Packed with antioxidants, vitamin E boosts your immune system and may also ease inflammation. If you have rheumatoid arthritis, you might find it helps manage pain when used with standard treatment. You can easily get it from the foods you eat. It’s in olive oil, almonds, peanuts, meat, dairy products, leafy greens, and fortified cereal. If you need extra vitamin E, your doctor might prescribe it in drops or capsule form.