The manufactured product that intended to supplement one's diet is called dietary supplement. Some Common dietary supplements are given below:

Calcium.

Fish Oil.

Omega 3 fatty acid.

Magnesium.

Ginseng.

Glucosamine.

Chondroitin Sulphate.

Garlic.

Iron.

Zinc.

Vitamin C 

Vitamin D.

Saw Palmetto.

Ginkgo.

Green tea etc.