Do not be lazy to consult a doctor to find out whether or not to supplement intake.

Excess vitamin C may be disposed of through urine. But other types of vitamins (A, D, E and K) are generally settles in the body and is feared could interfere with organ function especially liver and kidney.

Protein supplements are usually contained in a particular person if consumed can cause allergic reactions.

Excessive consumption of iron is not good for those suffering from blood disorders such as thalassemia.

Vitamain K supplements in people who were taking certain medications sometimes just make things worse.

For teens, avoid supplements that contain high protein and additional hormones. It is feared could trigger even gigantism (the body becomes very large) and sexual disorders.

Follow the usage requirements on the package of supplements and note the expiration date.
Do not believe that supplements can cure disease.

Several recent studies about supplements:

Excessive consumption of antioxidant supplements such as vitamins A, E and beta-carotene increased the risk of death.

The best way to get antioxidants for skin health is through the intake of vitamins and oils from foods, not supplements.

Excessive vitamin D supplements actually harmful to the kidneys and liver.
Supplements such as energy drinks can increase blood pressure.

Herbal supplements and natural substitute for Viagra that is claimed to be safer also contain hazards, such as increasing blood pressure and even lead to stroke.

Too much vitamin C will interrupt the absorption of copper, which, although needed in very small amounts, but important set of chemical composition and performance of the body.
Too many supplements contain phosphorus will inhibit the absorption of calcium.
Excess vitamin A, D, K, and iron that can not be disposed of bodies turned into poison.