Stelara sounds a little like the name of a calm spa retreat, but it is actually a serious prescription biologic medication used for several immune-related inflammatory conditions. Its generic name is ustekinumab, and its job is to help quiet specific immune signals that can drive inflammation in plaque psoriasis, psoriatic arthritis, Crohn’s disease, and ulcerative colitis.
If your healthcare provider has prescribed Stelara, one of the first questions is usually very practical: “How much do I take, and how often?” The answer depends on the condition being treated, body weight, age, and whether the dose is given under the skin or through an intravenous infusion. In other words, Stelara dosing is not a “one-size-fits-all hoodie.” It is more like a tailored jacket: the fit matters.
This guide explains Stelara dosage, available forms and strengths, common dosing schedules, how home injections generally work, and what patients should know before turning their kitchen counter into injection-prep headquarters.
What Is Stelara?
Stelara is a prescription biologic medicine. Biologics are made from living cells and are designed to target specific parts of the immune system. Stelara blocks interleukin-12 and interleukin-23, two proteins involved in inflammatory immune activity. By reducing these signals, Stelara may help improve symptoms in certain autoimmune and inflammatory diseases.
In the United States, Stelara is approved for adults and certain pediatric patients with moderate to severe plaque psoriasis, active psoriatic arthritis, moderately to severely active Crohn’s disease, and adults with moderately to severely active ulcerative colitis. The age limits and dosing schedules vary by condition, so always use the plan written by the prescribing clinician.
Stelara Forms and Strengths
Stelara comes in different forms depending on how it is being used. For many patients, maintenance treatment is given as a subcutaneous injection, meaning the medicine is injected under the skin. For Crohn’s disease and ulcerative colitis, treatment usually begins with a one-time intravenous infusion given in a healthcare setting, followed later by injections under the skin.
Subcutaneous Injection Forms
| Form | Strength | Typical Use |
|---|---|---|
| Single-dose prefilled syringe | 45 mg/0.5 mL | Home or clinic injection when prescribed |
| Single-dose prefilled syringe | 90 mg/mL | Home or clinic injection when prescribed |
| Single-dose vial | 45 mg/0.5 mL | Often used when a measured dose is needed, especially in some pediatric dosing |
Intravenous Infusion Form
| Form | Strength | Typical Use |
|---|---|---|
| Single-dose vial for IV infusion | 130 mg/26 mL | Initial induction dose for Crohn’s disease and ulcerative colitis |
The IV form is not something patients inject at home. It is administered by a healthcare professional, usually at an infusion center, clinic, or hospital outpatient setting. The at-home portion, when appropriate, usually involves the prefilled syringe or vial for subcutaneous injection.
Stelara Dosage for Plaque Psoriasis
For adults with plaque psoriasis, Stelara dosing is based mainly on body weight. The first injection is given at week 0, the second at week 4, and then maintenance dosing continues every 12 weeks.
Adult Plaque Psoriasis Dosage
| Body Weight | Recommended Dose | Schedule |
|---|---|---|
| 100 kg or less | 45 mg | Week 0, week 4, then every 12 weeks |
| More than 100 kg | 90 mg | Week 0, week 4, then every 12 weeks |
For pediatric patients 6 years and older with plaque psoriasis, dosing is also weight based. Children under 60 kg receive a calculated mg/kg dose, while higher weight groups receive fixed doses.
Pediatric Plaque Psoriasis Dosage
| Body Weight | Recommended Dose | Schedule |
|---|---|---|
| Less than 60 kg | 0.75 mg/kg | Week 0, week 4, then every 12 weeks |
| 60 kg to 100 kg | 45 mg | Week 0, week 4, then every 12 weeks |
| More than 100 kg | 90 mg | Week 0, week 4, then every 12 weeks |
Stelara Dosage for Psoriatic Arthritis
For adults with active psoriatic arthritis, the usual Stelara dose is 45 mg injected under the skin at week 0, week 4, and then every 12 weeks. If an adult also has moderate to severe plaque psoriasis and weighs more than 100 kg, the recommended dose is typically 90 mg on the same schedule.
Adult Psoriatic Arthritis Dosage
| Patient Situation | Recommended Dose | Schedule |
|---|---|---|
| Most adults with active psoriatic arthritis | 45 mg | Week 0, week 4, then every 12 weeks |
| Adults over 100 kg with coexisting moderate to severe plaque psoriasis | 90 mg | Week 0, week 4, then every 12 weeks |
For pediatric patients 6 years and older with active psoriatic arthritis, dosing is weight based. The schedule is the same: week 0, week 4, then every 12 weeks.
Pediatric Psoriatic Arthritis Dosage
| Body Weight | Recommended Dose | Schedule |
|---|---|---|
| Less than 60 kg | 0.75 mg/kg | Week 0, week 4, then every 12 weeks |
| 60 kg or more | 45 mg | Week 0, week 4, then every 12 weeks |
| More than 100 kg with coexisting moderate to severe plaque psoriasis | 90 mg | Week 0, week 4, then every 12 weeks |
Stelara Dosage for Crohn’s Disease
Crohn’s disease dosing is different because treatment begins with an IV induction dose. This first dose is given through a vein by a healthcare professional and usually takes at least one hour. After that, maintenance treatment is given as a subcutaneous injection.
