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 …
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, …
Aspirin allergy: What are the symptoms? - Mayo Clinic
Apr 6, 2024 · Reactions to aspirin are common. If you have an aspirin allergy or sensitivity, you may also have a reaction to nonsteroidal anti-inflammatory drugs (NSAIDs), including ibuprofen (Advil, Motrin …
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 drug allergy is …
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 …
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 …
Cephalexin (oral route) - Side effects & dosage - Mayo Clinic
Dec 1, 2025 · Serious allergic reactions can occur with this medicine. Check with your doctor right away if you have chest pain, blistering, peeling, or loose skin, red skin lesions, large, hive-like swelling on …
Propranolol (oral route) - Side effects & dosage - Mayo Clinic
Nov 1, 2025 · Serious skin reactions can occur with this medicine. Check with your doctor right away if you have blistering, peeling, or loose skin, red skin lesions, severe acne or skin rash, sores or ulcers …
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. …
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 …