vitamins and supplements - Cleveland Clinic

Person holding a gel capsule, examining it

May 14, 2025/Eye Care

Vitamins and Foods for Dry Eye Relief

In moderation, vitamins A, C, D, E, B12 and omega-3 fatty acids can improve and maintain your eye health

Two hands full of supplement tablets, pills and capsules, with healthcare provider in background

May 14, 2025/Primary Care

Why Your Doctor Needs To Know What Supplements You’re Taking

Over-the-counter pills, powders, extracts and tinctures can interact with other medications and cause unexpected side effects

May 13, 2025/Infectious Disease

What To Know About Vitamin D and COVID-19

This vital nutrient supports your health, but its role in COVID-19 prevention and treatment isn’t proven

Bottle of vitamins and oversized capsule of vitamin B, with oversized heart in background

April 8, 2025/Heart Health

How Too Much Niacin Can Raise Your Risk of Heart Attack and Stroke

Though it was once used as a cholesterol-lowering medication, niacin is no longer a recommended treatment

Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Policy

Biotin-rich foods, like liver, sardines, mushrooms and cheese, on wooden serving tray

February 25, 2025/Nutrition

A Look at Biotin-Rich Foods

Some protein-containing foods are known to be good sources of biotin — but there are also likely other foods that just haven’t been studied yet

Hand pouring red capsules out of bottle into other hand

January 31, 2025/Nutrition

Do You Need CoQ10 Supplements?

Most people don’t need additional CoQ10, but it may help if you live with migraines or heart disease — if you check with your doctor first

Grilled salmon chunks and veggies on skewers, with creamy dill yogurt sauce on the side

January 27, 2025/Nutrition

6 Foods High in Vitamin D

The ‘sunshine vitamin’ is found naturally in some fish and is added to other foods

Stone table with niacin-rich foods, like nuts, avocado, tomatoes, and cutting board with raw liver, chicken and fish

October 17, 2024/Nutrition

The Health Benefits of Niacin (Vitamin B3)

This important B vitamin has benefits for your heart, brain and skin

Gold spoonful of white powder and silver spoonful of brown powder

October 15, 2024/Skin Care & Beauty

Biotin Side Effects: What’s the Risk?

Taking supplements with biotin can cause inaccurate lab test results

Table of assorted healthy foods, like fruits, veggies, grains, nuts and olive oil

September 16, 2024/Nutrition

Know the Difference: Vitamins vs. Minerals, and How Both Impact Your Health

Vitamins are made by plants and animals, while minerals come from the soil and water — both of which are essential for our bodies

Tag: vitamins and supplements