Hi I’m a 24 year old male I have a thick head of hair but I asked my doctor for finasteride to keep my hair. My doctor prescribed me 5mg and I was also dignosed With low testosterone. I just have two questions if you guys don’t mind answering thanks. Should i take 2.5 mg once a week by cutting the pill is that enough or should I take more? Also I do some days feel like I have less erctile function like less sensation in that area. Am I fine or should I be concerned ? Thanks