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Cimzia

certolizumab
Used for Ankylosing Spondylitis, Crohn's Disease, Non-radiographic Axial Spondyloarthritis, Plaque Psoriasis, Psoriatic Arthritis, Rheumatoid Arthritis

Cimzia (certolizumab) is a prescription biologic used to treat several autoimmune conditions, like rheumatoid arthritis, psoriatic arthritis, and Crohn's disease. It works by blocking a protein called tumor necrosis factor (TNF), which helps reduce inflammation in your body. The medication is given as an injection under the skin every 2 to 4 weeks, depending on your condition. Common side effects include upper respiratory infections, urinary tract infections (UTIs), and skin rash.

Reviewed by:Last reviewed on July 10, 2025
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What is Cimzia (certolizumab)?

What is Cimzia (certolizumab) used for?

How Cimzia (certolizumab) works

Cimzia (certolizumab) is a type of biologic disease-modifying antirheumatic drug (DMARD). More specifically, it's a tumor necrosis factor (TNF) blocker. TNF is a protein in the body that plays a key role in inflammation. By blocking TNF, Cimzia (certolizumab) helps lower inflammation and relieve symptoms like pain, swelling, and tissue damage.

When does Cimzia (certolizumab) start working?Time passed since treatment started:
HOURS
DAYS
WEEKS
Initial effect
MONTHS
Full effect

Drug facts

Common Brands
Drug ClassTNF blocker
Controlled Substance ClassificationNot a controlled medication
Generic StatusNo lower-cost generic available
AvailabilityPrescription only
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Side effects of Cimzia (certolizumab)

The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.

Common Side Effects

Less Common Side Effects

Cimzia (certolizumab) serious side effects

Contact your healthcare provider immediately if you experience any of the following.

  • Serious infections: fever, shortness of breath, cough, weakness, sweating, chills, muscle aches, weight loss, tiredness, diarrhea, stomach pain, burning when you urinate, urinating more frequently, sores on your body
  • Heart failure: shortness of breath; swelling in the legs, ankles, or feet; sudden weight gain
  • Severe allergic reactions: hives, itching, swelling of face or tongue, difficulty breathing
  • Nervous system problems: dizziness, vision problems, numbness or tingling, weakness in your arms or legs
  • Blood problems: fever that doesn't go away, bruising or bleeding easily, pale skin
  • Possible signs of cancer: loss of appetite; fatigue; lumps on skin; swollen lymph nodes in your neck, armpits, or groin; weight loss; nosebleeds
When do Cimzia (certolizumab) possible side effects begin and end?
Time passed since treatment started:
H
D
W
M
Upper respiratory tract infection
Injection-site reactions

Source: DailyMed

The following Cimzia (certolizumab) side effects have also been reported

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

More common

Bladder pain

bloody or cloudy urine

body aches or pain

chills

cough

difficult, burning, or painful urination

difficulty with breathing

ear congestion

fever

frequent urge to urinate

headache

hoarseness

loss of voice

lower back or side pain

nasal congestion

runny nose

sneezing

sore throat

unusual tiredness or weakness

Less common

Bleeding, blistering, burning, coldness, discoloration of the skin, feeling of pressure, hives, infection, inflammation, itching, lumps, numbness, pain, rash, redness, scarring, soreness, stinging, swelling, tenderness, tingling, ulceration, or warmth at the injection site

bloating or swelling of the face, arms, hands, lower legs, or feet

chest pain

frequent urination

pain in the arms, ankles, knees, or legs

painful, red lumps under the skin, mostly on the legs

rapid weight gain

stomach pain

tingling of the hands or feet

tightness in the chest

unusual weight gain or loss

Rare

Blurred vision

confusion

coughing or spitting up blood

diarrhea

dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position

fainting

feeling of warmth

general feeling of discomfort, illness, or weakness

itching, skin rash

joint pain or swelling

large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or genitals

loss of appetite

muscle aches

nausea

night sweats

redness of the face, neck, arms, and occasionally, upper chest

sudden high fever or low-grade fever for months

sweating

swelling of the lymph glands

weakness

Incidence not known

Blistering, peeling, or loosening of the skin

red skin lesions, often with a purple center

red, irritated eyes

red, scaling, or crusted skin

sores, ulcers, or white spots in the mouth or on the lips

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

Difficulty with moving

muscle pain or stiffness

Less common

Vomiting

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

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Pros and cons of Cimzia (certolizumab)

