Nutritional supplements
Learning Center
Alzheimer's prevention: Does it exist?
Alzheimer's prevention: Strategies for staying physically and mentally fit may be most effective.
Allergy medications and pregnancy: What's safe?
Find out what medicines can help you manage allergies while you're pregnant.
Alkaline water: Better than plain water?
Health claims about alkaline water abound, but plain water is usually best.
Alcohol: Does it affect blood pressure?
Drinking too much alcohol can raise blood pressure to unhealthy levels.
Albuterol side effects: Can I avoid them?
Albuterol side effects — Managing reactions to quick-relief asthma medication.
Air travel with infant: Is it safe?
Planning for air travel with an infant? Know how air travel can affect a newborn's ears and breathing, and what you can do to keep your baby comfortable.
Air travel during pregnancy: Is it safe?
Consider these guidelines if you need to fly while you're pregnant.
Adult bed-wetting: A concern?
Adult bed-wetting is uncommon and requires evaluation by a doctor. Learn about possible causes.
Adrenal fatigue: What causes it?
Adrenal fatigue is a term used to describe a group of symptoms that aren't specific. It's not an official medical diagnosis.
Acute sinusitis: Do over-the-counter treatments help?
Medicine you can get without a prescription may give some relief from acute sinusitis symptoms.
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