) Inhibitors, placing it within the larger group of Disease-Modifying Antirheumatic Drugs (DMARDs). This classification highlights its role as a targeted therapy rather than a broad immune suppressant.

JAK inhibitors function by acting on specific signaling pathways inside immune cells, giving them a focused role in regulating the immune system. Tofacitinib works by inhibiting JAK enzymes to disrupt inflammatory signaling. This specific cellular action is what enables the medicine to target the root cause of chronic inflammation.

What is the General Purpose of Яквинус?

The overall purpose of Яквинус is to modify the underlying activity of the disease by reducing the excessive, destructive inflammation that characterizes various autoimmune conditions. By successfully interrupting the signals that perpetuate chronic inflammation, the drug aims to reduce symptoms and improve a patient’s overall physical function and long-term condition management.

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What side effects are possible with Яквинус?

Possible Side Effects and Safety Information

Яквинус (Tofacitinib) is associated with several serious risks, as outlined in official government regulatory warnings.

Serious and Clinically Significant Risks

The most serious documented adverse reactions include Serious Infections, Mortality (including all-cause and sudden cardiovascular death), Malignancy (including lymphoma, lung cancer, and Non-Melanoma Skin Cancers), Major Adverse Cardiovascular Events (MACE) (such as myocardial infarction and stroke), and Thrombosis (Pulmonary Embolism, Deep Venous Thrombosis, and Arterial Thrombosis). Some of these events have been fatal. Serious infections can involve bacterial, viral (e.g., Herpes Zoster), fungal, and opportunistic pathogens, including active tuberculosis. Gastrointestinal perforations have also been reported.

Common Adverse Reactions

Commonly reported side effects (affecting up to 1 in 10 people) typically involve infections and laboratory changes. These include upper respiratory tract infection, nasopharyngitis, headache, diarrhea, and elevated cholesterol levels.

Safety Considerations and Restrictions

Safety recommendations include restrictions based on patient risk factors and dose. The 10 mg twice daily dose is associated with higher rates of serious adverse events, including mortality and thrombosis, particularly in patients aged 50 years or older with at least one cardiovascular risk factor (especially current or past smokers). Use in patients aged 65 years or above is generally recommended only if no suitable alternative treatment is available.

The drug is contraindicated in patients with active serious infection or active tuberculosis. Treatment requires laboratory monitoring of lymphocytes, neutrophils, hemoglobin, liver enzymes, and lipids, and interruption may be necessary if certain abnormalities or serious infection occur.

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Overdose and Emergency Response

Overdose and When to Seek Help

Official regulatory information for Яквинус (Tofacitinib) focuses on managing the consequences of high exposure and the urgent recognition of serious outcomes, as no specific antidote is known.

Feature Official Regulatory Statement
Documented Overdose Presentation Management is defined by monitoring for signs and symptoms of adverse reactions [Source: FDA-aligned Prescribing Information].
Serious Outcomes The most serious documented risks, particularly at high-dose exposure, involve the vascular system (thrombosis: pulmonary embolism, DVT) and increased risk of death [Source: FDA Drug Safety Communication].
High-Risk Population Note Increased incidence of severe outcomes was observed in rheumatoid arthritis patients 50 years of age and older with at least one cardiovascular risk factor [Source: FDA Drug Safety Communication].
Supportive Management Supportive treatment is indicated; hemodialysis is noted to have limited value [Source: FDA-aligned Prescribing Information].

When Immediate Medical Help is Required

The regulatory labeling requires patients to seek medical attention immediately upon experiencing symptoms indicative of a blood clot (thrombosis). Such symptoms include sudden shortness of breath, chest pain, or swelling of a leg or arm. Additionally, the official instructions recommend discontinuing the product and promptly evaluating the patient if these severe manifestations occur, and to consider contacting the Poison Help line for further guidance.

The overdose profile is structured entirely around these mandated emergency actions and the specific severe risks documented in government-authorized prescribing information.

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Therapeutic Uses of Яквинус

What Яквинус treats: Main Uses and Benefits

Яквинус is primarily used to manage several chronic inflammatory conditions in adults, including moderately to severely active Rheumatoid Arthritis, active Psoriatic Arthritis, and Ankylosing Spondylitis. It also addresses active Polyarticular Course Juvenile Idiopathic Arthritis in pediatric patients aged two and older. It is commonly used when supportive symptom management is appropriate after patients have not responded adequately to or cannot tolerate other medicines used for these conditions. The medication helps address symptom clusters that may become intense or disruptive, specifically severe joint pain, swelling, and stiffness that interferes with daily functioning.

