Nutritional supplements
Learning Center
L-arginine: Does it lower blood pressure?
This supplement may help some people lower their blood pressure. Learn who might benefit and who should stay away from it.
Diabetic neuropathy: Can dietary supplements help?
Along with a healthy diet, some vitamin and antioxidant products might play a role in preventing or slowing this common diabetes complication.
Gallbladder cleanse: A 'natural' remedy for gallstones?
A gallbladder cleanse is a popular alternative remedy for gallstones. But does it work?
Glucosamine: Does it protect cartilage in osteoarthritis?
Glucosamine manufacturers claim their products slow or stop cartilage damage in osteoarthritis.
Kratom: Unsafe and ineffective
Users revere kratom for mood enhancement and fatigue reduction, but safety issues and questions about effectiveness abound. Learn more before trying it.
Prenatal vitamins: OK for women who aren't pregnant?
Prenatal vitamins: Why they might not be suitable if you're not pregnant.
Eating the placenta: A good idea?
Despite claims of benefits, eating your placenta after giving birth can be harmful to you and your baby.
Dietary supplements for erectile dysfunction: A natural treatment for ED?
Some dietary supplements for erectile dysfunction might work and some might be dangerous. Get the facts.
Vitamin D deficiency
What are the risks of too little vitamin D?
Herbal supplements and heart medicines may not mix
Some herbal supplements can have dangerous interactions with heart medications.
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