Brand names: Stelara, Wezlana, Selarsdi, Pyzchiva, Imuldosa
Drug class: Interleukin-mediated Agents, Miscellaneous

Medically reviewed by Drugs.com on Jan 10, 2025. Written by ASHP.

Introduction

Immunosuppressive agent; ¹ a human IgG₁ kappa monoclonal antibody directed against the p40 subunit of interleukin-12 (IL-12) and interleukin-23 (IL-23).^{1 2 3 4 2021 2026 2027 2028 2029}

Ustekinumab-auub, ustekinumab-aekn, ustekinumab-ttwe, ustekinumab-aauz, and ustekinumab-srlf are biosimilar to ustekinumab (Stelara).^{1 172 2021 2026 2027 2028 2029} A biosimilar is a biological that is highly similar to an FDA-licensed reference biological with the exception of minor differences in clinically inactive components and for which there are no clinically meaningful differences in safety, purity, or potency.^{2023 2024} Biosimilars are approved through an abbreviated licensure pathway that establishes biosimilarity between proposed biological and reference biological but does not independently establish safety and effectiveness of the proposed biological.²⁰²⁴ In order to be considered an interchangeable biosimilar, a biological product must meet additional requirements beyond demonstrating biosimilarity to its reference product.²⁰²² The only ustekinumab biosimilar that has been designated as interchangeable with ustekinumab (Stelara) is ustekinumab-aaub (Wezlana).¹⁷²

In this monograph, unless otherwise stated, the term “ustekinumab products” refers to ustekinumab (the reference drug) and its biosimilars.

Uses for Ustekinumab

Plaque Psoriasis

Management of moderate to severe plaque psoriasis in adults and pediatric patients ≥6 years of age who are candidates for systemic therapy or phototherapy.^{1 2 3 4 14 19 20 21 22 23 24 25 2021 2026 2027 2028 2029}

Guidelines generally support the use of ustekinumab in adult and pediatric patients with moderate-to-severe plaque psoriasis.^{2007 2010}

Recommendations for use and selection of psoriasis therapies vary based on patient age, disease characteristics (e.g., severity, location, presence of psoriatic arthritis), and comorbidities (e.g., inflammatory bowel disease).^{2007 2008 2009 2010 2011 2012}

Psoriatic Arthritis

Used for the management of active psoriatic arthritis in adults and pediatric patients ≥6 years of age.^{1 11 12 13 2021 2026 2027 2028 2029}

Disease-modifying treatments for psoriatic arthritis include oral small molecules (OSMs; e.g., methotrexate, sulfasalazine, cyclosporine, leflunomide, apremilast), biologic DMARDs (e.g., TNF blocking agents, secukinumab, ixekizumab, ustekinumab, brodalumab, abatacept), and/or targeted synthetic DMARDs (e.g., tofacitinib).²⁰⁰⁵

Guidelines generally support use of ustekinumab for psoriatic arthritis, although other agents such as a TNF blocking agent, OSM, or interleukin-17 (IL-17) inhibitor are typically preferred.²⁰⁰⁵

Recommendations for the use and selection of disease-modifying therapies in psoriatic arthritis vary based on the presence of certain disease characteristics (e.g., psoriatic spondylitis/axial disease, enthesitis) and comorbidities (e.g., inflammatory bowel disease, diabetes).²⁰⁰⁵

Crohn Disease

Treatment of moderately to severely active Crohn disease in adults.^{1 16 17 2021 2026 2027 2028 2029}

Drugs used to treat Crohn disease in adults include 5-aminosalicylates, antibiotics, corticosteroids, immunomodulators, and biologic agents including TNF blocking agents, ustekinumab, vedolizumab, and natalizumab.²⁰⁰⁰ Guidelines generally recommend use of ustekinumab in patients with moderate-to-severe Crohn disease compared to no treatment or in those who have failed previous treatments.^{2000 2001} Specific treatments are selected according to the patient’s risk profile and disease severity.²⁰⁰⁰

Ulcerative Colitis

Treatment of moderately to severely active ulcerative colitis in adults.^{1 15 2021 2026 2027 2028 2029}