Pros

  • Treats a variety of autoimmune conditions
  • Only need to inject every 2 to 4 weeks
  • Available as a prefilled syringe for at-home administration

Cons

  • Can raise your risk for infections
  • Some people might have difficulty injecting it properly
  • Might have a higher risk for certain cancers
pharmacist-tips-icon

Pharmacist tips for Cimzia (certolizumab)

pharmacist
  • Cimzia (certolizumab) comes as two 200 mg prefilled syringes in each carton. If your dose is 400 mg, you'll need to give yourself two 200 mg injections.
  • Inject Cimzia (certolizumab) under the skin of your upper thighs or stomach. If using your stomach, stay at least 2 inches away from your belly button.
  • To help prevent bruising or skin irritation from Cimzia (certolizumab), change the injection spot each time. Make sure each injection is at least 1 inch away from where you last injected. Avoid skin that is sore, red, bruised, hard, scarred, or has stretch marks.
  • Cimzia (certolizumab) can raise your risk of serious or life-threatening infections. If you get symptoms like fever, cough, trouble breathing, or chills, let your prescriber know right away. You might have to stop taking the medication so your body can fight the infection.
  • Don't use Cimzia (certolizumab) with other TNF blockers or other DMARDs. Doing so can further raise your risk of infection and might not control your symptoms any better.
  • Call your prescriber right away if you notice signs of low blood cells while using Cimzia (certolizumab), like easy bruising, bleeding, or fever that won’t go away.
  • Cimzia (certolizumab) can cause serious allergic reactions. Get medical help right away if you have symptoms like rash, swelling, or trouble breathing. If you're sensitive to latex, tell your care team since parts of the prefilled syringe contain latex.
  • Store Cimzia (certolizumab) in the refrigerator. The prefilled syringes can also be kept and at room temperature for up to 7 days, and unopened vials can stay at room temperature for up to 6 months. Once the medication has been stored at room temperature, don’t put it back in the fridge. Be sure to label the box with the date you took it out so you know when to throw it away if unused.

How to use Cimzia (certolizumab):

  • Your care team will teach you on how to inject the medication. You can also read the instructions for use or watch the training video. Contact your prescriber or pharmacist if you have any questions.
  • Before injecting, take the prefilled syringe out of the refrigerator and let it sit flat at room temperature for about 30 minutes. Don’t heat it any other way.
  • Clean the injection site with an alcohol swab and let the area dry completely.
  • When you're ready to inject, take off the needle cover from the syringe. Then hold the syringe with one hand and pinch the cleaned skin with the other.
  • Insert the needle into the pinched skin at about a 45-degree angle and push the plunger down with your thumb until all the medication is injected. Then take out the needle and let go of your skin.
  • After injecting, throw the needle and syringe in a sharps container or use a strong plastic container like an empty laundry detergent bottle. This helps lower the risk of needle-stick injuries. Don't throw away needles or syringes in your trash.
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Common questions about Cimzia (certolizumab)

In clinical studies, some people started to feel better within 1 week of starting Cimzia (certolizumab). These studies included people with rheumatoid arthritis, ankylosing spondylitis and psoriatic arthritis. Everyone responds to treatment differently, so it might take more time for some people to notice results. So it's important to continue taking the medication, even if you don't feel an improvement right away.

The most common side effect of Cimzia (certolizumab) in clinical studies was upper respiratory tract infections, like a cold or the flu. And because Cimzia (certolizumab) lowers your immune system, other types of infections are possible too, like urinary tract infections (UTIs). Contact your prescriber if you experience symptoms of an infection, such as fever, chills, or feeling unwell. Another common side effect is skin rash. Let your prescriber know if you get a new rash and or if it gets worse, becomes painful, or spreads.

How long side effects from Cimzia (certolizumab) last can depend on the specific side effect. For example, infections can last a few days to a few weeks depending on where they occur in your body. But injection site reactions often go away within a few hours to a few days. Be sure to tell your prescriber if you have any side effects that are bothering you or not going away.

People who took Cimzia (certolizumab) didn't report weight gain as a side effect during clinical studies. But, some people did experience swelling or fluid retention, which can sometimes lead to a small increase in weight. Also, TNF blockers like Cimzia (certolizumab) can cause new or worsening heart failure. This can lead to fluid buildup in the body and result in weight gain. If you notice sudden weight gain along with symptoms like shortness of breath, swelling, feeling tired, contact your prescriber.

