Osteopathic medicine: What kind of doctor is a D.O.? - Mayo Clinic
Dec 12, 2025 · You know what M.D. means, but what does D.O. mean? What's different and what's alike between these two kinds of health care providers?
Kratom: Unsafe and ineffective - Mayo Clinic
Jun 18, 2024 · Kratom: Unsafe and ineffective Users swear by kratom for lifting mood and boosting energy, but there are many safety issues and questions about whether kratom works.
Drug addiction (substance use disorder) - Mayo Clinic
Jun 20, 2025 · Overview Drug addiction, also called substance use disorder, is a disease that affects a person's brain and behavior and leads to an inability to control the use of a legal or …
Vitamin D - Mayo Clinic
Mar 21, 2025 · Vitamin D is a nutrient the body needs, along with calcium, to build bones and keep them healthy. The body can absorb calcium only if it has enough vitamin D. Calcium is a …
Vitamin D toxicity: What if you get too much? - Mayo Clinic
Feb 20, 2025 · Vitamin D toxicity is a rare condition that happens when too much vitamin D is in the body. The condition can have serious effects on health. Another name for it is …
Too much vitamin C: Is it harmful? - Mayo Clinic
Feb 20, 2025 · Vitamin C is an essential nutrient, but you can get too much of it. If you're an adult, limit yourself to no more than 2,000 milligrams (mg) of vitamin C a day. The recommended …
Symptoms - Symptoms - Mayo Clinic
Explore possible causes for your medical symptoms.© 1998-2025 Mayo Foundation for Medical Education and Research (MFMER). All rights reserved.
Duloxetine (oral route) - Side effects & dosage - Mayo Clinic
Nov 1, 2025 · Appropriate studies performed to date have not demonstrated pediatric-specific problems that would limit the usefulness of duloxetine in children to treat anxiety in children 7 …
Oppositional defiant disorder (ODD) - Symptoms and causes
Jan 4, 2023 · Symptoms Sometimes it's difficult to recognize the difference between a strong-willed or emotional child and one with oppositional defiant disorder. It's common for children to …
Influenza (flu) - Symptoms and causes - Mayo Clinic
Dec 19, 2025 · Learn more about the symptoms, causes and prevention of this potentially deadly viral infection that attacks the respiratory system.