Drugs used to treat ulcerative colitis in adults include oral and rectal 5-aminosalicylates, oral and rectal corticosteroids, immunomodulators (e.g., thiopurines, methotrexate), tofacitinib, and biologic agents, including TNF blocking agents, vedolizumab, and ustekinumab.^{2018 2019} Guidelines generally recommend ustekinumab for adult outpatients with moderate to severe ulcerative colitis.²⁰¹⁹ Specific treatments are selected according to disease severity, disease location/extent, disease prognosis, and previous therapies used.^{2018 2019 2020}

Ustekinumab Dosage and Administration

General

Pretreatment Screening

• Consider potential risks and benefits of the drug prior to initiating therapy in patients with chronic infection or history of recurrent infection.^{1 2021 2026 2027 2028 2029} Do not administer in patients with a clinically important active infection until the infection resolves or is appropriately treated.^{1 2021 2026 2027 2028 2029}

• Evaluate for active or inactive tuberculosis prior to initiation of ustekinumab therapy.^{1 2021 2026 2027 2028 2029} Do not administer to patients with active tuberculosis.^{1 2021 2026 2027 2028 2029}

• Administer all age-appropriate vaccines prior to starting ustekinumab therapy.^{1 2021 2026 2027 2028 2029} Do not administer live vaccines during ustekinumab therapy.^{1 2021 2026 2027 2028 2029} Do not administer BCG vaccine during ustekinumab therapy or for 1 year before or after ustekinumab therapy.^{1 2021 2026 2027 2028 2029}

Patient Monitoring

• Monitor for signs and symptoms of infection or active tuberculosis during and after treatment.^{1 2021 2026 2027 2028 2029}

• Monitor patients for signs and symptoms of nonmelanoma skin cancer, particularly those >60 years of age, those with a history of prolonged immunosuppressive therapy, and those with a history of psoralen and UVA radiation (PUVA).^{1 2021 2026 2027 2028 2029}

• Monitor all patients for signs and symptoms of posterior reversible encephalopathy syndrome (PRES), a neurologic disorder characterized by headaches, seizures, confusion, visual disturbances, and imaging changes.^{1 2021 2026 2027 2028 2029}

Premedication and Prophylaxis

• Administer an appropriate antimycobacterial regimen for the treatment of latent tuberculosis if indicated prior to initiating ustekinumab therapy.^{1 2021 2026 2027 2028 2029}

Administration

Administer by sub-Q injection or IV infusion depending on indication for use.^{1 2021 2026 2027 2028 2029}

Administer only to patients who will be closely monitored and have regular follow-up visits with a clinician.^{1 2021 2026 2027 2028 2029}

Sub-Q Administration

For sub-Q administration, available as 90-mg/mL solution in 0.5- or 1-mL prefilled syringes and 0.5-mL single-dose vials (ustekinumab and ustekinumab-auub only).^{1 2021 2026 2027 2028 2029}

Administer by sub-Q injection at a different anatomic site (e.g., upper arms, gluteal regions, thighs, any quadrant of the abdomen) than the previous injection.^{1 2021 2026 2027 2028 2029} Do not make injections into areas where the skin is tender, bruised, erythematous, or indurated.^{1 2021 2026 2027 2028 2029}

When using ustekinumab products in single-dose vial, use a 1-mL syringe with a 27-gauge, ½-inch needle to administer the drug.^{1 2021}

Do not shake the injection.^{1 2021}

Injection contains no preservative; discard any unused portion.^{1 2021 2026 2027 2028 2029}

Intended for use under the supervision of a clinician, but may be self-administered if the clinician determines that the patient and/or their caregiver is competent to prepare and safely administer the drug by sub-Q injection after appropriate training.^{1 2021 2026 2027 2028 2029} When used in pediatric patients, manufacturer recommends administration by a clinician.^{1 2021 2026 2027 2028 2029}

IV Administration

For IV infusion, available as 5-mg/mL injection concentrate in 26-mL (130-mg) single-dose vials.^{1 2021 2026 2027 2028 2029}