Adult Crohn’s Disease IV Induction Dose
| Body Weight | Initial IV Dose |
|---|---|
| 55 kg or less | 260 mg |
| More than 55 kg to 85 kg | 390 mg |
| More than 85 kg | 520 mg |
Adult Crohn’s Disease Maintenance Dose
After the initial IV infusion, the recommended adult maintenance dose is 90 mg injected under the skin 8 weeks after the first IV dose, then every 8 weeks after that.
Pediatric Crohn’s Disease Dosage
For pediatric patients 2 years and older with Crohn’s disease, dosing is based on body weight. For children weighing 10 kg or more, the initial dose is a single IV infusion. Maintenance dosing is then given under the skin 8 weeks after the IV dose and every 8 weeks thereafter.
| Pediatric Body Weight | Initial IV Dose |
|---|---|
| 10 kg to 25 kg | 10 mg/kg |
| More than 25 kg to 55 kg | 260 mg |
| More than 55 kg to 85 kg | 390 mg |
| More than 85 kg | 520 mg |
| Pediatric Body Weight | Maintenance Dose | Schedule |
|---|---|---|
| 10 kg to 35 kg | 2.5 mg/kg under the skin | 8 weeks after IV dose, then every 8 weeks |
| More than 35 kg | 90 mg under the skin | 8 weeks after IV dose, then every 8 weeks |
Stelara Dosage for Ulcerative Colitis
For adults with moderately to severely active ulcerative colitis, Stelara also begins with a one-time IV induction dose based on body weight. After that, maintenance therapy is given by subcutaneous injection.
Adult Ulcerative Colitis IV Induction Dose
| Body Weight | Initial IV Dose |
|---|---|
| 55 kg or less | 260 mg |
| More than 55 kg to 85 kg | 390 mg |
| More than 85 kg | 520 mg |
Adult Ulcerative Colitis Maintenance Dose
The recommended adult maintenance dose is 90 mg injected under the skin 8 weeks after the initial IV dose, then every 8 weeks thereafter.
Simple Stelara Dosage Examples
Here are a few examples to make the dosing logic easier to understand. These examples are educational only and should not replace your prescription label or clinician’s instructions.
Example 1: Adult With Plaque Psoriasis Weighing 82 kg
An adult who weighs 82 kg and is being treated for plaque psoriasis may be prescribed 45 mg at week 0, 45 mg at week 4, and then 45 mg every 12 weeks.
Example 2: Adult With Plaque Psoriasis Weighing 108 kg
An adult who weighs more than 100 kg may be prescribed 90 mg at week 0, 90 mg at week 4, and then 90 mg every 12 weeks.
Example 3: Adult With Crohn’s Disease Weighing 76 kg
An adult with Crohn’s disease weighing 76 kg may receive a 390 mg IV induction dose in a healthcare setting. Eight weeks later, the patient may begin 90 mg subcutaneous injections every 8 weeks.
How to Use Stelara at Home
Some people receive Stelara injections from a healthcare professional, while others may inject at home after proper training. Do not try to inject Stelara until a healthcare provider has shown you the correct technique. This is one of those situations where “I watched a video once” is not the same as medical training.
Where Stelara Can Be Injected
Stelara can generally be injected under the skin in the stomach area, upper thighs, buttocks, or upper arms if a caregiver is giving the injection. Avoid the area around the belly button. Also avoid skin that is tender, bruised, red, hard, scarred, irritated, or affected by active psoriasis plaques when possible.
Basic Home Injection Steps
- Wash your hands with soap and warm water.
- Choose a clean, well-lit surface.
- Check the carton and syringe to confirm the correct dose.
- Look at the expiration date.
- Inspect the liquid. It should be clear to light yellow and should not be cloudy, discolored, frozen, or full of large particles.
- Choose a new injection site each time.
- Clean the skin with an antiseptic wipe and let it dry.
- Inject exactly as trained by your healthcare provider.
- Do not rub the injection site afterward.
- Place the used syringe, needle, or vial into an FDA-cleared sharps container.
If your prescribed 90 mg dose is supplied as two 45 mg prefilled syringes, you may need two injections given one right after the other. Follow your healthcare provider’s exact instructions.
How to Store Stelara
Stelara should usually be stored in the refrigerator between 36°F and 46°F. Keep it in the original carton to protect it from light. Do not freeze it. Do not shake it. Stelara is a delicate biologic, not a salad dressing.
If needed, individual prefilled syringes may be stored at room temperature up to 86°F for one single period of up to 30 days while kept in the original carton. Once a prefilled syringe has been stored at room temperature, it should not be returned to the refrigerator. If it is not used within the allowed room-temperature period, it should be discarded according to the instructions provided by your healthcare team.
What If You Miss a Dose?
