Horseradish is a root vegetable that has a strong, pungent flavor. It is often used as a condiment or seasoning. While horseradish is safe for most people to eat, there are some groups of people who should avoid it.
People with gastrointestinal issues such as heartburn, gastritis, ulcers, or Crohn's disease may find that horseradish aggravates their condition. Horseradish can also be irritating to the skin and mucous membranes. If you have any cuts or open wounds on your skin, it's best to avoid contact with horseradish.
Pregnant women and young children should also avoid eating horseradish. The strong flavor of horseradish can cause nausea and vomiting. Pregnant women should also avoid foods that can trigger heartburn or indigestion.
If you have any allergies, make sure to check with your doctor before eating horseradish. Some people are allergic to horse radish pollen and could have a reaction if they eat the root vegetable.