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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, treatments can …

  2. 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, mushrooms and …

  3. Hydroxyzine (oral route) - Side effects & dosage - Mayo Clinic

    Feb 1, 2026 · For management of allergic reactions: Adults—25 milligrams (mg) 3 or 4 times a day. Children 6 years of age and older—50 to 100 mg per day given in divided doses. Children younger …

  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 stings. …

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

    Feb 1, 2026 · This medicine may cause serious allergic reactions, including anaphylaxis and angioedema, which can be life-threatening and require immediate medical attention. Call your doctor …

  6. Epinephrine (injection route) - Side effects & dosage - Mayo Clinic

    Feb 1, 2026 · Epinephrine injection is used for emergency treatment of severe allergic reactions (including anaphylaxis) to insect bites or stings, medicines, foods, or other substances.

  7. Contact dermatitis - Symptoms and causes - Mayo Clinic

    May 2, 2024 · Contact dermatitis is an itchy rash caused by direct contact with a substance or an allergic reaction to it. The rash isn't contagious, but it can be very uncomfortable. Many substances can …

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

    Feb 1, 2026 · Serious skin reactions, including toxic epidermal necrolysis, Steven-Johnson syndrome, drug reaction with eosinophilia and systemic symptoms (DRESS), acute generalized exanthematous …

  9. Penicillin allergy - Symptoms & causes - Mayo Clinic

    Sep 20, 2025 · Penicillin allergy is a reaction of the immune system to the antibiotic medicine penicillin. Penicillin is used to treat bacterial infections. Penicillin allergy may cause hives, rash and itching. A …

  10. Milk thistle - Mayo Clinic

    May 21, 2025 · Milk thistle is a plant named for the white veins on its large prickly leaves. One of the active ingredients in milk thistle called silymarin is extracted from the plant's seeds. Silymarin is …