When should I start taking Finasteride after a FUE hair transplant?

I advice always my patients to take the finasteride before and after the surgery.
You need to start taking it as it will help to get a better result.
What are the benefits of Finasteride hair care?
In 80% of treatments with Finasteride, significant growth in hair number and fiber size are observed by prolonged periods of hair regrowth.
How long will it take to notice progress with the use of Finasteride?
The progress is noticed in 6 to 12 months from the beginning of treatment. Use for 2 years is required to achieve maximum effect and continuous use is recommended in order to maintain this benefit. Interruption of treatment will cause undesirable results.
In what part of the scalp does Finasteride work more effectively?
Finasteride is more effective on the vertex and upper-frontal scalp parts. However, it is possibly effective wherever miniaturized hairs are present.
What dosage is recommended for hair care?
The mean dosage is 1mg/day, but significant progress is observed with the dosage of 2mg/day.

It is best to contact your surgeon for post surgery issues and care since all doctors have slightly different instructions.

You should use finasteride immediately and stay on it to continue and stay on it to continue the slowing or halting of hair loss. 

The use of finasteride is independent of the transplant. The purpose of finasteride is to slow down progression of hair loss of the native hair, and the sooner you can begin taking finasteride, the sooner this interruption of hair loss can be begin.

I would recommend restarting finasteride immediately. This prevents any further hair loss and the potential need for a hair transplant down the line. With regards to PRP, as long as you are informed of the side effect profile of the finasteride I would stick with what works for you and you are happy with. 

Thank you for your question. You should immediately resume your finasteride. As you report, this medication has worked for you. Finasteride works by reducing the production of DHT, the principal cause of androgenetic hair loss. The addition of PRP is a good recommendation as it can provide growth factors to give a more robust response to your hair restoration procedure.I hope this was helpful - Dr. Moore.

Finasteride may be taken before, during, and after a hair transplant as it is independent of the hair transplant. If you are concerned about future hair loss, and understand the pros and cons of the medication, it is a medication you should highly consider taking. I recommend seeing a local physician who is a hair loss specialist to discuss receiving the medication as it is a prescription drug.

You should continue using it immediately to give you the best results as it can help turn around any miniaturizing hair during the process of waiting for your hair to grow in from FUE surgery.  

Finasteride should be used as soon as possible. It works to remove the hair follicle killing DHT and can be used before and after a hair transplant procedure. 

Finasteride should be started before the hair transplant to prevent shock loss from occurring. You need to have it in your body before the surgical trauma occurs.  The reason for this is that genetic hair loss in men is progressive and finasteride slows down this process.