Administer using an inline, nonpyrogenic, low-protein-binding 0.2-µm filter.^{1 2021 2026 2027 2028 2029} Use only polypropylene or polyvinyl chloride infusion sets for administration of ustekinumab-aauz.²⁰²⁸

Do not infuse simultaneously through the same IV line with any other drug.^{1 2021 2026 2027 2028 2029}

Dilution

Dilute in 0.9% sodium chloride injection to provide a total volume of 250 mL (i.e., remove a volume of diluent equal to the total required volume of ustekinumab injection concentrate from a 250-mL infusion bag prior to adding the drug concentrate).^{1 2021 2026 2027 2028 2029} A 250 mL bag of 0.45% sodium chloride may be used as an alternative for most ustekinumab products excluding ustekinumab-aekn.^{1 2021 2026 2027 2028 2029} Mix gently.^{1 2021 2026 2027 2028 2029}

Do not use diluted solution if visibly opaque particles, discoloration, or foreign particles are observed.^{1 2021 2026 2027 2028 2029}

Injection contains no preservative; discard any unused portion.^{1 2021 2026 2027 2028 2029} The diluted solution may be stored for up to 7 hours at room temperature (up to 25°C) prior to administration for ustekinumab, ustekinumab-auub, ustekinumab-aauz, and ustekinumab-srlf and up to 3 hours for ustekinumab-aekn.^{1 2021 2026 2028 2029} The diluted solution of ustekinumab-ttwe may be stored at room temperature (up to 30ºC) for up to 36 hours including infusion period.²⁰²⁷

Completely administer the infusion within 8 hours of dilution in the infusion bag for ustekinumab, ustekinumab-auub, ustekinumab-aauz, and ustekinumab-srlf.^{1 2021 2028 2029} Completely administer the infusion within 4 hours of dilution in the infusion bag for ustekinumab-aekn.²⁰²⁶

Rate of Administration

Administer over at least 1 hour.^{1 2021 2026 2027 2028 2029}

Dosage

Use patient's current weight at the time of dosing to determine weight-based doses.^{1 2021 2026 2027 2028 2029}

Pediatric Patients

Plaque Psoriasis

Sub-Q

Recommended dosage is based on body weight.^{1 2021 2026 2027 2028 2029} Dosage recommendations for pediatric patients who weigh <60 kg are only given for the ustekinumab and ustekinumab-auub products; for all other ustekinumab products, dosage recommendations are given for pediatric patients who weigh 60 kg or more.^{1 2021 2026 2027 2028 2029}

6–17 years of age weighing <60 kg: 0.75 mg/kg at 0 and 4 weeks, then every 12 weeks for ustekinumab or ustekinumab-auub.^{1 2021} For pediatric patients weighing <60 kg, see prescribing information of ustekinumab or ustekinumab-auub for recommended injection volumes for the recommended dose (0.75 mg/kg).^{1 2021}

6–17 years of age weighing 60–100 kg: 45 mg at 0 and 4 weeks, then every 12 weeks.^{1 2021 2026 2027 2028 2029}

6–17 years of age weighing >100 kg: 90 mg at 0 and 4 weeks, then every 12 weeks.^{1 2021 2026 2027 2028 2029}

Psoriatic Arthritis

Sub-Q

Recommended dosage is based on body weight.^{1 2021 2026 2027 2028 2029} Dosage recommendations for pediatric patients who weigh <60 kg are only given for the ustekinumab and ustekinumab-auub products; for all other ustekinumab products, dosage recommendations are given for pediatric patients who weigh 60 kg or more.^{1 2021 2026 2027 2028 2029}

6–17 years of age weighing <60 kg: 0.75 mg/kg at 0 and 4 weeks, then every 12 weeks for ustekinumab or ustekinumab-auub.^{1 2021} For pediatric patients weighing <60 kg, see prescribing information of ustekinumab or ustekinumab-auub for recommended injection volumes for the recommended dose (0.75 mg/kg).^{1 2021}

6–17 years of age weighing ≥60 kg: 45 mg at 0 and 4 weeks, then every 12 weeks.^{1 2021 2026 2027 2028 2029}