The medication is also relevant in conditions characterized by periods of heightened symptoms, specifically for moderately to severely active Ulcerative Colitis in adults. Applied in scenarios where additional management of discomfort is required, it assists in addressing symptoms related to inflammatory or irritative states in the digestive tract, which contributes to easing the overall symptom load and helps maintain a sense of stability when symptoms are more noticeable. Across all therapeutic domains, the treatment supports patients during difficult episodes by easing distress and may assist with maintaining functional stability, which is a primary patient-oriented benefit in these chronic conditions.

“This medication is commonly used when symptoms are more noticeable and create noticeable functional strain.”


Quick Fact: Supports Management of Joint Pain and Stiffness Яквинус is commonly used to help with groups of symptoms that may become intense or disruptive, supporting patients during episodes of heightened discomfort to help reduce the impact on routine activities.

Regulatory References

  1. NIH MedlinePlus overview
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Eligibility and Restrictions for Use

Who Can and Cannot Use Яквинус (Tofacitinib)?

Eligibility to use Яквинус is strictly defined by regulatory authorities (FDA/EMA) based on the patient's condition, age, coexisting health issues, and blood test results. This medicine is prescription-only and use is subject to mandatory screening and restrictions.


Populations Eligible for Use

Яквинус is approved for adult patients with conditions like Rheumatoid Arthritis, Psoriatic Arthritis, Ankylosing Spondylitis, and Ulcerative Colitis. It is also approved for pediatric patients aged 2 years and older with specific forms of Juvenile Idiopathic Arthritis. Use in children under 2 years is not established.


Contraindications and Restrictions

Use of Яквинус is formally contraindicated or not recommended for the following populations or conditions, as per official labeling:

  • Active Infections: Patients with serious active infections, including active tuberculosis (TB).
  • Liver Impairment: Patients with severe hepatic impairment (Child-Pugh Class C).
  • Pregnancy/Lactation: Use is not recommended during pregnancy or breastfeeding.
  • Hematologic Status: Treatment must not be initiated if specific low blood counts are present, such as an Absolute Lymphocyte Count below 500 cells/mm^3.
  • Concurrent Therapy: Use in combination with biologic DMARDs or other potent immunosuppressants is not recommended.

Patients aged 65 and older or those with cardiovascular risk factors may only use the medicine if no suitable alternative treatments are available.

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What should I know about interactions with other medicines?

The interaction profile for Яквинус (Tofacitinib) is defined by pharmacokinetic changes and additive pharmacodynamic effects documented in regulatory labeling.

Interaction Type Interacting Agents Official Regulatory Constraint
Additive Immunosuppression Biologic DMARDs; Potent Immunosuppressants (e.g., Azathioprine, Cyclosporine) Not recommended due to an officially documented increased risk of serious infection.
Pharmacokinetic (PK) Inhibition Strong CYP3A4 Inhibitors (e.g., Ketoconazole); Moderate CYP3A4/Strong CYP2C19 Inhibitors (e.g., Fluconazole) Co-administration increases systemic exposure; dosage modification is mandated.
PK Induction Potent CYP3A4 Inducers (e.g., Rifampin) Co-administration is not recommended as it substantially reduces Tofacitinib systemic exposure.
Substance Interaction Grapefruit or Grapefruit Juice Consumption must be avoided as it increases Tofacitinib blood levels.

The official interaction statements mandate specific restrictions to manage risks of altered drug levels and additive immunosuppression. Co-administration with agents such as Rifampin is not recommended due to reduced exposure. Combining with other highly immunosuppressive agents is restricted to manage the additive risk of infection. Furthermore, official labeling requires special consideration for patients with moderate hepatic or renal impairment, as reduced clearance in these populations is documented to increase Tofacitinib systemic exposure. Live Vaccines must be avoided during treatment due to the pharmacodynamic effect of immunosuppression.

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Mechanism of Action

How Яквинус Works

Яквннус (Upadacitinib) functions at the molecular level to modulate intracellular immune signaling. Its primary mechanism involves acting as a selective competitive inhibitor of the Janus Kinase 1 (JAK1) enzyme. The drug achieves this by binding directly to the adenosine-5'-triphosphate (ATP) binding site within the enzyme.

This molecular interaction prevents JAK1 from performing its function of phosphorylating downstream signaling proteins known as STATs (Signal Transducers and Activators of Transcription). Consequently, the unphosphorylated STAT proteins cannot dimerize and enter the cell nucleus. This interruption directly modulates multiple cytokine pathways (such as those for IL-6 and IL-2) that rely on JAK1 for signal transmission.

