I am not going to insult anyone here by pretending to have the faintest idea on new supplements, I find it easier to simply eat within reasonable balance, not macro managed, very vague high level.
The sexual health bit was a theme so this is to help out there. I learned a bit about this when my son started asking why his penis was becoming hard, and he doesn't accept wooly answers so I had to learn about the science behind the male erection and explain it to a 7 year old. this by comparison is a breeze.
There are hormonal shifts etc. but when you break it down to physical capability to obtain and maintain an erection it comes down to blood pressure and the bodies ability to control it.
The penis is a sack of fat, tendons and blood vessels. Blood gets pumped in under pressure providing bulk and stretching the tendons to make it firm.
If you have high blood pressure the body will be less able to handle the additional increase in pressure required to obtain an erection and if it does manage that the additional blood pressure from activity will send it to far and the body will reduce this for safety, so maintaining it is less likely.
There is no pill that will automatically resolve this because reducing blood pressure overall will make the situation more difficult and taking something that will elevate it short term become dangerous for reasons too numerous to list here.
The resolution is simple to say and the last thing most want to hear. Get your blood pressure under control. Eat sensibly, it really isn't as difficult as most think, there is no need to eat 1/4 guava from the hills of Kilimanjaro twice a day etc. it's just balance, adding stuff like Mike's broccoli or similar if you don't already, looking at a food pyramid and seeing your diet is roughly in there not the wrong way up.
Do some activity, it doesn't have to be marathon and strongman level combined but find stuff you enjoy that gets your heart working hard a few times a week at least. The sort of stuff doctors will tell you to do to avoid dying keeps your nocturnal relationships healthier too.
There is a reason wives of old fitness freaks are often smiling. It isn't due to dietary supplements. One wife of a 60 year old biathlete I used to know was less than subtle about why they were so happily married and always said the key to a happy sex life was marry a stamina athlete. Her husband was a very quiet character who never reacted to such remarks, he'd been hearing it for decades.