It takes about 56-70 days for most of Cimzia (certolizumab) to leave your body after a single dose. This estimate is based on its half-life, which is the time it takes the amount of medication in your body to go down by half. Even though it stays in your system for a while, you still need to take Cimzia (certolizumab) every 2 or 4 weeks, depending on your condition. This helps keep enough medication in your body to control your symptoms. If you have concerns about how long it stays in your system, talk with your prescriber.

Yes, Cimzia (certolizumab) is considered an immunosuppressant because it works by weakening your immune system. It helps treat autoimmune conditions caused by an overactive immune response. By making the immune system less active, it lowers inflammation and helps relieve symptoms. But this also means you might have a higher risk of getting infections.

It’s not clear if Cimzia (certolizumab) is completely safe to use during pregnancy. Small studies found little to no medication in babies' blood when taken in the third trimester. And another study didn't show a higher risk of harm to unborn babies. If you're pregnant or planning to be, talk to your prescriber about the risks and benefits of using Cimzia (certolizumab). If you do take this medication during pregnancy, it's recommended that you contact MotherToBaby to join a registry that tracks the health of you and your baby.

No, but they work in similar ways. Both Cimzia (certolizumab) and Humira (adalimumab) are TNF blockers that treat the same kinds of autoimmune conditions. But Humira (adalimumab) is also FDA approved for other conditions like ulcerative colitis, uveitis and hidradenitis suppurativa. Not to mention, these are different medications with different ingredients and dosing schedules. Talk to your prescriber if you have questions about how these two medications compare.

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Risks and warnings for Cimzia (certolizumab)

Cimzia (certolizumab) can cause some serious health issues. This risk may be even higher for certain groups. If this worries you, talk to your doctor or pharmacist about other options.

Serious infections

  • Risk factors: Active, chronic, or recurrent infection | Age 65 years and older | Having other conditions that raise your risk of infection | Taking other medications that weaken your immune system

Black Box Warning Cimzia (certolizumab) can make it harder for your body to fight off infections. This means you have a higher risk of getting serious or even life-threatening infections caused by bacteria, viruses, or fungi. Your risk is even higher if you're 65 or older, already have an infection, have certain health conditions, or take other medications that weaken your immune system.

blank icon Cimzia (certolizumab) can also cause tuberculosis (TB) infections or hepatitis B virus (HBV) to come back if you've had them in the past or are a carrier. That’s why you’ll need to get tested for both TB and HBV before starting this medication. If you test positive, you’ll need treatment before it’s safe to begin Cimzia (certolizumab).

blank icon Call your care team or go to the hospital right away if you get signs of an infection like fever, cough, trouble breathing, diarrhea, chills, sweating, or weakness. You might need to stop Cimzia (certolizumab) for a while so your body can fight the infection.

Cancer

  • Risk factors: Age 18 years old and younger | Taking medications that weaken your immune system | History of cancer | Rheumatoid arthritis

Black Box Warning Cimzia (certolizumab) might raise your risk of getting certain types of cancers, like leukemia, lymphoma, or skin cancer. The risk is higher in people ages 18 and younger, those with rheumatoid arthritis, or if you're taking other medications that weaken your immune system. You'll probably need certain blood tests and occasional physical exams to check for signs of cancer while you're taking this medication. Contact your care team if you notice any warning signs like swollen lymph nodes (in your neck, armpits, or groin), tiredness, weight loss, reduced appetite, frequent nosebleeds, or lumps on your skin.

Heart failure

Some people have had new or worsening heart failure while taking TNF blockers like Cimzia (certolizumab). Contact your prescriber if you notice signs like shortness of breath, swelling in your legs or feet, an irregular heartbeat, feeling very tired, or weakness while taking this medication. These could be signs of a serious heart problem that needs medical attention.

Allergic reactions

  • Risk factors: Latex allergy

Though rare, some people taking Cimzia (certolizumab) have had allergic reactions to the medication. These can include rash, hives, trouble breathing, swelling of the face or lips, and serious reactions like anaphylaxis. Get medical help right away if you have any of these symptoms while taking this medication.

Also, the needle shield inside the cap of the Cimzia (certolizumab) prefilled syringe contains a material similar to natural rubber latex. If you’re sensitive to latex, this might cause a reaction. Be sure to tell your prescriber if you have a latex allergy and what kind of reaction you’ve had in the past.

Nervous system problems

In rare cases, TNF blockers like Cimzia (certolizumab) have been linked to new or worsening nervous system problems, including conditions like multiple sclerosis or Guillain-Barré syndrome. Let your care team know if you experience dizziness, numbness or tingling, weakness in your arms or legs, or vision changes while taking this medication.

