Skip to content
My WebMD Sign In, Sign Up

Inflammatory Bowel Disease Health Center

Font Size

Treating Crohn’s: Choosing the Right Biologic

By Mary Anne Dunkin
WebMD Feature

If your doctor has talked about using biologic drugs to treat your Crohn's disease, you want to learn as much as you can about them. This guide to biologics includes some questions to ask your doctor and yourself. Use it to help you choose the treatment that's right for you.

What Are Biologics?

Unlike some Crohn's drugs, which suppress your whole immune system, biologics are antibodies that target particular proteins and cells and then block the process that causes inflammation in your gut. So you can get relief while avoiding some of the big side effects of other drugs.

Cimzia (certolizumab pegol), Humira (adalimumab), and Remicade (infliximab) are called anti-TNF-alpha antibodies because they block a protein called tumor necrosis factor-alpha.

Tysabri (natalizumab) prevents white blood cells from traveling to the inflamed gut area and causing more damage.

Should You Take a Biologic?

It depends largely on:

  • How severe your Crohn's is
  • What other treatments you've tried
  • Your doctor's treatment approach
  • What you prefer

When to Take a Biologic -- Sooner or Later?

Some doctors use "step-up therapy." They suggest a biologic only if you have moderate to severe active disease, and standard Crohn's drugs have not worked well for you.   

Why use standard drugs first? "We know how they work, what to expect, and because of our comfort level with them, we tend to use them first," says Marie Borum, MD, professor of medicine and director of gastroenterology and liver diseases at George Washington University in Washington, DC. If you use a biologic early, she adds, you exhaust your treatment options up front.

Others doctors prefer to prescribe biologics from the start. "The trend is to use biologics early, with the hope of altering the history of disease," says Richard Bloomfeld, MD, associate professor of medicine and director of the inflammatory bowel disease clinic at Wake Forest University School of Medicine in Winston-Salem, NC. You may be able to avoid taking steroids that can have many serious side effects. And you may be able to avoid complications and delay the need for surgery.

Most doctors agree that people should start biologics sooner rather than later if they have severe Crohn's. Your doctor may suggest one if:

  • You were young when you got Crohn's
  • Your small intestine is involved
  • You use steroids often to control symptoms
  • You smoke
  • Ulcers have made "fistulas," which are passages through two organs or parts of your body, like two parts of your intestine


Which Biologic Is Right for You?

Most doctors choose anti-TNF biologics to start, Bloomfeld says. Tysabri is usually reserved for people who have not had a good response to these drugs.

When you choose a biologic, weigh how you'll need to get it -- and how often. For example, you get a Humira or Cimzia shot every two or four weeks. You take Remicade by IV every two months. Each IV session takes 2 to 3 hours at a doctor's office or IV center.

You might prefer the ease of a shot, which you can give yourself. On the other hand, you might prefer to get an IV in a medical setting, from a person trained to give it.

Today on WebMD

ibd overview
treatment for crohns slideshow
Ulcerative Colitis Managing Flares
Living With Crohns Slideshow
Ulcerative Colitis Surgery Slideshow
crohns disease healthcheck
Ulcerative Colitis Health Check
Crohns Symptoms
Ulcerative Colitis Diet
Crohns Prebiotic
Supplements UC