Hi
I understand your concern.
I appreciate that you are quite physically healthy but sexual and erectile problem may have many origins.
1st due to age, there is aging changes occur in neuronal mechanism of erectile functions.
2nd there may be psychological weakness or desire that affect erection.
You have to do is go for penile Doppler to know blood flow and chance of erection with medications etc.
Viagra can be taken for erectile function but routine physical health examination is necessary before prescribing it. So consult your doctor and get advise about it.
Now a days a new molecule will release soon name udanafil which has minimal side effect and can be given in old age but still proper consultation is necessary.
2nd new launched product name
tetrafol plus which contain phosphodiaesterase which help in erection ,, results are coming good with daily intake up to 2 months
Behavior factor like life style modification with free communication with the partner can help to achieve psychological mindedness.
Consult physician and
psychiatrist for better evaluation and assistance.
Happy to help you further.
Thank you.