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  1. Allergies - Symptoms and causes - Mayo Clinic

    Aug 24, 2024 · Allergic reactions vary from person to person. They can range from minor irritation to a life-threatening emergency called anaphylaxis. While most allergies can't be cured, …

  2. Meningococcal vaccine (intramuscular route) - Mayo Clinic

    Apr 1, 2025 · This vaccine may cause serious allergic reactions, including anaphylaxis, which can be life-threatening and require immediate medical attention. Tell your doctor right away if you …

  3. Pneumococcal 21-valent conjugate vaccine (intramuscular route)

    Sep 1, 2025 · Description Pneumococcal 21-valent conjugate vaccine is an active immunizing agent used to prevent infection caused by certain types of pneumococcal bacteria …

  4. Anaphylaxis - Symptoms & causes - Mayo Clinic

    Apr 16, 2025 · Anaphylaxis is a severe, potentially life-threatening allergic reaction. It can occur within seconds or minutes of exposure to something you're allergic to, such as peanuts or bee …

  5. Lisinopril (oral route) - Side effects & dosage - Mayo Clinic

    Dec 1, 2025 · This medicine may cause serious types of allergic reactions, including anaphylaxis. Anaphylaxis can be life-threatening and requires immediate medical attention.

  6. Monosodium glutamate, also called MSG: Is it harmful? - Mayo Clinic

    Monosodium glutamate, also called MSG, is used to make food taste better. Glutamate is a form of the amino acid glutamic acid. Both are naturally in food such as cheese, tomatoes, …

  7. Drug allergy - Symptoms and causes - Mayo Clinic

    Nov 9, 2024 · Overview A drug allergy is the reaction of the immune system to a medicine. Any medicine — over-the-counter, prescription or herbal — can trigger a drug allergy. However, a …

  8. Dexamethasone (oral route) - Side effects & dosage - Mayo Clinic

    Dec 1, 2025 · It works on the immune system to help relieve swelling, redness, itching, and allergic reactions. Dexamethasone tablets are also used in combination with other medicines …

  9. Food allergy - Symptoms and causes - Mayo Clinic

    Aug 30, 2024 · Food intolerance and other reactions A food intolerance or a reaction to another substance you ate may cause the same symptoms as a food allergy does — such as nausea, …

  10. Vancomycin (intravenous route) - Side effects & uses

    Nov 1, 2025 · Serious skin reactions, including toxic epidermal necrolysis, Steven-Johnson syndrome, drug reaction with eosinophilia and systemic symptoms (DRESS), acute …