Pls... Viagra help?!?!

Je

My husband was just given viagra and I want to know if anyone has any tips or advice as we have never used this before or have experience with it.

We have not been able to have sex since October due to sudden onset of ED. Doctor said for my husbands age it is probably just temporary and something just needs to get worked out so to try the Viagra and see if it helps. Husband also has to get some blood work done to check a couple other things.