6–17 years of age weighing >100 kg with coexisting moderate-to-severe plaque psoriasis: 90 mg at 0 and 4 weeks, then every 12 weeks.^{1 2021 2026 2027 2028 2029}

Adults

Plaque Psoriasis

Sub-Q

Body weight ≤100 kg: 45 mg at 0 and 4 weeks, then every 12 weeks.^{1 2021 2026 2027 2028 2029}

Body weight >100 kg: 90 mg at 0 and 4 weeks, then every 12 weeks.^{1 2021 2026 2027 2028 2029} Although 45-mg doses were effective in these patients in clinical studies, 90-mg doses were more effective.^{1 2021 2026 2027 2028 2029}

Psoriatic Arthritis

Sub-Q

45 mg at 0 and 4 weeks, then every 12 weeks.^{1 2021 2026 2027 2028 2029}

Body weight >100 kg with coexisting moderate-to-severe plaque psoriasis: 90 mg at 0 and 4 weeks, then every 12 weeks.^{1 2021 2026 2027 2028 2029}

Crohn Disease or Ulcerative Colitis

IV, then Sub-Q

IV induction: Single dose of 260 mg in patients weighing ≤55 kg, 390 mg in those weighing >55 to 85 kg, and 520 mg in those weighing >85 kg.^{1 2021 2026 2027 2028 2029}

Sub-Q maintenance therapy: 90 mg every 8 weeks by sub-Q injection; initiate 8 weeks after the IV induction dose.^{1 2021 2026 2027 2028 2029}

Special Populations

Hepatic Impairment

Manufacturer makes no specific dosage recommendations.^{1 2021 2026 2027 2028 2029}

Renal Impairment

Manufacturer makes no specific dosage recommendations.^{1 2021 2026 2027 2028 2029}

Geriatric Patients

Manufacturer makes no specific dosage recommendations.^{1 2021 2026 2027 2028 2029}

Cautions for Ustekinumab

Contraindications

• History of clinically important hypersensitivity to ustekinumab or any ingredient in the formulation.^{1 2021 2026 2027 2028 2029}

Warnings/Precautions

Infectious Complications

May increase risk of infection, including reactivation of latent infections.^{1 2021 2026 2027 2028 2029} Serious bacterial, mycobacterial, fungal, and viral infections observed.^{1 2021 2026 2027 2028 2029} Serious or clinically important infections (e.g., requiring hospitalization) including cellulitis, diverticulitis, osteomyelitis, viral infections, gastroenteritis, pneumonia, urinary tract infections, appendicitis, cholecystitis, sepsis, anal abscess, ophthalmic herpes zoster, listeriosis, and listeria meningitis reported.^{1 2021 2026 2027 2028 2029}

Individuals genetically deficient in IL-12/IL-23 are particularly vulnerable to disseminated infections caused by mycobacteria (including nontuberculous, environmental mycobacteria), salmonella (including nontyphi strains), and BCG vaccine; serious, sometimes fatal, infections reported in such individuals.^{1 2021 2026 2027 2028 2029} Not known whether patients with ustekinumab-induced blockade of IL-12/IL-23 are susceptible to these infections.¹ Consider appropriate diagnostic testing for these infections (e.g., tissue culture, stool culture) as dictated by clinical circumstances.^{1 2021 2026 2027 2028 2029}

Do not initiate ustekinumab products in patients with any clinically important active infection and do not administer until the infection resolves or is adequately treated.^{1 2021 2026 2027 2028 2029} If a serious or clinically important infection develops, consider discontinuing ustekinumab until infection resolves or is adequately treated.^{1 2021 2026 2027 2028 2029} Consider potential risks and benefits of the drug prior to initiating therapy in patients with chronic infection or history of recurrent infection.^{1 2021 2026 2027 2028 2029}

