Antibiotics Home > Flagyl Reactions

Flagyl® (metronidazole) is a medication often prescribed for treating various bacterial infections, including some sexually transmitted infections.
Although most people tolerate this antibiotic well, it is possible to develop side effects while taking Flagyl. Reactions caused by this drug may include:
In most cases, side effects such as these are minor and easily treated. However, you should notify your healthcare provider right away if you are taking Flagyl and you develop serious reactions, such as seizures; breathing problems; or paralysis of an arm, leg, foot, or hand.
It is also important to know that Flagyl can cause other problems (such as drug interactions) and may not be suitable for some people. Therefore, make sure your healthcare provider is aware of any medical condition you have and any other medications you are taking, including nonprescription medicines, herbal supplements, and vitamins.
(Click Flagyl Side Effects and Flagyl Warnings and Precautions for a more complete list of possible reactions, including other potentially serious problems with this drug that require immediate medical attention. These articles also discuss who may not be able to safely use this antibiotic.)
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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