I was taking propecia for 3 months along with PRP, and noticed decrease in libido. I stopped taking propecia 2 weeks ago (Photo)

It is well known that 4-5% of men taking propecia will develop sexual side effects including low libido. This effect should resolve itself in a few months after discontinuation. I do not prescribe this drug to young men for this reason. IMO it is not an acceptable side effect. 

As mentioned above, finasteride can cause decreased libido in a small minority of men... fortunately for most men, this decreased libido is temporary and will resolve after stopping finasteride. In a subset of men who experience decreased libido while on finasteride, this effect can be long term (this is called post-finasteride syndrome). This is pretty rare and is more common in men who have been taking finasteride for a long time. I would recommend another option to treat your hair and recommend consulting with your local dermatologist about your options. Hope this helps!
Dr. Jensen

Unfortunately propecia, otherwise called finasteride can cause low libido. There is a syndrome that develops in some men called the post finasteride syndrome which includes low libido that persists. I would not take propecia if you are concerned with libido.