Vitamin and mineral supplements are so popular that you can buy them just about anywhere. Before you run out and stock up on supplements, remember this---food is still the best source for getting the nutrients you need to stay healthy. A balanced multivitamin is second best. Individual vitamin supplements should be taken with caution. I think excessive taking of supplements is a waste of money and it can be harmful to your body. Make sure the supplements you do take have an expiration date on the container. Vitamins lose their potency over time.
The bottom line is a poor diet plus supplements is still a poor diet. Food is your best source of vitamins and minerals.