The ideal time to take vitamins is during the morning as this is when your body does not have nutrients and requires additional energy in order to rise and then function. You should usually take supplements and vitamins within 30 minutes of consuming a healthy breakfast, especially one that has high quantities of calcium, protein and fruit. It helps ensure that your body will process it because it will be both broken down then digested with the food. When you take your vitamin during the morning, you can also ensure that its nutrients will be effectively used during the day.