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Flagyl (FLAJ-ill) Frequently Asked Questions

Part 1: Prescribing and dosing information.

By Amber J. Tresca, About.com

Updated: March 07, 2008

About.com Health's Disease and Condition content is reviewed by the Medical Review Board

Generic name: Metronidazole
Other brand name: Protostat

What is Flagyl?
Flagyl is an antibacterial drug. It is used to kill any bacteria in the body that are causing infection.

How is Flagyl taken?
Flagyl is taken orally in tablet form. It is important to maintain a constant level of Flagyl in the blood. Therefore, it must be taken at regular intervals without missing any doses. Take Flagyl with 8 ounces of water (one glass).

Flagyl can be taken by itself, or with meals. If dry mouth occurs, chewing gum, sucking on hard candy or ice chips may help.

Why is Flagyl prescribed?
Flagyl is used to fight or prevent a bacterial infection. It is used for a wide variety of infections including those in the adbomen, bones, joints, nervous system, respiratory tract, skin, as well as vaginal and intestinal infections.

What do I do if I miss a dose?
If you miss a dose, take it as soon as you remember. If your next dose should be taken soon, just take that dose. Don't double up, or take more than one dose at a time.

Who should not take Flagyl?
Pregnant women in their first trimester should not take Flagyl for vaginal infections. People with an allergy or sensitivity to metronidazole should also not take Flagyl.

Flagyl should be used under the close supervision of a physician by anyone with liver disease.

Yeast infections may worsen while taking Flagyl.

If I start to feel better, can I stop taking Flagyl?
NO. As you are treated with Flagyl, you may start to feel better, but that does not mean the infection is entirely gone. Take all of the medication that was prescribed to you unless instructed to stop taking it by a health care professional. Stopping the medication before the bacterial infection is completely gone can result in serious consequences. A stronger strain of bacteria may develop, or the infection may come back again and be more difficult to treat.

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Inflammatory Bowel Disease (IBD)

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