Hair loss is very common these days because of increased stress,nutritional deficiencies, lack of exercise and increase intake of junk food. Other causes of hair fall could be genetic, hormonal imbalances, under-active thyroid gland, and insufficient blood circulation in the scalp. There are many treatment options for hair loss including medications, home remedies and procedures such as PRP, Stem cell therapy.  There are various over the counter medications available for preventing hair loss, but you need the ones most suitable to your hair to get effective results.