Take Megavitamins
Taking massive doses of vitamins and minerals is very unnatural — especially the popular and cheap synthetic and isolated "vitamins" created in chemical plants and widely sold in discount retail stores. The human body was not designed to consume such artificial products, especially in such excessive amounts.
Nature prevents us from consuming 20,000 mg of vitamin C in one day because it is impossible to consume 300 oranges (a natural source of vitamin C) in one day. Even if you could, it would produce one major colon cleanse! It is better to supplement healthy food and beverage choices with living food supplements known as homeostatic nutrients rich in vitamins and minerals. This is a balanced form the body can absorb and utilize.
The Veggie Solution
Worried that you're not getting enough vitamins and minerals? Instead of turning to a synthetic megavitamin, look at your diet. Can you eat more green leafy vegetables or bright orange fruits, which are loaded with nutrients? Pack a fruit with your lunch, or quickly steam some spinach or kale to eat with your dinner. You'll get the vitamins and minerals you need — no more, no less.