If you miss a Stelara dose, contact your healthcare provider or pharmacist for instructions. Do not double up, freestyle a new schedule, or try to “catch up” without medical guidance. Stelara is given weeks apart, and your care team can help decide the safest timing for the next dose.
What If You Use Too Much Stelara?
If you inject too much Stelara, contact your healthcare provider right away or call Poison Help at 1-800-222-1222. If symptoms feel severe or urgent, seek emergency medical care. Too much medication is not a “more is better” situation; it is a “call someone with a medical degree” situation.
Important Safety Notes Before Using Stelara
Because Stelara affects the immune system, it can increase the risk of infections. Before starting treatment, healthcare providers may screen for tuberculosis and review infection history, vaccine status, and other health conditions.
Tell Your Healthcare Provider If You:
- Have signs of infection, such as fever, chills, cough, painful skin sores, diarrhea, stomach pain, or burning during urination.
- Have tuberculosis or have been near someone with tuberculosis.
- Get infections often or have infections that keep coming back.
- Have a history of cancer or new skin growths.
- Are pregnant, planning pregnancy, breastfeeding, or planning to breastfeed.
- Are allergic to latex, because the needle cover on the prefilled syringe contains latex.
- Recently received or plan to receive a vaccine.
People using Stelara should avoid live vaccines unless their healthcare provider gives specific guidance. Ask your clinician before getting vaccines, including seasonal vaccines, travel vaccines, or vaccines recommended for household members.
Common Side Effects
Common side effects of Stelara may include upper respiratory infections, nasal congestion, sore throat, runny nose, headache, tiredness, itching, nausea, vomiting, redness at the injection site, urinary tract infections, sinus infections, bronchitis, diarrhea, stomach pain, and joint pain. Not everyone has side effects, and many side effects are mild, but anything severe, persistent, or unusual should be reported.
Call a Healthcare Provider Right Away If You Notice:
- Signs of infection
- Shortness of breath or a cough that does not go away
- Severe rash, hives, facial swelling, or trouble breathing
- Seizures, confusion, severe headache, or vision changes
- New or changing skin growths
Real-World Experience: What Stelara Dosing Can Feel Like at Home
For many patients, the idea of using Stelara at home is more intimidating than the actual injection routine. The first dose or two may feel like a major production: clear the counter, wash hands, reread the instructions, check the carton three times, stare at the syringe, take a deep breath, and maybe negotiate emotionally with the needle. That is normal. Most people do not wake up naturally excited to give themselves an injection before breakfast.
Over time, the process often becomes more routine. Patients commonly find that setting a calendar reminder is essential because Stelara is not taken daily or weekly. A dose every 8 or 12 weeks can sneak up on anyone. Some people use a phone alert, a paper calendar, and a pharmacy refill reminder because biologic scheduling is not the place to rely on “I’ll remember.” Future-you deserves backup.
Storage is another part of the experience. Since Stelara is refrigerated, many patients keep it in one consistent spot in the refrigerator, away from curious hands and accidental freezing. Leaving it in the original carton helps protect it from light and makes it easier to see the prescription label. Some people place a note on the carton with the planned injection date, especially if the syringe was removed for room-temperature storage. Organization may not sound glamorous, but it prevents panic-searching the fridge behind the yogurt.
Injection-site rotation also becomes a learned habit. If one thigh was used last time, the next dose may go into the other thigh or another approved area. Rotating sites helps reduce soreness and irritation. Many patients also learn not to rush the clean-and-dry step after using an alcohol wipe. Injecting through wet alcohol can sting, which is a tiny detail that suddenly feels very important once you experience it.
Another practical lesson is to plan around life. If a dose is due during a vacation, work trip, college move-in weekend, or holiday chaos, it is worth calling the pharmacy or healthcare team early. Travel with refrigerated medication may require planning, and some patients may need documentation, insulated packing, or timing guidance. Stelara’s dosing schedule is convenient compared with more frequent medications, but it still needs respect.
Emotionally, home dosing can feel empowering. Patients often appreciate not needing a clinic visit for every maintenance injection, especially once they are confident with the steps. Still, confidence should not turn into improvisation. If the syringe looks damaged, the liquid looks wrong, the dose was missed, or an infection appears, the right move is to call the healthcare provider. Home injection works best when independence and medical guidance stay on the same team.
Conclusion
Stelara dosage depends on why it is being prescribed, the patient’s age, body weight, and whether treatment starts with an IV infusion or a subcutaneous injection. Adults with plaque psoriasis or psoriatic arthritis often receive injections at week 0, week 4, and every 12 weeks. Adults with Crohn’s disease or ulcerative colitis usually begin with a weight-based IV infusion, followed by 90 mg injections every 8 weeks. Pediatric dosing can be more detailed, especially for Crohn’s disease and lower body weights.
The big takeaway is simple: follow the exact plan from your healthcare provider. Stelara can be used at home by some patients after proper training, but it must be stored correctly, injected safely, and monitored carefully. When in doubt, ask the care team. They would rather answer a “small” question early than fix a big problem later.