By suppressing STAT-mediated gene transcription, Яквинус causes a reduction in the synthesis of pro-inflammatory genes and mediators. This cascade influences immune cell activation and proliferation, particularly in lymphocytes, thereby modulating signaling within targeted immune pathways.

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Dosage and Administration Information

How to Use Яквинус

The administration of Яквинус (Tofacitinib) is strictly defined by established guidelines, specifying the approved routes, dosing schedules, and adjustments for proper use. The medicine is classified as an oral therapy, distinguishing it from biologic drugs that require injection. It is available as Immediate-Release (IR) tablets (5 mg and 10 mg), Extended-Release (XR) tablets (11 mg and 22 mg), and an oral solution.


Dosing Frequency and Context

The frequency of use is tied to the formulation:

  • Immediate-Release (IR) tablets are taken twice daily (BID).
  • Extended-Release (XR) tablets are taken once daily (QD).

The medication can be taken with or without food. The XR tablets must be swallowed whole and must not be crushed, split, or chewed, which is essential for the controlled release of the active ingredient.


Labeled Dosing Patterns

Dosing follows two primary patterns:

Indication Context Standard Adult Dose Form/Frequency Duration Pattern
Chronic Maintenance (RA, PsA, AS) 5 mg IR, BID (or 11 mg XR, QD) Long-term
Ulcerative Colitis (Induction) 10 mg IR, BID (or 22 mg XR, QD) Initial 8–16 weeks

Pediatric dosing for conditions like Polyarticular Course Juvenile Idiopathic Arthritis (pcJIA) is determined by weight and is administered twice daily. Furthermore, standard instructions mandate dose reduction—often halving the daily dose—for adults with moderate or severe renal impairment or moderate hepatic impairment. These specific guidelines ensure the medication is used according to the precise parameters established by health authorities.

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Recent Clinical Evidence

Research Evidence: Overview of Studies for Яквинус (Tofacitinib)


Evidence for Use in Inflammatory Joint Conditions

Research exploring the effects of Яквинус was studied for use in inflammatory conditions where symptoms may vary in intensity. The primary evidence comes from short-term and intermediate-term Randomized Controlled Trials (RCTs), where participants receiving the drug were compared against those receiving a placebo (an inactive substance) or sometimes another therapy studied in the trial. These formal trials are supported by longer-term extension studies and observational settings evaluating daily-life functioning in large groups of patients.

  • Rheumatoid Arthritis (RA) Studies

Research examined Яквинус in adult patients with moderately to severely active RA, including those who previously had an inadequate response to traditional treatments like methotrexate or to other targeted therapies like TNF inhibitors. Studies monitored outcomes related to physical discomfort and outcomes reflecting daily functioning or activity level. Findings described patterns observed in the studies, where changes were measured in joint symptom scores (like the ACR criteria) and outcomes reflecting daily functioning or activity level (like the HAQ-DI). Long-term post-marketing studies, particularly in an adult subgroup with pre-existing cardiovascular risk factors, described an observed association between the drug and a higher occurrence of major adverse cardiovascular events (MACE) and malignancies when compared to a TNF inhibitor, meaning results apply only to the populations studied.

Evidence for Use in Moderately to Severely Active Ulcerative Colitis (UC)

Яквинус was studied for use in adults with moderately to severely active Ulcerative Colitis (UC), a condition characterized by fluctuating or episodic manifestations in the digestive tract. The research scenario involved both short-term Induction studies and longer-term Maintenance studies. Studies focused on outcomes capturing phases of heightened symptom activity, primarily measuring the attainment of clinical remission and endoscopic remission (mucosal healing) based on objective scoring systems. Data show patterns related to the occurrence of venous thromboembolism (VTE) in patients with UC, an observation that was reviewed by regulators.

Evidence in Special Populations

For Polyarticular Course Juvenile Idiopathic Arthritis (pcJIA), a randomized, controlled trial was evaluated in a population of pediatric patients (children and adolescents aged two to under 18 years). This research primarily focused on the frequency of disease flare over a defined time interval following an initial treatment period. Findings describe patterns observed in the study, where participants who continued taking the drug reported a lower frequency of disease flare compared to those who switched to an inactive pill. Sample sizes were modest for this pediatric research, and there is limited information for long-term outcomes for this group.

