Nutritional supplements
Learning Center
Sex and COVID-19: Can you get COVID-19 from sexual activity?
Find out whether COVID-19 can be spread during sexual activity and how to reduce your risk of getting the virus from a sexual partner.
Coughing more after quitting smoking: What's the deal?
If you cough more than usual after you give up cigarettes, find out what it might mean and when to call the doctor.
Too much vitamin C: Is it harmful?
Vitamin C is an essential nutrient, but too much carries its own risks.
Pregnancy acne: What's the best treatment?
Learn about self-care and safe medications to treat acne during pregnancy.
Probiotics and prebiotics: What you should know
Probiotics are foods or supplements that contain 'good' bacteria that might help treat or prevent illness. Should they be part of your diet?
Vitamin D toxicity: What if you get too much?
Understand the risks of too much vitamin D, including a toxic reaction.
Cellulitis: How to prevent recurrent episodes
Learn to treat and prevent recurrent cellulitis.
Shingles vaccine: Can I transmit the vaccine virus to others?
A shingles vaccine uses only part of the varicella-zoster virus, so you can't infect others.
High-protein diets: Are they safe?
Considering a high-protein diet for weight loss? Understand the precautions first.
Calcium supplements: When should they be taken?
Timing matters when taking these supplements. Learn how to take them.
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