Vitamins C, A, and B are supplements that can be taken with iron to improve energy and reduce tiredness and fatigue.

We don't yet know if vitamin D supplements can boost your immune system, as research on the topic has shown mixed results. If you want to try vitamin D supplements for better immune health, your ...

Medically reviewed by Lindsay Cook, PharmD Vitamin C and D are common ingredients in multivitamins and supplements marketed ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Rory Evans Rory Evans is a writer focused on skin-care and beauty products.

Vitamin D comes in a small tablet, but real food can also do heavy lifting. Some everyday foods deliver meaningful vitamin D, along with protein, healthy fats, and minerals that help the body use it ...

Amelia MacIntyre, DO, is a board-certified family medicine physician. She is certified in osteopathic medicine. Vitamin C is a water-soluble vitamin known for its role in supporting the immune system.

Low levels of vitamin D seem to raise your risk of heart attack but scientists are still figuring out why—and whether supplements might help protect you. Vitamin D is thought to play a protective role ...

Christina is a freelance writer, registered dietitian, and sustainable food systems professional. She feels most passionately about improving the health of the planet and its people through sharing ...