Key Studies & References

  1. Tofacitinib (Oral Route) Drug Information - NIH MedlinePlus
  2. Tofacitinib Drug Information - NIH MedlinePlus (Alternate/General Drug Overview)
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Frequently Asked Questions (FAQ)

Common questions about Яквинус (FAQ)

Q: What is the main difference between Яквинус and other similar treatments?

A: Official information describes Яквинус as a targeted synthetic small molecule that works inside your cells by inhibiting specific Janus Kinase (JAK) enzymes. This mechanism differs from biologic medicines, which are larger, protein-based drugs that typically require injection and work outside cells to block immune signals. This difference relates to its structure, how it's taken (orally), and its official site of action.

Q: Does Яквинус treat pain or just the underlying condition?

A: The official purpose of the medicine is to modify the disease activity and reduce the underlying inflammation that causes symptoms. In clinical studies, researchers measure outcomes related to reducing joint symptoms and improving physical function, which may relate to the reduction of discomfort and pain associated with the chronic inflammatory condition.

Q: Can Яквинус cause weight gain or changes in appetite?

A: Official information from clinical studies does not list weight gain as one of the commonly reported side effects. However, official regulatory warnings do note that unexplained weight loss is a symptom associated with some serious side effects, such as malignancies or infections.

Q: Why is it necessary to have certain tests done before starting Яквинус?

A: Regulatory documents state that screening tests are necessary to check for conditions that the medicine might worsen, such as active tuberculosis (TB) or other serious infections. Furthermore, treatment initiation is generally avoided if specific low blood cell counts (like lymphocytes or neutrophils) are present, as this is documented to increase the risk of serious infection.

Q: What happens if I forget to take a dose of Яквинус?

A: Regulatory guidance typically suggests that if a dose is forgotten, it is taken as soon as it is remembered. If it is almost time for the next scheduled dose, regulatory guidance suggests skipping the missed dose and returning to the regular schedule.

Q: What are the most common reasons why a doctor might prescribe Яквинус?

A: Official regulatory documents indicate that the medicine is prescribed for specific chronic inflammatory conditions, such as moderately to severely active rheumatoid arthritis or ulcerative colitis. It is often considered when a patient has had an inadequate response or intolerance to prior conventional or biologic therapies.

Q: Are there any specific foods or drinks to avoid while taking Яквинус?

A: Official labeling specifically advises patients to avoid the consumption of grapefruit or grapefruit juice. This precaution is necessary because grapefruit can increase the concentration of the medicine in the bloodstream.

Q: Can Яквинус affect my sleep patterns?

A: Sleep changes are not listed among the common side effects in official product information. However, patients should be aware that officially cited common adverse reactions like headache and dizziness could potentially influence sleep for some individuals.

Q: Do studies suggest that Яквинус is effective for different age groups?

A: Yes, regulatory documents cite clinical studies that have examined the medicine's effects in adults for conditions like Rheumatoid Arthritis and in pediatric patients (aged two years and older) for Juvenile Idiopathic Arthritis. The officially approved indications cover both adult and pediatric populations.

Q: Do official sources list mental health side effects like anxiety with Яквинус?

A: Mental health side effects such as anxiety are not listed as common adverse reactions in the official product information. However, official warnings describe that symptoms of serious events like blood clots (thrombosis) may include symptoms like anxiety or confusion in some reported cases.

Q: How is the safety of Яквинус monitored after it's approved?

A: The safety of the medicine is continuously monitored by government agencies even after it is approved. This is accomplished through required post-marketing clinical trials and regulatory updates to the product information based on emerging safety data and reports of adverse events.

Q: Does Яквинус have known interactions with common over-the-counter pain relievers?

A: Official labeling does not explicitly name all common over-the-counter (OTC) pain relievers. The detailed interactions primarily concern specific pharmaceutical agents that strongly affect the body's CYP3A4 and CYP2C19 enzyme systems or other potent immunosuppressants.

Q: Are there any known interactions between Яквинус and herbal supplements?

A: Regulatory documents generally advise patients to inform their healthcare provider about all concomitant therapies, including herbal supplements. This is because some supplements may potentially affect how the medicine works in the body.

Q: Can Яквинус cause hair loss?

A: Hair loss is not listed as a common or serious adverse reaction in the official product information provided by regulatory agencies.

Q: How soon after stopping Яквинус do its effects wear off?

A: Pharmacokinetic data indicates that the active drug compound is mostly eliminated from the body within a certain period after the last dose. The overall duration of the medicine's biological effect after discontinuation is part of the disease management, and a single timeframe is not detailed in the product labeling.

Q: Is it safe to drive or operate machinery while taking Яквинус?

