Hello there.  I can understand your concern.  You can take it for upto a month. I dont think it will be required for more than that duration. Also, i would suggest you consult a dermatologist in person for further evaluation and management of the hairfall instead of taking some random people's opinion. Best regards. Dr. Anil kumar jain. Bangalore.

Hi... vitamin B-12 deficiency or problems with your pituitary or thyroid gland can cause hair loss that’s reversible if the problem is corrected.....To prevent hair damage that may cause hair loss, follow these tips: Go natural: Leave your hair its natural color and texture..... Choose products wisely: Use a basic shampoo designed for your hair type. Consult Dermatologist.....