Vitamin B12 is typically well-tolerated, but in very rare cases, there are serious side effects to be aware of. Learn more about them here.

The NHS recommends taking vitamin D supplements during winter months to keep bones and muscles healthy, but experts warn of ...

Vitamin D supplements are widely used for bone health and immunity, but excessive intake can lead to silent side effects.

If you're considering a vitamin B12 supplement because of certain dietary restrictions, medical conditions or your age, this is what you need to know.

Learn which supplement is best for preventing and treating respiratory viruses, how to take them, and side effects to watch for.

Dietary supplements are more popular than ever. Vitamins, minerals, herbs, enzymes and other botanicals are now a mainstay in medicine cabinets. Three in four Americans take at least one dietary ...

Medically reviewed by Jillian Foglesong Stabile MD, FAAFP, DABOM — Written by Kaylea Swearingen, PharmD  Key takeaways ...