Evaluate patients for active or latent tuberculosis prior to initiation of ustekinumab products.^{1 2021 2026 2027 2028 2029} Do not administer to patients with active tuberculosis.^{1 2021 2026 2027 2028 2029} When indicated, initiate appropriate antimycobacterial regimen for treatment of latent tuberculosis prior to ustekinumab therapy.^{1 2021 2026 2027 2028 2029} Also consider antimycobacterial therapy prior to ustekinumab therapy in individuals with a history of latent or active tuberculosis in whom an adequate course of antimycobacterial treatment cannot be confirmed.^{1 2021 2026 2027 2028 2029} Closely monitor patients for active tuberculosis during and after treatment.^{1 2021 2026 2027 2028 2029}

Malignancies

May increase risk of malignancy.^{1 2021 2026 2027 2028 2029}

Malignancies (e.g., nonmelanoma skin cancer, prostate cancer, melanoma, colorectal cancer, breast cancer) reported in clinical studies.¹ Incidence of malignancies other than nonmelanoma skin cancer in ustekinumab-treated psoriasis patients similar to expected incidence in general US population.¹

Inhibition of the p40 subunit of IL-12/IL-23 increased the risk of malignancy in animals.¹ Ultraviolet (UV) radiation-induced skin cancers developed earlier and more frequently in mice genetically manipulated to be deficient in both IL-12 and IL-23 or IL-12 alone.¹ Relevance of these data to risk of malignancy in humans unknown.¹

Rapid appearance of multiple cutaneous squamous cell carcinomas reported in patients with preexisting risk factors for nonmelanoma skin cancer.^{1 2021 2026 2027 2028 2029} Monitor all patients receiving ustekinumab for nonmelanoma skin cancer.^{1 2021 2026 2027 2028 2029} Closely monitor patients >60 years of age, those with a history of prolonged immunosuppressive therapy, and those with a history of psoralen and UVA radiation (PUVA) treatment.^{1 2021 2026 2027 2028 2029}

Safety of ustekinumab products not evaluated in patients with history of malignancy or with known malignancy.^{1 2021 2026 2027 2028 2029}

Hypersensitivity Reactions

Hypersensitivity reactions (e.g., anaphylaxis, angioedema, rash, urticaria) reported.^{1 2021 2026 2027 2028 2029}

If anaphylactic or other clinically important hypersensitivity reaction occurs, discontinue ustekinumab and institute appropriate therapy.^{1 2021 2026 2027 2028 2029}

The needle cover of the Stelarabrand prefilled syringe contains dry natural rubber and should not be handled by individuals sensitive to latex.¹

Posterior Reversible Encephalopathy Syndrome

Posterior reversible encephalopathy syndrome (PRES), also known as reversible posterior leukoencephalopathy syndrome (RPLS), a neurologic syndrome characterized by reversible vasogenic subcortical edema, reported in clinical trials and postmarketing experience.^{1 7} Patients experienced headaches, seizures, confusion, visual disturbances, and imaging changes.¹

Signs and symptoms typically occurred within a few days to several months, although some cases reported latency of 1 year or more.¹ Patients recovered after stopping ustekinumab and receiving supportive care.¹

Monitor patients.^{1 2021 2026 2027 2028 2029} If RPLS suspected, discontinue ustekinumab and institute appropriate treatment.^{1 2021 2026 2027 2028 2029}

Immunization

Administer all age-appropriate vaccines prior to initiation of ustekinumab therapy.^{1 2021 2026 2027 2028 2029}

Avoid live vaccines.^{1 2021 2026 2027 2028 2029} Do not administer BCG vaccine during, for 1 year before, or for 1 year after ustekinumab therapy.^{1 2021 2026 2027 2028 2029}

Noninfectious Pneumonia

Interstitial pneumonia, eosinophilic pneumonia, and cryptogenic organizing pneumonia reported.^{1 2021 2026 2027 2028 2029} Manifestations included cough, dyspnea, and interstitial infiltrates following 1–3 doses of ustekinumab; serious outcomes (e.g., respiratory failure, prolonged hospitalization) also reported.^{1 2021 2026 2027 2028 2029} Improvement has occurred following discontinuance of ustekinumab and, in some cases, administration of corticosteroids.^{1 2021 2026 2027 2028 2029}

