Vitamin C is essential for humans, and if a person cannot get enough of it, they might suffer from a host of different issues like fever, frequent infections, bleeding gums, and slow-healing wounds. Drinking water infused with a thousand milligrams of vitamin C taken twice a day and having polyphenols-rich olive oil might help to cover that deficiency. Lastly, consuming a lot of vitamin D3 is vital for leading a healthy life.