Co amoxiclav side effects

Updated February 21, 2017

Co-Amoxiclav is a prescription medication used to treat sinusitis, bronchitis and infections of your ears, urinary tract, reproductive system, abdomen, soft tissues and teeth. Despite its effectiveness, Co-Amoxiclav poses a risk of side effects in some patients.


According to clinical trials published by the U.S. Food and Drug Administration, approximately 3 per cent of users discontinue Co-Amoxiclav use due to side effects.

Types of Common Side Effects

Common side effects of Co-Amoxiclav include diarrhoea, loose stools, nausea, skin rashes, vomiting and vaginal infections.

Time Frame

Side effects of Co-Amoxiclav usually develop during the first few days of use, diminishing as your body becomes accustomed to the effects of the drug.


Some patients develop serious allergic reactions to Co-Amoxiclav, resulting in hives, shortness of breath, rapid heartbeat, shock and even death. Additionally, there is a risk of developing an inflammation of the colon known as colitis.


The gout medication Probenecid increases your risk of developing side effects from Co-Amoxiclav, according to the U.S. Food and Drug Administration.

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About the Author

Faith Davies has been writing professionally since 1996, contributing to various websites. She holds an LAH insurance license in the state of Pennsylvania and has experience as a bank branch manager and lending officer. Davies graduated cum laude from the University of Pittsburgh with a Bachelor of Arts in art history.