A: Official product information does not contain a specific warning about driving or operating machinery. However, patients should be aware of common adverse reactions like dizziness and headache, which could potentially affect the ability to concentrate, and patients should be aware of this potential influence.

Q: How often do people taking Яквинус experience stomach upset?

A: Official data from clinical trials indicates that diarrhea is a common adverse reaction, affecting up to 1 in 10 people in the studies. Other types of stomach upset are not specified as common adverse events.

Q: Does the efficacy of Яквинус depend on the specific condition being treated?

A: Official documents describe the results of separate clinical trials for different conditions (such as Rheumatoid Arthritis, Ulcerative Colitis, and Juvenile Idiopathic Arthritis). The effectiveness is measured independently based on the specific disease assessment criteria and outcomes relevant to the condition being treated.

Q: Can Jakinuss be used by people with a history of heart disease?

A: Official warnings state that patients aged 50 years or older with at least one cardiovascular risk factor may have a higher risk of Major Adverse Cardiovascular Events (MACE). Use in this specific patient group is generally recommended only if no suitable alternative treatments are available.

Q: How do doctors decide if someone is eligible to start Яквинус?

A: Eligibility is based on multiple official criteria including the severity of the disease, having an inadequate response to prior treatments, being free from serious active infections (like active TB), and meeting acceptable blood test requirements.

Q: Are there specific storage conditions required for Яквинус?

A: Yes, official patient information requires that the medicine be stored at a temperature between 20 C and 25 C (68 F and 77 F). It must be kept from freezing and stored safely out of the reach of children.

Q: What are the official sources saying about the potential for blood clots with Яквинус?

A: Official sources, including Boxed Warnings, state that the medicine is associated with an increased risk of thrombosis (blood clots). This includes risks for serious events like Pulmonary Embolism (PE) and Deep Venous Thrombosis (DVT), especially when used at higher doses in certain patient populations.

Q: How does Яквинус compare in safety profile to older treatments for the same condition?

A: Official safety trials compared the drug to a TNF inhibitor in a subgroup of patients with cardiovascular risk factors. In this specific studied population, a higher occurrence of major adverse cardiovascular events (MACE) and malignancies was observed with Яквинус.

Q: How quickly can a person expect to see the effects of Яквинус?

A: Clinical trial data published in official documents indicates that an early response—such as measurable changes in C-reactive protein levels—was observed in some patients within two weeks of starting the therapy.

Q: Is long-term use of Яквинус safe, according to official information?

A: Official information mentions that long-term safety is continuously evaluated in extension studies. These studies observed an increased risk of Major Adverse Cardiovascular Events (MACE) and certain malignancies in a specific subgroup (patients aged 50 and older with at least one cardiovascular risk factor), leading to specific long-term usage restrictions for that population.

Q: What should I look out for that might be a serious side effect of Яквинус?

A: Official patient information describes symptoms for which seeking prompt medical attention is advised. These can include signs of a serious infection (fever, chills), signs of a blood clot (sudden shortness of breath, severe leg swelling or pain), or signs of gastrointestinal perforation (severe abdominal pain).

Q: Can I take Яквинус if I am planning to become pregnant?

A: Official guidelines suggest the use of effective contraception during treatment for women who may become pregnant. The guidelines further recommend that contraception should be continued for a specific period (e.g., at least four weeks) after the final dose.

Q: How is the appropriate treatment length with Яквинус usually decided?

A: Regulatory documents define specific treatment phases tailored to the condition, such as an initial induction phase (e.g., up to 16 weeks for Ulcerative Colitis) followed by a maintenance phase. The overall duration is determined by the treated condition and the individual's clinical response.

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How should Яквинус be stored and disposed of?

How to Store and Dispose of Яквинус (Tofacitinib)

The official storage and disposal requirements for Яквинус (Xeljanz) are strictly defined to ensure product quality and safety, according to regulatory labeling.

Mandatory Storage Conditions

Product Form Temperature Range Other Instructions
Tablets/XR 20 C to 25 C (68 F to 77 F) Keep from freezing. Do not repackage.
Oral Solution 20 C to 25 C (68 F to 77 F) Store in original bottle and carton to protect from light.

Stability and Handling

The oral solution must be used or discarded within 60 days after the bottle is first opened. Extended-release tablets must not be crushed, split, or chewed. All forms of the medicine must be stored out of the reach of children.

Official Disposal

Unused or expired medicine must be safely thrown away. Patients should consult a healthcare professional or pharmacist for specific instructions on how to properly dispose of leftover medication.

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

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