The majority of your daily needs can be met through diet alone. Supplements are available if you are deficient. You can take a multivitamin supplement that contains all the vitamins you need. You can also buy individual vitamins in your local drugstore.
Talk to your doctor if there are any concerns about getting enough nutrients. The best sources of vitamins K, E, and C are found in dark green leafy veggies such as spinach and broccoli, kale.
Ask your doctor if you're not sure how many vitamins you should take. The doctor will determine the proper dosage based upon your medical history as well as your current health.