Medicines for hair loss can slow thinning of hair and increase coverage of the scalp by growing new hair and enlarging existing hairs. But they need to be taken regularly. If you stop the medicine, hair loss returns. Do not expect to regrow a full head of hair. Hair coverage is improved on the top of the head, but not on the forehead area.
There are various medicines to treat hair fall which comes in the form of oral medicines and applications. Follow doctor instruction strictly before using medicines.