Too much vitamin D can harm your health. Know the warning signs, side effects, and safe ways to manage your vitamin D levels ...

Taking too much vitamin D can cause serious side effects. Learn the signs, why you might feel weird after taking it, and when to talk to your healthcare provider.

Taking high-dose vitamin E supplements long-term can cause serious side effects like bleeding, stroke, and heart failure. Learn safe dosing and warning signs.

Fact checked by Nick Blackmer Vitamin D is vital, but taking in too much from supplements can be harmful.Vitamin D toxicity can cause common symptoms like nausea, weakness, and loss of ...

Amelia Ti is a Registered Dietitian (RD) and Certified Diabetes Care and Education Specialist (CDCES) based in NYC. She completed her Bachelor's in Nutrition & Dietetics at NYU and Master's in Applied ...

What are the benefits of multivitamins, and what side effects do they have? In the world of vitamin supplements, finding products you know are safe can be difficult. Unlike drugs, dietary supplements ...

It’s also generally okay to take a multivitamin alongside other supplements or medications. “A multivitamin can be taken on ...

Iron is often sold in products that also contain vitamin C, which enhances iron absorption. There are considerations, as with all supplements.

Vitamins are nutrients that are found in the foods we eat. They’re needed for functions such as growth, metabolism, and nervous system activities. Share on Pinterest Anna Denisova/Getty Images Often, ...

Topical vitamin C and retinol both provide anti-aging benefits to your skin, and combining them may compound their effects, but may cause irritation.

Although research has found a strong connection between vitamin D deficiency and depression, it’s unclear whether vitamin D supplements can improve the symptoms of seasonal affective disorder.