If a diagnosis of interstitial pneumonia, eosinophilic pneumonia, or cryptogenic organizing pneumonia is confirmed, discontinue ustekinumab and institute appropriate treatment,^{1 2021 2026 2027 2028 2029}

Immunogenicity

Antibodies to ustekinumab detected, generally in low titers, in 6–12.4% of patients with psoriasis or psoriatic arthritis.¹ In psoriasis patients, anti-ustekinumab antibodies were associated with reduced or undetectable serum ustekinumab concentrations and reduced efficacy; majority of psoriasis patients with anti-ustekinumab antibodies had neutralizing antibodies.¹

Antibodies to ustekinumab also detected in 2.9 or 4.6% of patients with Crohn's disease or ulcerative colitis, respectively.¹

No apparent association between antibody development and injection site reactions.¹

Specific Populations

Pregnancy

Data regarding ustekinumab use in pregnant women are insufficient to inform a drug-associated risk of major birth defects, miscarriage, and other adverse maternal or fetal outcomes.¹ Human IgG is transported across the placenta with increasing efficiency as pregnancy progresses; therefore, ustekinumab may be transferred to the developing fetus.¹

Ustekinumab may be associated with a theoretical immune response interference concern.¹ Delaying administration of live vaccines for a minimum of 6 months after birth may be considered based on ustekinumab clearance.¹

Lactation

Limited data suggest that ustekinumab is present in human milk.¹ Effects on milk production and the breast-fed infant are unknown.¹ No data exist in the literature or postmarketing experience to suggest presence of adverse effects causally related to ustekinumab exposure in a breast-fed infant.¹

Consider developmental and health benefits of breast-feeding along with the mother's clinical need for ustekinumab and any potential adverse effects on the breast-fed infant from either the drug or underlying maternal condition.¹

Pediatric Use

Safety and efficacy established in pediatric patients 6–17 years of age with moderate to severe plaque psoriasis who are candidates for phototherapy or systemic therapy.^{1 2021 2026 2027 2028 2029}

Safety and efficacy established in pediatric patients 6–17 years of age with psoriatic arthritis.^{1 2021 2026 2027 2028 2029}

Safety and efficacy not established in pediatric patients with Crohn disease or ulcerative colitis or in pediatric patients <6 years of age with psoriasis or psoriatic arthritis.^{1 2021 2021 2026 2027 2028 2029}

Geriatric Use

No apparent differences in safety and efficacy relative to younger adults; however, insufficient experience in patients ≥65 years of age to determine whether they respond differently than younger adults.¹

Common Adverse Effects

Patients with psoriasis (≥3%): Nasopharyngitis, upper respiratory tract infection, headache, fatigue.¹

Patients with psoriatic arthritis (≥3%): Adverse effects similar to those in patients with psoriasis.¹

Patients with Crohn disease (≥3%): Vomiting during induction therapy; nasopharyngitis, injection site erythema, vulvovaginal candidiasis/mycotic infection, bronchitis, pruritus, urinary tract infection, sinusitis during maintenance therapy.¹

Patients with ulcerative colitis (≥3%): Nasopharyngitis during induction therapy; nasopharyngitis, headache, abdominal pain, influenza, fever, diarrhea, sinusitis, fatigue, nausea during maintenance therapy.¹

Drug Interactions

No formal drug interaction studies to date.¹

Administered concomitantly with methotrexate, corticosteroids, and/or NSAIAs in clinical studies in psoriatic arthritis.^{1 11 12}

Drugs Metabolized by Hepatic Microsomal Enzymes

Because increased levels of cytokines (e.g., interleukin-1 [IL-1], interleukin-6 [IL-6], interleukin-10 [IL-10], tumor necrosis factor [TNF; TNF-α], interferon [IFN]) during chronic inflammation may suppress formation of CYP isoenzymes, ustekinumab may normalize formation of CYP enzymes.^{1 2021} IL-12 and/or IL-23 did not alter activity of CYP isoenzymes 1A2, 2B6, 2C9, 2C19, 2D6, or 3A4 in vitro; however, clinical relevance not established.¹