Blood problems

Although rare, people taking TNF blockers like Cimzia (certolizumab) have had low blood cell counts. This can raise your risk of serious infections, bleeding, and anemia. Call your care team right away if you notice signs like fever that won’t go away, easy bruising, unusual bleeding, or pale skin. If your blood counts drop too low, you'll probably need to stop taking the medication.

Lupus-like condition

Cimzia (certolizumab) can sometimes lead to a rare condition called drug-induced lupus erythematosus (DILE). Symptoms can include shortness of breath, joint pain, or a rash on your cheeks or arms that gets worse in sunlight. If you have any of these symptoms, your prescriber might stop the medication to keep you safe. Let your care team know right away if you notice any unusual symptoms.

Live vaccines

It’s not clear if Cimzia (certolizumab) makes the vaccines work less well. To be safe, you should avoid live vaccines while taking this medication and right before starting it. It’s a good idea to get caught up on your vaccines before beginning treatment. Talk to your prescriber about which ones you might need.

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Cimzia (certolizumab) dosage

The average cost for 1 kit of starter of 200mg/ml of Cimzia (certolizumab) is $5,539.53 with a free GoodRx coupon. This is 37.99% off the average retail price of $8,933.95.
cartonCarton
DosageQuantityPrice as low asPrice per unit
2 prefilled syringes of 200mg/ml1 carton$11,073.06$11,073.06
1 prefilled syringe of 200mg/ml1 carton$2,963.72$2,963.72
kitKit
DosageQuantityPrice as low asPrice per unit
starter of 200mg/ml1 kit$5,539.53$5,539.53

Typical dosage for Cimzia (certolizumab)

  • Crohn's disease: The typical starting dose is 400 mg injected under the skin at the beginning, then again at week 2 and week 4. If the medication works well for you, you'll switch to a maintenance dose of 400 mg every 4 weeks to keep your symptoms under control.
  • Rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, and non-radiographic axial spondyloarthritis: The typical starting dose is 400 mg injected under the skin at the beginning, and again at week 2 and week 4. After that, you'll switch to a maintenance dose of 200 mg every 2 weeks or 400 mg every 4 weeks.
  • Polyarticular juvenile idiopathic arthritis: The dose is based on weight.
    • 10 kg to less than 20 kg: The typical starting dose is 100 mg injected under the skin at the beginning, and again at week 2 and week 4. After that, you'll switch to a maintenance dose of 50 mg every 2 weeks.
    • 20 kg to less than 40 kg: The typical starting dose is 200 mg injected under the skin at the beginning, and again at week 2 and week 4. After that, you'll switch to a maintenance dose of 100 mg every 2 weeks.
    • 40 kg and more: The typical starting dose is 400 mg injected under the skin at the beginning, and again at week 2 and week 4. After that, you'll switch to a maintenance dose of 200 mg every 2 weeks.
  • Plaque psoriasis: The typical dose is 400 mg injected under the skin every 2 weeks.
    • If you weigh 90 kg or less, your prescriber might recommend a different dosing schedule of 400 mg injected under the skin at the beginning, and again at week 2 and week 4. After that, you'll switch to a maintenance dose of 200 mg every 2 weeks.
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Interactions between Cimzia (certolizumab) and other drugs

Cimzia (certolizumab) may interact with certain medications or supplements. Always let your doctor and pharmacist know about any other medications or supplements (including prescribed and over-the-counter medications, vitamins, and dietary or herbal supplements) that you are currently taking. The list below does not include all possible drug interactions with Cimzia (certolizumab). Please note that only the generic name of each medication is listed below.

Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.

Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

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What are alternatives to Cimzia (certolizumab)?

There are a number of medications that your doctor can prescribe in place of Cimzia (certolizumab). Compare a few possible alternatives below.
Cimzia (certolizumab)
Used for:
$2,963.72Lowest GoodRx priceView prices
Humira (adalimumab)
Used for:
$277.00Lowest GoodRx priceView prices
Enbrel (etanercept)
Used for:
  • Rheumatoid arthritis (RA)
  • Plaque psoriasis (PsO) and psoriatic arthritis (PsA)
  • Ankylosing spondylitis (AS)
  • Childhood arthritis (polyarticular juvenile idiopathic arthritis, JIA)
$879.07Lowest GoodRx priceView prices
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