A "Vitamin Complex" refers to a combination of essential vitamins that work together to support various bodily functions. These vitamins are crucial for maintaining health, boosting the immune system, and promoting energy levels. Common vitamins found in a complex include Vitamin A, Vitamin C, Vitamin D, Vitamin E, and several B vitamins. Vitamin complexes can be obtained through a balanced diet rich in fruits, vegetables, whole grains, and proteins. They are also available in supplement form for those who may not get enough vitamins from food alone. However, it's important to consult a healthcare professional before starting any new supplement regimen.