Drugs metabolized by CYP isoenzymes, particularly those with a narrow therapeutic index: Consider monitoring therapeutic effect and serum drug concentrations following initiation of ustekinumab products; adjust dosage as needed.¹

Vaccines

Avoid live vaccines.^{1 2021 2026 2027 2028 2029}

Use caution when administering live vaccines to household contacts of patients receiving ustekinumab products because of potential risk for shedding vaccine organism from household contact and transmission to patient.^{1 2021 2026 2027 2028 2029}

Inactive vaccines administered during ustekinumab therapy may not elicit an immune response sufficient to prevent disease.^{1 2021 2026 2027 2028 2029}

Specific Drugs and Therapies

Ustekinumab Pharmacokinetics

Absorption

Bioavailability

In psoriasis patients, peak serum concentrations achieved in a median of 13.5 or 7 days following a single sub-Q dose of 45 or 90 mg, respectively.¹ Steady-state concentrations achieved within 28 weeks with multiple-dose sub-Q administration.¹ No apparent accumulation in serum over time when administered sub-Q every 12 weeks.¹

In patients with Crohn disease or ulcerative colitis receiving recommended induction and maintenance dosages, steady-state concentrations achieved by start of second maintenance dose.¹ No apparent accumulation in serum over time when maintenance doses administered sub-Q every 8 weeks.¹

Special Populations

Body weight: 90-mg dose in patients with psoriasis or psoriatic arthritis who weigh >100 kg results in median trough serum concentrations comparable to those achieved following 45-mg dose in patients weighing ≤100 kg.¹

Distribution

Special Populations

Geriatric patients: No apparent change in volume of distribution in psoriasis patients >65 years of age.¹

Elimination

Metabolism

Metabolic pathway not characterized.^{1 2021 2026 2027 2028 2029}

Expected to be degraded into small peptides and amino acids via catabolic pathways in same manner as endogenous IgG.^{1 2021 2026 2027 2028 2029}

Half-life

Psoriasis patients: Mean half-life of 14.9–45.6 days following sub-Q administration.¹

Patients with Crohn's disease or ulcerative colitis: Estimated median terminal half-life of approximately 19 days.¹

Special Populations

Geriatric patients: No apparent change in clearance in individuals ≥65 years of age.¹

Stability

Storage

Parenteral

Injection

2–8°C; do not freeze.^{1 2021 2026 2027 2028 2029} Store in original carton to protect from light until administration.^{1 2021 2026 2027 2028 2029} Store vials upright.¹

Individual prefilled syringes and the ustekinumab-auub single-dose vial may be stored at room temperature (up to 30°C) for one single period that does not exceed 30 days (60 days for ustekinumab-ttwe prefilled syringe).^{1 2021 2026 2027 2028 2029} Once these products have been stored at room temperature, do not return to refrigerator; prefilled syringe of ustekinumab-ttwe may be returned to refrigerator one time only for maximum of 3 days.^{1 2021 2026 2027 2028 2029}

Injection Concentrate

2–8°C; do not freeze.^{1 2021 2026 2027 2028 2029} Store in original carton to protect from light until administration.^{1 2021 2026 2027 2028 2029} Store vials upright.¹

Diluted solution: 7 hours at room temperature (≤25°C) prior to administration for ustekinumab, ustekinumab-auub, ustekinumab-aauz, and ustekinumab-srlf; 3 hours for ustekinumab-aekn.^{1 2021 2026 2028 2029} For ustekinumab-ttwe, may store diluted solution at room temperature (up to 30°C) for up to 36 hours including infusion period.²⁰²⁷ If required, diluted ustekinumab-ttwe may be refrigerated at 2-8°C for up to 15 days.²⁰²⁷ After removal from refrigeration, solution may be stored at room temperature at up to 30°C for an additional 24 hours including infusion period.²⁰²⁷

Complete administration of the infusion within 8 hours of dilution in the infusion bag for ustekinumab, ustekinumab-auub, ustekinumab-aauz, and ustekinumab-srlf; 4 hours for ustekinumab-aekn.^{1 2021 2026 2028 2029}

