Onion

Medically reviewed by Drugs.com. Last updated on Jan 15, 2025.

What are other common names?

• Allium Cepa
• Bulbus Allii Cepae
• Cebolla
• Cipolla
• Common Onion
• Contractubex
• Garden Onion
• Green Onion
• Mederma
• Oignon
• Oignon Vert
• Onions
• Palandu
• Piyaj
• Shallot
• Zwiebel
• Échalote

What is this product used for?

Raw onion or onion peel extract supplements may help improve some risk factors for heart and blood vessel diseases. No information from medical studies supports the use of onion for any other health problem.

What are the precautions when taking this product?

• Always check with your doctor before you use a natural product. Some products may not mix well with drugs or other natural products.

• Be sure to tell your doctor if you are pregnant, plan on getting pregnant, or are breastfeeding. You will need to talk about the benefits and risks of using this natural product.

• Take extra care and check with your doctor if you have stomach pains.

What should I watch for?

• Upset stomach

• Loose stools

• Gas

Related/similar drugs

When do I need to call the doctor?

• Signs of a very bad reaction. These include wheezing; chest tightness; fever; itching; bad cough; blue skin color; seizures; or swelling of face, lips, tongue, or throat. Go to the ER right away.

Last Reviewed Date

2024-10-23

Consumer Information Use and Disclaimer

This generalized information is a limited summary of diagnosis, treatment, and/or medication information. It is not meant to be comprehensive and should be used as a tool to help the user understand and/or assess potential diagnostic and treatment options. It does NOT include all information about conditions, treatments, medications, side effects, or risks that may apply to a specific patient. It is not intended to be medical advice or a substitute for the medical advice, diagnosis, or treatment of a health care provider based on the health care provider's examination and assessment of a patient’s specific and unique circumstances. Patients must speak with a health care provider for complete information about their health, medical questions, and treatment options, including any risks or benefits regarding use of medications. This information does not endorse any treatments or medications as safe, effective, or approved for treating a specific patient. UpToDate, Inc. and its affiliates disclaim any warranty or liability relating to this information or the use thereof. The use of this information is governed by the Terms of Use, available at https://www.wolterskluwer.com/en/know/clinical-effectiveness-terms

Copyright

Copyright © 2025 UpToDate, Inc. and its affiliates and/or licensors. All rights reserved.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Medical Disclaimer