<human>:  What are the benefits and side effects of popular vitamins and supplements?
<bot>: The benefits and side effects of popular vitamins and supplements vary widely depending on the type and dosage of the supplement. Generally, vitamins and supplements can provide a range of health advantages when taken correctly. Some vitamins and supplements are believed to help improve overall health, while others can help reduce the risk of specific diseases. While vitamins and supplements can be highly beneficial, they can also be dangerous in high doses or when combined with certain medications. Common potential side effects of vitamins and supplements include nausea, headaches, dizziness, and digestive problems. It is important to consult a health care provider before taking any vitamins or supplements, as well as to follow dosage instructions carefully.