Actions

• Binds with high affinity and specificity to the p40 subunit of both IL-12 and IL-23.^{1 2 3 2021 2026 2027 2028 2029}

• IL-12 and IL-23 are naturally occurring cytokines involved in inflammatory and immune responses, such as natural killer cell activation and CD4⁺ T-cell differentiation and activation.^{1 2 4 2021 2026 2027 2028 2029}

• IL-12 and IL-23 contribute to chronic inflammation associated with Crohn's disease and ulcerative colitis; in animal models of colitis, genetic absence or antibody blockade of the p40 subunit of IL-12 and IL-23 was protective.^{1 2021 2026 2027 2028 2029}

• Disrupts IL-12- and IL-23-mediated signaling and cytokine cascades by disrupting the interaction of these cytokines with a shared cell-surface receptor chain, IL-12 β1.^{1 2 2021 2026 2027 2028 2029}

• Produced with a murine cell line using standard bioprocessing technology.^{1 2021 2026 2027 2028 2029}

Advice to Patients

• Instruct patients to read the manufacturer’s patient information (medication guide) prior to initiation of therapy and each time the prescription is refilled.^{1 2021 2026 2027 2028 2029}

• Instruct patient and/or caregiver regarding proper dosage and administration of ustekinumab products, including the use of aseptic technique, and proper disposal of needles and syringes if it is determined that the patient and/or caregiver is competent to safely administer the drug.^{1 2021 2026 2027 2028 2029}

• Inform patients that ustekinumab products may lower the ability of their immune system to fight infections.^{1 2021 2026 2027 2028 2029} Stress importance of contacting clinicians if any signs or symptoms of infection develop.^{1 2021 2026 2027 2028 2029}

• Inform patients regarding the risk of malignancies while receiving ustekinumab products.^{1 2021 2026 2027 2028 2029}

• Advise patients to discontinue use of ustekinumab products and seek immediate medical attention if they experience any symptoms of serious allergic reactions.^{1 2021 2026 2027 2028 2029}

• Advise patients that the needle cover of the Stelara brand prefilled syringe contains dry natural rubber, which may cause allergic reactions in individuals sensitive to latex.¹

• Advise patients that ustekinumab products can interfere with the usual response to immunizations and that they should avoid receiving live vaccines during ustekinumab therapy.^{1 2021 2026 2027 2028 2029}

• Advise patients to inform their clinicians of existing or contemplated concomitant therapy, including prescription and OTC drugs and dietary or herbal supplements (e.g., St. John’s wort), as well as any concomitant illnesses.^{1 2021 2026 2027 2028 2029}

• Advise patients to inform their clinicians if they are or plan to become pregnant or plan to breast-feed.^{1 2021 2026 2027 2028 2029}

• Inform patients of other important precautionary information.^{1 2021 2026 2027 2028 2029}

Additional Information

The American Society of Health-System Pharmacists, Inc. represents that the information provided in the accompanying monograph was formulated with a reasonable standard of care, and in conformity with professional standards in the field. Readers are advised that decisions regarding use of drugs are complex medical decisions requiring the independent, informed decision of an appropriate health care professional, and that the information contained in the monograph is provided for informational purposes only. The manufacturer’s labeling should be consulted for more detailed information. The American Society of Health-System Pharmacists, Inc. does not endorse or recommend the use of any drug. The information contained in the monograph is not a substitute for medical care.

Preparations

Excipients in commercially available drug preparations may have clinically important effects in some individuals; consult specific product labeling for details.

Please refer to the ASHP Drug Shortages Resource Center for information on shortages of one or more of these preparations.

Biological Products Related to ustekinumab

Find detailed information on biosimilars for this medication.

Frequently asked questions

• Do I qualify for the Stelara copay card, how much can I save?
• What is the mechanism of action of Stelara and how does it work?
• What are the new drugs for plaque psoriasis?
• What biosimilars have been approved in the United States?
• How quickly or how long before Stelara starts to work?
• How long can you keep Stelara in or out of the fridge?
• Can you get a flu shot or take antibiotics while on Stelara?
• How is Stelara injected or administered?
• What blood tests are needed for Stelara?

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